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ThorbenFroehlking commited on
Commit ·
17ad0e5
1
Parent(s): 5dbe94b
Updated
Browse files- .ipynb_checkpoints/app-checkpoint.py +158 -144
- app-Copy1.py +89 -22
- app.py +158 -144
.ipynb_checkpoints/app-checkpoint.py
CHANGED
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@@ -27,10 +27,7 @@ from datasets import Dataset
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from scipy.special import expit
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-
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# Load model and move to device
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#checkpoint = 'ThorbenF/prot_t5_xl_uniref50'
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#checkpoint = 'ThorbenF/prot_t5_xl_uniref50_cryptic'
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checkpoint = 'ThorbenF/prot_t5_xl_uniref50_database'
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max_length = 1500
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model, tokenizer = load_model(checkpoint, max_length)
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@@ -45,45 +42,32 @@ def normalize_scores(scores):
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def read_mol(pdb_path):
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"""Read PDB file and return its content as a string"""
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print(f"File not found: {pdb_path}")
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raise
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except Exception as e:
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print(f"Error reading file {pdb_path}: {str(e)}")
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raise
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def fetch_structure(pdb_id: str, output_dir: str = ".") -> Optional[str]:
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"""
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Fetch the structure file for a given PDB ID. Prioritizes CIF files.
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If a structure file already exists locally, it uses that.
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"""
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file_path = download_structure(pdb_id, output_dir)
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return file_path
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else:
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return None
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def download_structure(pdb_id: str, output_dir: str) ->
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"""
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Attempt to download the structure file in CIF or PDB format.
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Returns the path to the downloaded file
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"""
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for ext in ['.cif', '.pdb']:
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file_path = os.path.join(output_dir, f"{pdb_id}{ext}")
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if os.path.exists(file_path):
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return file_path
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url = f"https://files.rcsb.org/download/{pdb_id}{ext}"
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return file_path
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except Exception as e:
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print(f"Download error for {pdb_id}{ext}: {e}")
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return None
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def convert_cif_to_pdb(cif_path: str, output_dir: str = ".") -> str:
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@@ -100,8 +84,6 @@ def convert_cif_to_pdb(cif_path: str, output_dir: str = ".") -> str:
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def fetch_pdb(pdb_id):
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pdb_path = fetch_structure(pdb_id)
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if not pdb_path:
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return None
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_, ext = os.path.splitext(pdb_path)
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if ext == '.cif':
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pdb_path = convert_cif_to_pdb(pdb_path)
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@@ -111,11 +93,9 @@ def create_chain_specific_pdb(input_pdb: str, chain_id: str, residue_scores: lis
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"""
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Create a PDB file with only the selected chain and residues, replacing B-factor with prediction scores
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"""
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# Read the original PDB file
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parser = PDBParser(QUIET=True)
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structure = parser.get_structure('protein', input_pdb)
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# Prepare a new structure with only the specified chain and selected residues
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output_pdb = f"{os.path.splitext(input_pdb)[0]}_{chain_id}_predictions_scores.pdb"
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# Create scores dictionary for easy lookup
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@@ -148,8 +128,57 @@ def create_chain_specific_pdb(input_pdb: str, chain_id: str, residue_scores: lis
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return output_pdb
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-
def
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# Determine if input is a PDB ID or file path
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if pdb_id_or_file.endswith('.pdb'):
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pdb_path = pdb_id_or_file
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@@ -158,51 +187,37 @@ def process_pdb(pdb_id_or_file, segment, score_type='normalized'):
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pdb_id = pdb_id_or_file
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pdb_path = fetch_pdb(pdb_id)
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if not pdb_path:
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return "Failed to fetch PDB file", None, None
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-
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# Determine the file format and choose the appropriate parser
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_, ext = os.path.splitext(pdb_path)
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parser = MMCIFParser(QUIET=True) if ext == '.cif' else PDBParser(QUIET=True)
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structure = parser.get_structure('protein', pdb_path)
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except Exception as e:
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return f"Error parsing structure file: {e}", None, None
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# Extract the specified chain
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chain = structure[0][segment]
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except KeyError:
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return "Invalid Chain ID", None, None
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protein_residues = [res for res in chain if is_aa(res)]
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sequence = "".join(seq1(res.resname) for res in protein_residues)
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sequence_id = [res.id[1] for res in protein_residues]
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visualized_sequence = "".join(seq1(res.resname) for res in protein_residues)
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if sequence != visualized_sequence:
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raise ValueError("The visualized sequence does not match the prediction sequence")
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-
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input_ids = tokenizer(" ".join(sequence), return_tensors="pt").input_ids.to(device)
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with torch.no_grad():
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outputs = model(input_ids).logits.detach().cpu().numpy().squeeze()
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# Calculate scores and normalize them
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normalized_scores = normalize_scores(
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# Choose which scores to use based on score_type
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display_scores = normalized_scores if score_type == 'normalized' else
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# Zip residues with scores to track the residue ID and score
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residue_scores = [(resi, score) for resi, score in zip(sequence_id, display_scores)]
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# Also save both score types for later use
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raw_residue_scores = [(resi, score) for resi, score in zip(sequence_id,
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norm_residue_scores = [(resi, score) for resi, score in zip(sequence_id, normalized_scores)]
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-
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# Define the score brackets
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score_brackets = {
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@@ -223,79 +238,35 @@ def process_pdb(pdb_id_or_file, segment, score_type='normalized'):
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residues_by_bracket[bracket].append(resi)
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break
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#
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current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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result_str = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\n\n"
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result_str += "Residues by Score Brackets:\n\n"
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#
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for i, res in enumerate(protein_residues) if res.id[1] in residues
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])
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result_str += "\n\n"
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-
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# Create chain-specific PDB with scores in B-factor
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scored_pdb = create_chain_specific_pdb(pdb_path, segment, residue_scores, protein_residues)
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# Molecule visualization with updated script with color mapping
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mol_vis = molecule(pdb_path, residue_scores, segment)
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# Improved PyMOL command suggestions
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current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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pymol_commands = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\n\n"
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pymol_commands += f"""
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# PyMOL Visualization Commands
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fetch {pdb_id}, protein
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hide everything, all
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show cartoon, chain {segment}
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color white, chain {segment}
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"""
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#
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"0.0-0.2": "white",
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"0.2-0.4": "lightorange",
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"0.4-0.6": "orange",
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"0.6-0.8": "red",
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"0.8-1.0": "firebrick"
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}
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# Add PyMOL commands for each score bracket
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for bracket, residues in residues_by_bracket.items():
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if residues: # Only add commands if there are residues in this bracket
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color = bracket_colors[bracket]
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resi_list = '+'.join(map(str, residues))
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pymol_commands += f"""
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select bracket_{bracket.replace('.', '').replace('-', '_')}, resi {resi_list} and chain {segment}
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show sticks, bracket_{bracket.replace('.', '').replace('-', '_')}
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color {color}, bracket_{bracket.replace('.', '').replace('-', '_')}
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"""
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# Create prediction and scored PDB files
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prediction_file = f"{pdb_id}_binding_site_residues.txt"
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with open(prediction_file, "w") as f:
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f.write(result_str)
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def molecule(input_pdb, residue_scores=None, segment='A'):
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#
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try:
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# Read PDB file content
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mol = read_mol(input_pdb)
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except Exception as e:
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return f"<p>Error reading PDB file: {str(e)}</p>"
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# More granular scoring for visualization
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#mol = read_mol(input_pdb) # Read PDB file content
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# Prepare high-scoring residues script if scores are provided
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high_score_script = ""
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if residue_scores is not None:
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Score dependent colorcoding:
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- 0.0-0.2: white
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- 0.2–0.4: light orange
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- 0.4–0.6: orange
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- 0.6–0.8:
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- 0.8–1.0:
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""")
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predictions_output = gr.Textbox(label="Visualize Prediction with PyMol")
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gr.Markdown("### Download:\n- List of predicted binding site residues\n- PDB with score in beta factor column")
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norm_scores_state = gr.State(None)
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last_pdb_path = gr.State(None)
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last_segment = gr.State(None)
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def process_interface(mode, pdb_id, pdb_file, chain_id, score_type_val):
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selected_score_type = 'normalized' if score_type_val == "Normalized Scores" else 'raw'
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# First get the actual PDB file path
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if mode == "PDB ID":
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pdb_path = fetch_pdb(pdb_id) # Get the actual file path
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if not pdb_path:
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return "Failed to fetch PDB file", None, None, None, None, None, None
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pymol_cmd, mol_vis, files, raw_scores, norm_scores = process_pdb(pdb_path, chain_id, selected_score_type)
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# Store the actual file path, not just the PDB ID
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return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id
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elif mode == "Upload File":
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_, ext = os.path.splitext(pdb_file.name)
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file_path = os.path.join('./', f"{_}{ext}")
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else:
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pdb_path = file_path
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pymol_cmd, mol_vis, files, raw_scores, norm_scores = process_pdb(pdb_path, chain_id, selected_score_type)
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return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id
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if raw_scores is None or norm_scores is None or pdb_path is None or segment is None:
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return None
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# Verify the file exists
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if not os.path.exists(pdb_path):
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return f"Error: File not found at {pdb_path}"
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# Choose scores based on radio button selection
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# Generate visualization with selected scores
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-
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def fetch_interface(mode, pdb_id, pdb_file):
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if mode == "PDB ID":
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else:
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pdb_path= file_path
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return pdb_path
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else:
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return "Error: Invalid mode selected"
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def toggle_mode(selected_mode):
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if selected_mode == "PDB ID":
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process_interface,
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inputs=[mode, pdb_input, pdb_file, segment_input, score_type],
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outputs=[predictions_output, molecule_output, download_output,
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raw_scores_state, norm_scores_state, last_pdb_path, last_segment]
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)
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# Update visualization when score type changes
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score_type.change(
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inputs=[score_type, raw_scores_state, norm_scores_state, last_pdb_path, last_segment],
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outputs=[molecule_output]
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)
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visualize_btn.click(
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inputs=[pdb_input, segment_input],
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outputs=[predictions_output, molecule_output, download_output]
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)
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demo.launch(share=True)
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from scipy.special import expit
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# Load model and move to device
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checkpoint = 'ThorbenF/prot_t5_xl_uniref50_database'
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max_length = 1500
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model, tokenizer = load_model(checkpoint, max_length)
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def read_mol(pdb_path):
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"""Read PDB file and return its content as a string"""
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with open(pdb_path, 'r') as f:
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return f.read()
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+
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def fetch_structure(pdb_id: str, output_dir: str = ".") -> str:
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"""
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Fetch the structure file for a given PDB ID. Prioritizes CIF files.
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If a structure file already exists locally, it uses that.
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"""
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file_path = download_structure(pdb_id, output_dir)
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return file_path
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def download_structure(pdb_id: str, output_dir: str) -> str:
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"""
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Attempt to download the structure file in CIF or PDB format.
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Returns the path to the downloaded file.
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"""
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for ext in ['.cif', '.pdb']:
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file_path = os.path.join(output_dir, f"{pdb_id}{ext}")
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if os.path.exists(file_path):
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return file_path
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url = f"https://files.rcsb.org/download/{pdb_id}{ext}"
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response = requests.get(url, timeout=10)
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if response.status_code == 200:
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with open(file_path, 'wb') as f:
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f.write(response.content)
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return file_path
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|
|
|
| 71 |
return None
|
| 72 |
|
| 73 |
def convert_cif_to_pdb(cif_path: str, output_dir: str = ".") -> str:
|
|
|
|
| 84 |
|
| 85 |
def fetch_pdb(pdb_id):
|
| 86 |
pdb_path = fetch_structure(pdb_id)
|
|
|
|
|
|
|
| 87 |
_, ext = os.path.splitext(pdb_path)
|
| 88 |
if ext == '.cif':
|
| 89 |
pdb_path = convert_cif_to_pdb(pdb_path)
|
|
|
|
| 93 |
"""
|
| 94 |
Create a PDB file with only the selected chain and residues, replacing B-factor with prediction scores
|
| 95 |
"""
|
|
|
|
| 96 |
parser = PDBParser(QUIET=True)
|
| 97 |
structure = parser.get_structure('protein', input_pdb)
|
| 98 |
|
|
|
|
| 99 |
output_pdb = f"{os.path.splitext(input_pdb)[0]}_{chain_id}_predictions_scores.pdb"
|
| 100 |
|
| 101 |
# Create scores dictionary for easy lookup
|
|
|
|
| 128 |
|
| 129 |
return output_pdb
|
| 130 |
|
| 131 |
+
def generate_pymol_commands(pdb_id, segment, residues_by_bracket, current_time, score_type):
|
| 132 |
+
"""Generate PyMOL commands based on score type"""
|
| 133 |
+
pymol_commands = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\nScore Type: {score_type}\n\n"
|
| 134 |
+
|
| 135 |
+
pymol_commands += f"""
|
| 136 |
+
# PyMOL Visualization Commands
|
| 137 |
+
fetch {pdb_id}, protein
|
| 138 |
+
hide everything, all
|
| 139 |
+
show cartoon, chain {segment}
|
| 140 |
+
color white, chain {segment}
|
| 141 |
+
"""
|
| 142 |
|
| 143 |
+
# Define colors for each score bracket
|
| 144 |
+
bracket_colors = {
|
| 145 |
+
"0.0-0.2": "white",
|
| 146 |
+
"0.2-0.4": "lightorange",
|
| 147 |
+
"0.4-0.6": "yelloworange",
|
| 148 |
+
"0.6-0.8": "orange",
|
| 149 |
+
"0.8-1.0": "red"
|
| 150 |
+
}
|
| 151 |
+
|
| 152 |
+
# Add PyMOL commands for each score bracket
|
| 153 |
+
for bracket, residues in residues_by_bracket.items():
|
| 154 |
+
if residues: # Only add commands if there are residues in this bracket
|
| 155 |
+
color = bracket_colors[bracket]
|
| 156 |
+
resi_list = '+'.join(map(str, residues))
|
| 157 |
+
pymol_commands += f"""
|
| 158 |
+
select bracket_{bracket.replace('.', '').replace('-', '_')}, resi {resi_list} and chain {segment}
|
| 159 |
+
show sticks, bracket_{bracket.replace('.', '').replace('-', '_')}
|
| 160 |
+
color {color}, bracket_{bracket.replace('.', '').replace('-', '_')}
|
| 161 |
+
"""
|
| 162 |
+
return pymol_commands
|
| 163 |
+
|
| 164 |
+
def generate_results_text(pdb_id, segment, residues_by_bracket, protein_residues, sequence, scores, current_time, score_type):
|
| 165 |
+
"""Generate results text based on score type"""
|
| 166 |
+
result_str = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\nScore Type: {score_type}\n\n"
|
| 167 |
+
result_str += "Residues by Score Brackets:\n\n"
|
| 168 |
+
|
| 169 |
+
# Add residues for each bracket
|
| 170 |
+
for bracket, residues in residues_by_bracket.items():
|
| 171 |
+
result_str += f"Bracket {bracket}:\n"
|
| 172 |
+
result_str += f"Columns: Residue Name, Residue Number, One-letter Code, {score_type} Score\n"
|
| 173 |
+
result_str += "\n".join([
|
| 174 |
+
f"{res.resname} {res.id[1]} {sequence[i]} {scores[i]:.2f}"
|
| 175 |
+
for i, res in enumerate(protein_residues) if res.id[1] in residues
|
| 176 |
+
])
|
| 177 |
+
result_str += "\n\n"
|
| 178 |
+
|
| 179 |
+
return result_str
|
| 180 |
+
|
| 181 |
+
def process_pdb(pdb_id_or_file, segment, score_type='normalized'):
|
| 182 |
# Determine if input is a PDB ID or file path
|
| 183 |
if pdb_id_or_file.endswith('.pdb'):
|
| 184 |
pdb_path = pdb_id_or_file
|
|
|
|
| 187 |
pdb_id = pdb_id_or_file
|
| 188 |
pdb_path = fetch_pdb(pdb_id)
|
| 189 |
|
|
|
|
|
|
|
|
|
|
| 190 |
# Determine the file format and choose the appropriate parser
|
| 191 |
_, ext = os.path.splitext(pdb_path)
|
| 192 |
parser = MMCIFParser(QUIET=True) if ext == '.cif' else PDBParser(QUIET=True)
|
| 193 |
|
| 194 |
+
# Parse the structure file
|
| 195 |
+
structure = parser.get_structure('protein', pdb_path)
|
|
|
|
|
|
|
|
|
|
| 196 |
|
| 197 |
# Extract the specified chain
|
| 198 |
+
chain = structure[0][segment]
|
|
|
|
|
|
|
|
|
|
| 199 |
|
| 200 |
protein_residues = [res for res in chain if is_aa(res)]
|
| 201 |
sequence = "".join(seq1(res.resname) for res in protein_residues)
|
| 202 |
sequence_id = [res.id[1] for res in protein_residues]
|
| 203 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| 204 |
input_ids = tokenizer(" ".join(sequence), return_tensors="pt").input_ids.to(device)
|
| 205 |
with torch.no_grad():
|
| 206 |
outputs = model(input_ids).logits.detach().cpu().numpy().squeeze()
|
| 207 |
|
| 208 |
# Calculate scores and normalize them
|
| 209 |
+
raw_scores = expit(outputs[:, 1] - outputs[:, 0])
|
| 210 |
+
normalized_scores = normalize_scores(raw_scores)
|
| 211 |
|
| 212 |
# Choose which scores to use based on score_type
|
| 213 |
+
display_scores = normalized_scores if score_type == 'normalized' else raw_scores
|
| 214 |
|
| 215 |
# Zip residues with scores to track the residue ID and score
|
| 216 |
residue_scores = [(resi, score) for resi, score in zip(sequence_id, display_scores)]
|
| 217 |
|
| 218 |
# Also save both score types for later use
|
| 219 |
+
raw_residue_scores = [(resi, score) for resi, score in zip(sequence_id, raw_scores)]
|
| 220 |
norm_residue_scores = [(resi, score) for resi, score in zip(sequence_id, normalized_scores)]
|
|
|
|
| 221 |
|
| 222 |
# Define the score brackets
|
| 223 |
score_brackets = {
|
|
|
|
| 238 |
residues_by_bracket[bracket].append(resi)
|
| 239 |
break
|
| 240 |
|
| 241 |
+
# Generate timestamp
|
| 242 |
current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
|
|
|
|
|
|
|
| 243 |
|
| 244 |
+
# Generate result text and PyMOL commands based on score type
|
| 245 |
+
display_score_type = "Normalized" if score_type == 'normalized' else "Raw"
|
| 246 |
+
result_str = generate_results_text(pdb_id, segment, residues_by_bracket, protein_residues, sequence,
|
| 247 |
+
display_scores, current_time, display_score_type)
|
| 248 |
+
pymol_commands = generate_pymol_commands(pdb_id, segment, residues_by_bracket, current_time, display_score_type)
|
| 249 |
+
|
|
|
|
|
|
|
|
|
|
|
|
|
| 250 |
# Create chain-specific PDB with scores in B-factor
|
| 251 |
scored_pdb = create_chain_specific_pdb(pdb_path, segment, residue_scores, protein_residues)
|
| 252 |
|
| 253 |
# Molecule visualization with updated script with color mapping
|
| 254 |
+
mol_vis = molecule(pdb_path, residue_scores, segment)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 255 |
|
| 256 |
+
# Create prediction file
|
| 257 |
+
prediction_file = f"{pdb_id}_{display_score_type.lower()}_binding_site_residues.txt"
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 258 |
with open(prediction_file, "w") as f:
|
| 259 |
f.write(result_str)
|
| 260 |
|
| 261 |
+
scored_pdb_name = f"{pdb_id}_{segment}_{display_score_type.lower()}_predictions_scores.pdb"
|
| 262 |
+
os.rename(scored_pdb, scored_pdb_name)
|
| 263 |
+
|
| 264 |
+
return pymol_commands, mol_vis, [prediction_file, scored_pdb_name], raw_residue_scores, norm_residue_scores, pdb_id, segment
|
| 265 |
|
| 266 |
def molecule(input_pdb, residue_scores=None, segment='A'):
|
| 267 |
+
# Read PDB file content
|
| 268 |
+
mol = read_mol(input_pdb)
|
| 269 |
+
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 270 |
# Prepare high-scoring residues script if scores are provided
|
| 271 |
high_score_script = ""
|
| 272 |
if residue_scores is not None:
|
|
|
|
| 462 |
Score dependent colorcoding:
|
| 463 |
- 0.0-0.2: white
|
| 464 |
- 0.2–0.4: light orange
|
| 465 |
+
- 0.4–0.6: yellow orange
|
| 466 |
+
- 0.6–0.8: orange
|
| 467 |
+
- 0.8–1.0: red
|
| 468 |
""")
|
| 469 |
predictions_output = gr.Textbox(label="Visualize Prediction with PyMol")
|
| 470 |
gr.Markdown("### Download:\n- List of predicted binding site residues\n- PDB with score in beta factor column")
|
|
|
|
| 475 |
norm_scores_state = gr.State(None)
|
| 476 |
last_pdb_path = gr.State(None)
|
| 477 |
last_segment = gr.State(None)
|
| 478 |
+
last_pdb_id = gr.State(None)
|
| 479 |
|
| 480 |
def process_interface(mode, pdb_id, pdb_file, chain_id, score_type_val):
|
| 481 |
selected_score_type = 'normalized' if score_type_val == "Normalized Scores" else 'raw'
|
|
|
|
| 483 |
# First get the actual PDB file path
|
| 484 |
if mode == "PDB ID":
|
| 485 |
pdb_path = fetch_pdb(pdb_id) # Get the actual file path
|
|
|
|
|
|
|
| 486 |
|
| 487 |
+
pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_id_result, segment = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 488 |
# Store the actual file path, not just the PDB ID
|
| 489 |
+
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id, pdb_id_result
|
| 490 |
elif mode == "Upload File":
|
| 491 |
_, ext = os.path.splitext(pdb_file.name)
|
| 492 |
file_path = os.path.join('./', f"{_}{ext}")
|
|
|
|
| 495 |
else:
|
| 496 |
pdb_path = file_path
|
| 497 |
|
| 498 |
+
pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_id_result, segment = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 499 |
+
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id, pdb_id_result
|
| 500 |
+
|
| 501 |
+
def update_visualization_and_files(score_type_val, raw_scores, norm_scores, pdb_path, segment, pdb_id):
|
| 502 |
+
if raw_scores is None or norm_scores is None or pdb_path is None or segment is None or pdb_id is None:
|
| 503 |
+
return None, None, None
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 504 |
|
| 505 |
# Choose scores based on radio button selection
|
| 506 |
+
selected_score_type = 'normalized' if score_type_val == "Normalized Scores" else 'raw'
|
| 507 |
+
selected_scores = norm_scores if selected_score_type == 'normalized' else raw_scores
|
| 508 |
|
| 509 |
# Generate visualization with selected scores
|
| 510 |
+
mol_vis = molecule(pdb_path, selected_scores, segment)
|
| 511 |
+
|
| 512 |
+
# Generate PyMOL commands and downloadable files
|
| 513 |
+
# Get structure for residue info
|
| 514 |
+
_, ext = os.path.splitext(pdb_path)
|
| 515 |
+
parser = MMCIFParser(QUIET=True) if ext == '.cif' else PDBParser(QUIET=True)
|
| 516 |
+
structure = parser.get_structure('protein', pdb_path)
|
| 517 |
+
chain = structure[0][segment]
|
| 518 |
+
protein_residues = [res for res in chain if is_aa(res)]
|
| 519 |
+
sequence = "".join(seq1(res.resname) for res in protein_residues)
|
| 520 |
+
|
| 521 |
+
# Define score brackets
|
| 522 |
+
score_brackets = {
|
| 523 |
+
"0.0-0.2": (0.0, 0.2),
|
| 524 |
+
"0.2-0.4": (0.2, 0.4),
|
| 525 |
+
"0.4-0.6": (0.4, 0.6),
|
| 526 |
+
"0.6-0.8": (0.6, 0.8),
|
| 527 |
+
"0.8-1.0": (0.8, 1.0)
|
| 528 |
+
}
|
| 529 |
+
|
| 530 |
+
# Initialize a dictionary to store residues by bracket
|
| 531 |
+
residues_by_bracket = {bracket: [] for bracket in score_brackets}
|
| 532 |
+
|
| 533 |
+
# Categorize residues into brackets
|
| 534 |
+
for resi, score in selected_scores:
|
| 535 |
+
for bracket, (lower, upper) in score_brackets.items():
|
| 536 |
+
if lower <= score < upper:
|
| 537 |
+
residues_by_bracket[bracket].append(resi)
|
| 538 |
+
break
|
| 539 |
+
|
| 540 |
+
# Generate timestamp
|
| 541 |
+
current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
|
| 542 |
+
|
| 543 |
+
# Generate result text and PyMOL commands based on score type
|
| 544 |
+
display_score_type = "Normalized" if selected_score_type == 'normalized' else "Raw"
|
| 545 |
+
scores_array = [score for _, score in selected_scores]
|
| 546 |
+
result_str = generate_results_text(pdb_id, segment, residues_by_bracket, protein_residues, sequence,
|
| 547 |
+
scores_array, current_time, display_score_type)
|
| 548 |
+
pymol_commands = generate_pymol_commands(pdb_id, segment, residues_by_bracket, current_time, display_score_type)
|
| 549 |
+
|
| 550 |
+
# Create chain-specific PDB with scores in B-factor
|
| 551 |
+
scored_pdb = create_chain_specific_pdb(pdb_path, segment, selected_scores, protein_residues)
|
| 552 |
+
|
| 553 |
+
# Create prediction file
|
| 554 |
+
prediction_file = f"{pdb_id}_{display_score_type.lower()}_binding_site_residues.txt"
|
| 555 |
+
with open(prediction_file, "w") as f:
|
| 556 |
+
f.write(result_str)
|
| 557 |
+
|
| 558 |
+
scored_pdb_name = f"{pdb_id}_{segment}_{display_score_type.lower()}_predictions_scores.pdb"
|
| 559 |
+
os.rename(scored_pdb, scored_pdb_name)
|
| 560 |
+
|
| 561 |
+
return mol_vis, pymol_commands, [prediction_file, scored_pdb_name]
|
| 562 |
|
| 563 |
def fetch_interface(mode, pdb_id, pdb_file):
|
| 564 |
if mode == "PDB ID":
|
|
|
|
| 571 |
else:
|
| 572 |
pdb_path= file_path
|
| 573 |
return pdb_path
|
|
|
|
|
|
|
| 574 |
|
| 575 |
def toggle_mode(selected_mode):
|
| 576 |
if selected_mode == "PDB ID":
|
|
|
|
| 588 |
process_interface,
|
| 589 |
inputs=[mode, pdb_input, pdb_file, segment_input, score_type],
|
| 590 |
outputs=[predictions_output, molecule_output, download_output,
|
| 591 |
+
raw_scores_state, norm_scores_state, last_pdb_path, last_segment, last_pdb_id]
|
| 592 |
)
|
| 593 |
|
| 594 |
+
# Update visualization, PyMOL commands, and files when score type changes
|
| 595 |
score_type.change(
|
| 596 |
+
update_visualization_and_files,
|
| 597 |
+
inputs=[score_type, raw_scores_state, norm_scores_state, last_pdb_path, last_segment, last_pdb_id],
|
| 598 |
+
outputs=[molecule_output, predictions_output, download_output]
|
| 599 |
)
|
| 600 |
|
| 601 |
visualize_btn.click(
|
|
|
|
| 614 |
inputs=[pdb_input, segment_input],
|
| 615 |
outputs=[predictions_output, molecule_output, download_output]
|
| 616 |
)
|
| 617 |
+
demo.launch(share=True)
|
app-Copy1.py
CHANGED
|
@@ -45,8 +45,15 @@ def normalize_scores(scores):
|
|
| 45 |
|
| 46 |
def read_mol(pdb_path):
|
| 47 |
"""Read PDB file and return its content as a string"""
|
| 48 |
-
|
| 49 |
-
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 50 |
|
| 51 |
def fetch_structure(pdb_id: str, output_dir: str = ".") -> Optional[str]:
|
| 52 |
"""
|
|
@@ -141,7 +148,8 @@ def create_chain_specific_pdb(input_pdb: str, chain_id: str, residue_scores: lis
|
|
| 141 |
|
| 142 |
return output_pdb
|
| 143 |
|
| 144 |
-
def process_pdb(pdb_id_or_file, segment):
|
|
|
|
| 145 |
# Determine if input is a PDB ID or file path
|
| 146 |
if pdb_id_or_file.endswith('.pdb'):
|
| 147 |
pdb_path = pdb_id_or_file
|
|
@@ -180,14 +188,20 @@ def process_pdb(pdb_id_or_file, segment):
|
|
| 180 |
input_ids = tokenizer(" ".join(sequence), return_tensors="pt").input_ids.to(device)
|
| 181 |
with torch.no_grad():
|
| 182 |
outputs = model(input_ids).logits.detach().cpu().numpy().squeeze()
|
| 183 |
-
|
| 184 |
# Calculate scores and normalize them
|
| 185 |
scores = expit(outputs[:, 1] - outputs[:, 0])
|
| 186 |
-
|
| 187 |
normalized_scores = normalize_scores(scores)
|
| 188 |
|
|
|
|
|
|
|
|
|
|
| 189 |
# Zip residues with scores to track the residue ID and score
|
| 190 |
-
residue_scores = [(resi, score) for resi, score in zip(sequence_id,
|
|
|
|
|
|
|
|
|
|
|
|
|
| 191 |
|
| 192 |
|
| 193 |
# Define the score brackets
|
|
@@ -236,7 +250,7 @@ def process_pdb(pdb_id_or_file, segment):
|
|
| 236 |
|
| 237 |
pymol_commands += f"""
|
| 238 |
# PyMOL Visualization Commands
|
| 239 |
-
|
| 240 |
hide everything, all
|
| 241 |
show cartoon, chain {segment}
|
| 242 |
color white, chain {segment}
|
|
@@ -266,11 +280,21 @@ def process_pdb(pdb_id_or_file, segment):
|
|
| 266 |
with open(prediction_file, "w") as f:
|
| 267 |
f.write(result_str)
|
| 268 |
|
| 269 |
-
return pymol_commands, mol_vis, [prediction_file,scored_pdb]
|
|
|
|
| 270 |
|
| 271 |
def molecule(input_pdb, residue_scores=None, segment='A'):
|
|
|
|
|
|
|
|
|
|
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| 272 |
# More granular scoring for visualization
|
| 273 |
-
mol = read_mol(input_pdb) # Read PDB file content
|
| 274 |
|
| 275 |
# Prepare high-scoring residues script if scores are provided
|
| 276 |
high_score_script = ""
|
|
@@ -410,7 +434,6 @@ def molecule(input_pdb, residue_scores=None, segment='A'):
|
|
| 410 |
# Return the HTML content within an iframe safely encoded for special characters
|
| 411 |
return f'<iframe width="100%" height="700" srcdoc="{html_content.replace(chr(34), """).replace(chr(39), "'")}"></iframe>'
|
| 412 |
|
| 413 |
-
# Gradio UI
|
| 414 |
with gr.Blocks(css="""
|
| 415 |
/* Customize Gradio button colors */
|
| 416 |
#visualize-btn, #predict-btn {
|
|
@@ -455,32 +478,71 @@ with gr.Blocks(css="""
|
|
| 455 |
info="Choose in which chain to predict binding sites.")
|
| 456 |
prediction_btn = gr.Button("Predict Binding Site", elem_id="predict-btn")
|
| 457 |
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| 458 |
molecule_output = gr.HTML(label="Protein Structure")
|
| 459 |
explanation_vis = gr.Markdown("""
|
| 460 |
Score dependent colorcoding:
|
| 461 |
- 0.0-0.2: white
|
| 462 |
- 0.2–0.4: light orange
|
| 463 |
- 0.4–0.6: orange
|
| 464 |
-
- 0.6–0.8:
|
| 465 |
-
- 0.8–1.0:
|
| 466 |
""")
|
| 467 |
predictions_output = gr.Textbox(label="Visualize Prediction with PyMol")
|
| 468 |
gr.Markdown("### Download:\n- List of predicted binding site residues\n- PDB with score in beta factor column")
|
| 469 |
download_output = gr.File(label="Download Files", file_count="multiple")
|
| 470 |
|
| 471 |
-
|
|
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|
| 472 |
if mode == "PDB ID":
|
| 473 |
-
|
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|
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|
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|
|
|
| 474 |
elif mode == "Upload File":
|
| 475 |
_, ext = os.path.splitext(pdb_file.name)
|
| 476 |
file_path = os.path.join('./', f"{_}{ext}")
|
| 477 |
if ext == '.cif':
|
| 478 |
pdb_path = convert_cif_to_pdb(file_path)
|
| 479 |
else:
|
| 480 |
-
pdb_path= file_path
|
| 481 |
-
|
|
|
|
|
|
|
| 482 |
else:
|
| 483 |
-
return "Error: Invalid mode selected", None, None
|
|
|
|
|
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|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
|
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|
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|
|
|
|
|
|
| 484 |
|
| 485 |
def fetch_interface(mode, pdb_id, pdb_file):
|
| 486 |
if mode == "PDB ID":
|
|
@@ -488,12 +550,10 @@ with gr.Blocks(css="""
|
|
| 488 |
elif mode == "Upload File":
|
| 489 |
_, ext = os.path.splitext(pdb_file.name)
|
| 490 |
file_path = os.path.join('./', f"{_}{ext}")
|
| 491 |
-
#print(ext)
|
| 492 |
if ext == '.cif':
|
| 493 |
pdb_path = convert_cif_to_pdb(file_path)
|
| 494 |
else:
|
| 495 |
pdb_path= file_path
|
| 496 |
-
#print(pdb_path)
|
| 497 |
return pdb_path
|
| 498 |
else:
|
| 499 |
return "Error: Invalid mode selected"
|
|
@@ -512,8 +572,16 @@ with gr.Blocks(css="""
|
|
| 512 |
|
| 513 |
prediction_btn.click(
|
| 514 |
process_interface,
|
| 515 |
-
inputs=[mode, pdb_input, pdb_file, segment_input],
|
| 516 |
-
outputs=[predictions_output, molecule_output, download_output
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 517 |
)
|
| 518 |
|
| 519 |
visualize_btn.click(
|
|
@@ -532,5 +600,4 @@ with gr.Blocks(css="""
|
|
| 532 |
inputs=[pdb_input, segment_input],
|
| 533 |
outputs=[predictions_output, molecule_output, download_output]
|
| 534 |
)
|
| 535 |
-
|
| 536 |
demo.launch(share=True)
|
|
|
|
| 45 |
|
| 46 |
def read_mol(pdb_path):
|
| 47 |
"""Read PDB file and return its content as a string"""
|
| 48 |
+
try:
|
| 49 |
+
with open(pdb_path, 'r') as f:
|
| 50 |
+
return f.read()
|
| 51 |
+
except FileNotFoundError:
|
| 52 |
+
print(f"File not found: {pdb_path}")
|
| 53 |
+
raise
|
| 54 |
+
except Exception as e:
|
| 55 |
+
print(f"Error reading file {pdb_path}: {str(e)}")
|
| 56 |
+
raise
|
| 57 |
|
| 58 |
def fetch_structure(pdb_id: str, output_dir: str = ".") -> Optional[str]:
|
| 59 |
"""
|
|
|
|
| 148 |
|
| 149 |
return output_pdb
|
| 150 |
|
| 151 |
+
def process_pdb(pdb_id_or_file, segment, score_type='normalized'):
|
| 152 |
+
|
| 153 |
# Determine if input is a PDB ID or file path
|
| 154 |
if pdb_id_or_file.endswith('.pdb'):
|
| 155 |
pdb_path = pdb_id_or_file
|
|
|
|
| 188 |
input_ids = tokenizer(" ".join(sequence), return_tensors="pt").input_ids.to(device)
|
| 189 |
with torch.no_grad():
|
| 190 |
outputs = model(input_ids).logits.detach().cpu().numpy().squeeze()
|
| 191 |
+
|
| 192 |
# Calculate scores and normalize them
|
| 193 |
scores = expit(outputs[:, 1] - outputs[:, 0])
|
|
|
|
| 194 |
normalized_scores = normalize_scores(scores)
|
| 195 |
|
| 196 |
+
# Choose which scores to use based on score_type
|
| 197 |
+
display_scores = normalized_scores if score_type == 'normalized' else scores
|
| 198 |
+
|
| 199 |
# Zip residues with scores to track the residue ID and score
|
| 200 |
+
residue_scores = [(resi, score) for resi, score in zip(sequence_id, display_scores)]
|
| 201 |
+
|
| 202 |
+
# Also save both score types for later use
|
| 203 |
+
raw_residue_scores = [(resi, score) for resi, score in zip(sequence_id, scores)]
|
| 204 |
+
norm_residue_scores = [(resi, score) for resi, score in zip(sequence_id, normalized_scores)]
|
| 205 |
|
| 206 |
|
| 207 |
# Define the score brackets
|
|
|
|
| 250 |
|
| 251 |
pymol_commands += f"""
|
| 252 |
# PyMOL Visualization Commands
|
| 253 |
+
fetch {pdb_id}, protein
|
| 254 |
hide everything, all
|
| 255 |
show cartoon, chain {segment}
|
| 256 |
color white, chain {segment}
|
|
|
|
| 280 |
with open(prediction_file, "w") as f:
|
| 281 |
f.write(result_str)
|
| 282 |
|
| 283 |
+
return pymol_commands, mol_vis, [prediction_file, scored_pdb],raw_residue_scores,norm_residue_scores
|
| 284 |
+
|
| 285 |
|
| 286 |
def molecule(input_pdb, residue_scores=None, segment='A'):
|
| 287 |
+
# Check if the file exists
|
| 288 |
+
if not os.path.isfile(input_pdb):
|
| 289 |
+
return f"<p>Error: PDB file not found at {input_pdb}</p>"
|
| 290 |
+
|
| 291 |
+
try:
|
| 292 |
+
# Read PDB file content
|
| 293 |
+
mol = read_mol(input_pdb)
|
| 294 |
+
except Exception as e:
|
| 295 |
+
return f"<p>Error reading PDB file: {str(e)}</p>"
|
| 296 |
# More granular scoring for visualization
|
| 297 |
+
#mol = read_mol(input_pdb) # Read PDB file content
|
| 298 |
|
| 299 |
# Prepare high-scoring residues script if scores are provided
|
| 300 |
high_score_script = ""
|
|
|
|
| 434 |
# Return the HTML content within an iframe safely encoded for special characters
|
| 435 |
return f'<iframe width="100%" height="700" srcdoc="{html_content.replace(chr(34), """).replace(chr(39), "'")}"></iframe>'
|
| 436 |
|
|
|
|
| 437 |
with gr.Blocks(css="""
|
| 438 |
/* Customize Gradio button colors */
|
| 439 |
#visualize-btn, #predict-btn {
|
|
|
|
| 478 |
info="Choose in which chain to predict binding sites.")
|
| 479 |
prediction_btn = gr.Button("Predict Binding Site", elem_id="predict-btn")
|
| 480 |
|
| 481 |
+
# Add score type selector
|
| 482 |
+
score_type = gr.Radio(
|
| 483 |
+
choices=["Normalized Scores", "Raw Scores"],
|
| 484 |
+
value="Normalized Scores",
|
| 485 |
+
label="Score Visualization Type",
|
| 486 |
+
info="Choose which score type to visualize"
|
| 487 |
+
)
|
| 488 |
+
|
| 489 |
molecule_output = gr.HTML(label="Protein Structure")
|
| 490 |
explanation_vis = gr.Markdown("""
|
| 491 |
Score dependent colorcoding:
|
| 492 |
- 0.0-0.2: white
|
| 493 |
- 0.2–0.4: light orange
|
| 494 |
- 0.4–0.6: orange
|
| 495 |
+
- 0.6–0.8: red
|
| 496 |
+
- 0.8–1.0: firebrick
|
| 497 |
""")
|
| 498 |
predictions_output = gr.Textbox(label="Visualize Prediction with PyMol")
|
| 499 |
gr.Markdown("### Download:\n- List of predicted binding site residues\n- PDB with score in beta factor column")
|
| 500 |
download_output = gr.File(label="Download Files", file_count="multiple")
|
| 501 |
|
| 502 |
+
# Store these as state variables so we can switch between them
|
| 503 |
+
raw_scores_state = gr.State(None)
|
| 504 |
+
norm_scores_state = gr.State(None)
|
| 505 |
+
last_pdb_path = gr.State(None)
|
| 506 |
+
last_segment = gr.State(None)
|
| 507 |
+
|
| 508 |
+
def process_interface(mode, pdb_id, pdb_file, chain_id, score_type_val):
|
| 509 |
+
selected_score_type = 'normalized' if score_type_val == "Normalized Scores" else 'raw'
|
| 510 |
+
|
| 511 |
+
# First get the actual PDB file path
|
| 512 |
if mode == "PDB ID":
|
| 513 |
+
pdb_path = fetch_pdb(pdb_id) # Get the actual file path
|
| 514 |
+
if not pdb_path:
|
| 515 |
+
return "Failed to fetch PDB file", None, None, None, None, None, None
|
| 516 |
+
|
| 517 |
+
pymol_cmd, mol_vis, files, raw_scores, norm_scores = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 518 |
+
# Store the actual file path, not just the PDB ID
|
| 519 |
+
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id
|
| 520 |
elif mode == "Upload File":
|
| 521 |
_, ext = os.path.splitext(pdb_file.name)
|
| 522 |
file_path = os.path.join('./', f"{_}{ext}")
|
| 523 |
if ext == '.cif':
|
| 524 |
pdb_path = convert_cif_to_pdb(file_path)
|
| 525 |
else:
|
| 526 |
+
pdb_path = file_path
|
| 527 |
+
|
| 528 |
+
pymol_cmd, mol_vis, files, raw_scores, norm_scores = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 529 |
+
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id
|
| 530 |
else:
|
| 531 |
+
return "Error: Invalid mode selected", None, None, None, None, None, None
|
| 532 |
+
|
| 533 |
+
def update_visualization(score_type_val, raw_scores, norm_scores, pdb_path, segment):
|
| 534 |
+
if raw_scores is None or norm_scores is None or pdb_path is None or segment is None:
|
| 535 |
+
return None
|
| 536 |
+
|
| 537 |
+
# Verify the file exists
|
| 538 |
+
if not os.path.exists(pdb_path):
|
| 539 |
+
return f"Error: File not found at {pdb_path}"
|
| 540 |
+
|
| 541 |
+
# Choose scores based on radio button selection
|
| 542 |
+
selected_scores = norm_scores if score_type_val == "Normalized Scores" else raw_scores
|
| 543 |
+
|
| 544 |
+
# Generate visualization with selected scores
|
| 545 |
+
return molecule(pdb_path, selected_scores, segment)
|
| 546 |
|
| 547 |
def fetch_interface(mode, pdb_id, pdb_file):
|
| 548 |
if mode == "PDB ID":
|
|
|
|
| 550 |
elif mode == "Upload File":
|
| 551 |
_, ext = os.path.splitext(pdb_file.name)
|
| 552 |
file_path = os.path.join('./', f"{_}{ext}")
|
|
|
|
| 553 |
if ext == '.cif':
|
| 554 |
pdb_path = convert_cif_to_pdb(file_path)
|
| 555 |
else:
|
| 556 |
pdb_path= file_path
|
|
|
|
| 557 |
return pdb_path
|
| 558 |
else:
|
| 559 |
return "Error: Invalid mode selected"
|
|
|
|
| 572 |
|
| 573 |
prediction_btn.click(
|
| 574 |
process_interface,
|
| 575 |
+
inputs=[mode, pdb_input, pdb_file, segment_input, score_type],
|
| 576 |
+
outputs=[predictions_output, molecule_output, download_output,
|
| 577 |
+
raw_scores_state, norm_scores_state, last_pdb_path, last_segment]
|
| 578 |
+
)
|
| 579 |
+
|
| 580 |
+
# Update visualization when score type changes
|
| 581 |
+
score_type.change(
|
| 582 |
+
update_visualization,
|
| 583 |
+
inputs=[score_type, raw_scores_state, norm_scores_state, last_pdb_path, last_segment],
|
| 584 |
+
outputs=[molecule_output]
|
| 585 |
)
|
| 586 |
|
| 587 |
visualize_btn.click(
|
|
|
|
| 600 |
inputs=[pdb_input, segment_input],
|
| 601 |
outputs=[predictions_output, molecule_output, download_output]
|
| 602 |
)
|
|
|
|
| 603 |
demo.launch(share=True)
|
app.py
CHANGED
|
@@ -27,10 +27,7 @@ from datasets import Dataset
|
|
| 27 |
|
| 28 |
from scipy.special import expit
|
| 29 |
|
| 30 |
-
|
| 31 |
# Load model and move to device
|
| 32 |
-
#checkpoint = 'ThorbenF/prot_t5_xl_uniref50'
|
| 33 |
-
#checkpoint = 'ThorbenF/prot_t5_xl_uniref50_cryptic'
|
| 34 |
checkpoint = 'ThorbenF/prot_t5_xl_uniref50_database'
|
| 35 |
max_length = 1500
|
| 36 |
model, tokenizer = load_model(checkpoint, max_length)
|
|
@@ -45,45 +42,32 @@ def normalize_scores(scores):
|
|
| 45 |
|
| 46 |
def read_mol(pdb_path):
|
| 47 |
"""Read PDB file and return its content as a string"""
|
| 48 |
-
|
| 49 |
-
|
| 50 |
-
|
| 51 |
-
|
| 52 |
-
print(f"File not found: {pdb_path}")
|
| 53 |
-
raise
|
| 54 |
-
except Exception as e:
|
| 55 |
-
print(f"Error reading file {pdb_path}: {str(e)}")
|
| 56 |
-
raise
|
| 57 |
-
|
| 58 |
-
def fetch_structure(pdb_id: str, output_dir: str = ".") -> Optional[str]:
|
| 59 |
"""
|
| 60 |
Fetch the structure file for a given PDB ID. Prioritizes CIF files.
|
| 61 |
If a structure file already exists locally, it uses that.
|
| 62 |
"""
|
| 63 |
file_path = download_structure(pdb_id, output_dir)
|
| 64 |
-
|
| 65 |
-
return file_path
|
| 66 |
-
else:
|
| 67 |
-
return None
|
| 68 |
|
| 69 |
-
def download_structure(pdb_id: str, output_dir: str) ->
|
| 70 |
"""
|
| 71 |
Attempt to download the structure file in CIF or PDB format.
|
| 72 |
-
Returns the path to the downloaded file
|
| 73 |
"""
|
| 74 |
for ext in ['.cif', '.pdb']:
|
| 75 |
file_path = os.path.join(output_dir, f"{pdb_id}{ext}")
|
| 76 |
if os.path.exists(file_path):
|
| 77 |
return file_path
|
| 78 |
url = f"https://files.rcsb.org/download/{pdb_id}{ext}"
|
| 79 |
-
|
| 80 |
-
|
| 81 |
-
|
| 82 |
-
|
| 83 |
-
|
| 84 |
-
return file_path
|
| 85 |
-
except Exception as e:
|
| 86 |
-
print(f"Download error for {pdb_id}{ext}: {e}")
|
| 87 |
return None
|
| 88 |
|
| 89 |
def convert_cif_to_pdb(cif_path: str, output_dir: str = ".") -> str:
|
|
@@ -100,8 +84,6 @@ def convert_cif_to_pdb(cif_path: str, output_dir: str = ".") -> str:
|
|
| 100 |
|
| 101 |
def fetch_pdb(pdb_id):
|
| 102 |
pdb_path = fetch_structure(pdb_id)
|
| 103 |
-
if not pdb_path:
|
| 104 |
-
return None
|
| 105 |
_, ext = os.path.splitext(pdb_path)
|
| 106 |
if ext == '.cif':
|
| 107 |
pdb_path = convert_cif_to_pdb(pdb_path)
|
|
@@ -111,11 +93,9 @@ def create_chain_specific_pdb(input_pdb: str, chain_id: str, residue_scores: lis
|
|
| 111 |
"""
|
| 112 |
Create a PDB file with only the selected chain and residues, replacing B-factor with prediction scores
|
| 113 |
"""
|
| 114 |
-
# Read the original PDB file
|
| 115 |
parser = PDBParser(QUIET=True)
|
| 116 |
structure = parser.get_structure('protein', input_pdb)
|
| 117 |
|
| 118 |
-
# Prepare a new structure with only the specified chain and selected residues
|
| 119 |
output_pdb = f"{os.path.splitext(input_pdb)[0]}_{chain_id}_predictions_scores.pdb"
|
| 120 |
|
| 121 |
# Create scores dictionary for easy lookup
|
|
@@ -148,8 +128,57 @@ def create_chain_specific_pdb(input_pdb: str, chain_id: str, residue_scores: lis
|
|
| 148 |
|
| 149 |
return output_pdb
|
| 150 |
|
| 151 |
-
def
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 152 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 153 |
# Determine if input is a PDB ID or file path
|
| 154 |
if pdb_id_or_file.endswith('.pdb'):
|
| 155 |
pdb_path = pdb_id_or_file
|
|
@@ -158,51 +187,37 @@ def process_pdb(pdb_id_or_file, segment, score_type='normalized'):
|
|
| 158 |
pdb_id = pdb_id_or_file
|
| 159 |
pdb_path = fetch_pdb(pdb_id)
|
| 160 |
|
| 161 |
-
if not pdb_path:
|
| 162 |
-
return "Failed to fetch PDB file", None, None
|
| 163 |
-
|
| 164 |
# Determine the file format and choose the appropriate parser
|
| 165 |
_, ext = os.path.splitext(pdb_path)
|
| 166 |
parser = MMCIFParser(QUIET=True) if ext == '.cif' else PDBParser(QUIET=True)
|
| 167 |
|
| 168 |
-
|
| 169 |
-
|
| 170 |
-
structure = parser.get_structure('protein', pdb_path)
|
| 171 |
-
except Exception as e:
|
| 172 |
-
return f"Error parsing structure file: {e}", None, None
|
| 173 |
|
| 174 |
# Extract the specified chain
|
| 175 |
-
|
| 176 |
-
chain = structure[0][segment]
|
| 177 |
-
except KeyError:
|
| 178 |
-
return "Invalid Chain ID", None, None
|
| 179 |
|
| 180 |
protein_residues = [res for res in chain if is_aa(res)]
|
| 181 |
sequence = "".join(seq1(res.resname) for res in protein_residues)
|
| 182 |
sequence_id = [res.id[1] for res in protein_residues]
|
| 183 |
|
| 184 |
-
visualized_sequence = "".join(seq1(res.resname) for res in protein_residues)
|
| 185 |
-
if sequence != visualized_sequence:
|
| 186 |
-
raise ValueError("The visualized sequence does not match the prediction sequence")
|
| 187 |
-
|
| 188 |
input_ids = tokenizer(" ".join(sequence), return_tensors="pt").input_ids.to(device)
|
| 189 |
with torch.no_grad():
|
| 190 |
outputs = model(input_ids).logits.detach().cpu().numpy().squeeze()
|
| 191 |
|
| 192 |
# Calculate scores and normalize them
|
| 193 |
-
|
| 194 |
-
normalized_scores = normalize_scores(
|
| 195 |
|
| 196 |
# Choose which scores to use based on score_type
|
| 197 |
-
display_scores = normalized_scores if score_type == 'normalized' else
|
| 198 |
|
| 199 |
# Zip residues with scores to track the residue ID and score
|
| 200 |
residue_scores = [(resi, score) for resi, score in zip(sequence_id, display_scores)]
|
| 201 |
|
| 202 |
# Also save both score types for later use
|
| 203 |
-
raw_residue_scores = [(resi, score) for resi, score in zip(sequence_id,
|
| 204 |
norm_residue_scores = [(resi, score) for resi, score in zip(sequence_id, normalized_scores)]
|
| 205 |
-
|
| 206 |
|
| 207 |
# Define the score brackets
|
| 208 |
score_brackets = {
|
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@@ -223,79 +238,35 @@ def process_pdb(pdb_id_or_file, segment, score_type='normalized'):
|
|
| 223 |
residues_by_bracket[bracket].append(resi)
|
| 224 |
break
|
| 225 |
|
| 226 |
-
#
|
| 227 |
current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
|
| 228 |
-
result_str = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\n\n"
|
| 229 |
-
result_str += "Residues by Score Brackets:\n\n"
|
| 230 |
|
| 231 |
-
#
|
| 232 |
-
|
| 233 |
-
|
| 234 |
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|
| 235 |
-
|
| 236 |
-
|
| 237 |
-
for i, res in enumerate(protein_residues) if res.id[1] in residues
|
| 238 |
-
])
|
| 239 |
-
result_str += "\n\n"
|
| 240 |
-
|
| 241 |
# Create chain-specific PDB with scores in B-factor
|
| 242 |
scored_pdb = create_chain_specific_pdb(pdb_path, segment, residue_scores, protein_residues)
|
| 243 |
|
| 244 |
# Molecule visualization with updated script with color mapping
|
| 245 |
-
mol_vis = molecule(pdb_path, residue_scores, segment)
|
| 246 |
-
|
| 247 |
-
# Improved PyMOL command suggestions
|
| 248 |
-
current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
|
| 249 |
-
pymol_commands = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\n\n"
|
| 250 |
-
|
| 251 |
-
pymol_commands += f"""
|
| 252 |
-
# PyMOL Visualization Commands
|
| 253 |
-
fetch {pdb_id}, protein
|
| 254 |
-
hide everything, all
|
| 255 |
-
show cartoon, chain {segment}
|
| 256 |
-
color white, chain {segment}
|
| 257 |
-
"""
|
| 258 |
|
| 259 |
-
#
|
| 260 |
-
|
| 261 |
-
"0.0-0.2": "white",
|
| 262 |
-
"0.2-0.4": "lightorange",
|
| 263 |
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"0.4-0.6": "orange",
|
| 264 |
-
"0.6-0.8": "red",
|
| 265 |
-
"0.8-1.0": "firebrick"
|
| 266 |
-
}
|
| 267 |
-
|
| 268 |
-
# Add PyMOL commands for each score bracket
|
| 269 |
-
for bracket, residues in residues_by_bracket.items():
|
| 270 |
-
if residues: # Only add commands if there are residues in this bracket
|
| 271 |
-
color = bracket_colors[bracket]
|
| 272 |
-
resi_list = '+'.join(map(str, residues))
|
| 273 |
-
pymol_commands += f"""
|
| 274 |
-
select bracket_{bracket.replace('.', '').replace('-', '_')}, resi {resi_list} and chain {segment}
|
| 275 |
-
show sticks, bracket_{bracket.replace('.', '').replace('-', '_')}
|
| 276 |
-
color {color}, bracket_{bracket.replace('.', '').replace('-', '_')}
|
| 277 |
-
"""
|
| 278 |
-
# Create prediction and scored PDB files
|
| 279 |
-
prediction_file = f"{pdb_id}_binding_site_residues.txt"
|
| 280 |
with open(prediction_file, "w") as f:
|
| 281 |
f.write(result_str)
|
| 282 |
|
| 283 |
-
|
| 284 |
-
|
|
|
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|
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|
| 285 |
|
| 286 |
def molecule(input_pdb, residue_scores=None, segment='A'):
|
| 287 |
-
#
|
| 288 |
-
|
| 289 |
-
|
| 290 |
-
|
| 291 |
-
try:
|
| 292 |
-
# Read PDB file content
|
| 293 |
-
mol = read_mol(input_pdb)
|
| 294 |
-
except Exception as e:
|
| 295 |
-
return f"<p>Error reading PDB file: {str(e)}</p>"
|
| 296 |
-
# More granular scoring for visualization
|
| 297 |
-
#mol = read_mol(input_pdb) # Read PDB file content
|
| 298 |
-
|
| 299 |
# Prepare high-scoring residues script if scores are provided
|
| 300 |
high_score_script = ""
|
| 301 |
if residue_scores is not None:
|
|
@@ -491,9 +462,9 @@ with gr.Blocks(css="""
|
|
| 491 |
Score dependent colorcoding:
|
| 492 |
- 0.0-0.2: white
|
| 493 |
- 0.2–0.4: light orange
|
| 494 |
-
- 0.4–0.6: orange
|
| 495 |
-
- 0.6–0.8:
|
| 496 |
-
- 0.8–1.0:
|
| 497 |
""")
|
| 498 |
predictions_output = gr.Textbox(label="Visualize Prediction with PyMol")
|
| 499 |
gr.Markdown("### Download:\n- List of predicted binding site residues\n- PDB with score in beta factor column")
|
|
@@ -504,6 +475,7 @@ with gr.Blocks(css="""
|
|
| 504 |
norm_scores_state = gr.State(None)
|
| 505 |
last_pdb_path = gr.State(None)
|
| 506 |
last_segment = gr.State(None)
|
|
|
|
| 507 |
|
| 508 |
def process_interface(mode, pdb_id, pdb_file, chain_id, score_type_val):
|
| 509 |
selected_score_type = 'normalized' if score_type_val == "Normalized Scores" else 'raw'
|
|
@@ -511,12 +483,10 @@ with gr.Blocks(css="""
|
|
| 511 |
# First get the actual PDB file path
|
| 512 |
if mode == "PDB ID":
|
| 513 |
pdb_path = fetch_pdb(pdb_id) # Get the actual file path
|
| 514 |
-
if not pdb_path:
|
| 515 |
-
return "Failed to fetch PDB file", None, None, None, None, None, None
|
| 516 |
|
| 517 |
-
pymol_cmd, mol_vis, files, raw_scores, norm_scores = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 518 |
# Store the actual file path, not just the PDB ID
|
| 519 |
-
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id
|
| 520 |
elif mode == "Upload File":
|
| 521 |
_, ext = os.path.splitext(pdb_file.name)
|
| 522 |
file_path = os.path.join('./', f"{_}{ext}")
|
|
@@ -525,24 +495,70 @@ with gr.Blocks(css="""
|
|
| 525 |
else:
|
| 526 |
pdb_path = file_path
|
| 527 |
|
| 528 |
-
pymol_cmd, mol_vis, files, raw_scores, norm_scores = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 529 |
-
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id
|
| 530 |
-
|
| 531 |
-
|
| 532 |
-
|
| 533 |
-
|
| 534 |
-
if raw_scores is None or norm_scores is None or pdb_path is None or segment is None:
|
| 535 |
-
return None
|
| 536 |
-
|
| 537 |
-
# Verify the file exists
|
| 538 |
-
if not os.path.exists(pdb_path):
|
| 539 |
-
return f"Error: File not found at {pdb_path}"
|
| 540 |
|
| 541 |
# Choose scores based on radio button selection
|
| 542 |
-
|
|
|
|
| 543 |
|
| 544 |
# Generate visualization with selected scores
|
| 545 |
-
|
|
|
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|
|
|
|
|
|
| 546 |
|
| 547 |
def fetch_interface(mode, pdb_id, pdb_file):
|
| 548 |
if mode == "PDB ID":
|
|
@@ -555,8 +571,6 @@ with gr.Blocks(css="""
|
|
| 555 |
else:
|
| 556 |
pdb_path= file_path
|
| 557 |
return pdb_path
|
| 558 |
-
else:
|
| 559 |
-
return "Error: Invalid mode selected"
|
| 560 |
|
| 561 |
def toggle_mode(selected_mode):
|
| 562 |
if selected_mode == "PDB ID":
|
|
@@ -574,14 +588,14 @@ with gr.Blocks(css="""
|
|
| 574 |
process_interface,
|
| 575 |
inputs=[mode, pdb_input, pdb_file, segment_input, score_type],
|
| 576 |
outputs=[predictions_output, molecule_output, download_output,
|
| 577 |
-
raw_scores_state, norm_scores_state, last_pdb_path, last_segment]
|
| 578 |
)
|
| 579 |
|
| 580 |
-
# Update visualization when score type changes
|
| 581 |
score_type.change(
|
| 582 |
-
|
| 583 |
-
inputs=[score_type, raw_scores_state, norm_scores_state, last_pdb_path, last_segment],
|
| 584 |
-
outputs=[molecule_output]
|
| 585 |
)
|
| 586 |
|
| 587 |
visualize_btn.click(
|
|
@@ -600,4 +614,4 @@ with gr.Blocks(css="""
|
|
| 600 |
inputs=[pdb_input, segment_input],
|
| 601 |
outputs=[predictions_output, molecule_output, download_output]
|
| 602 |
)
|
| 603 |
-
demo.launch(share=True)
|
|
|
|
| 27 |
|
| 28 |
from scipy.special import expit
|
| 29 |
|
|
|
|
| 30 |
# Load model and move to device
|
|
|
|
|
|
|
| 31 |
checkpoint = 'ThorbenF/prot_t5_xl_uniref50_database'
|
| 32 |
max_length = 1500
|
| 33 |
model, tokenizer = load_model(checkpoint, max_length)
|
|
|
|
| 42 |
|
| 43 |
def read_mol(pdb_path):
|
| 44 |
"""Read PDB file and return its content as a string"""
|
| 45 |
+
with open(pdb_path, 'r') as f:
|
| 46 |
+
return f.read()
|
| 47 |
+
|
| 48 |
+
def fetch_structure(pdb_id: str, output_dir: str = ".") -> str:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 49 |
"""
|
| 50 |
Fetch the structure file for a given PDB ID. Prioritizes CIF files.
|
| 51 |
If a structure file already exists locally, it uses that.
|
| 52 |
"""
|
| 53 |
file_path = download_structure(pdb_id, output_dir)
|
| 54 |
+
return file_path
|
|
|
|
|
|
|
|
|
|
| 55 |
|
| 56 |
+
def download_structure(pdb_id: str, output_dir: str) -> str:
|
| 57 |
"""
|
| 58 |
Attempt to download the structure file in CIF or PDB format.
|
| 59 |
+
Returns the path to the downloaded file.
|
| 60 |
"""
|
| 61 |
for ext in ['.cif', '.pdb']:
|
| 62 |
file_path = os.path.join(output_dir, f"{pdb_id}{ext}")
|
| 63 |
if os.path.exists(file_path):
|
| 64 |
return file_path
|
| 65 |
url = f"https://files.rcsb.org/download/{pdb_id}{ext}"
|
| 66 |
+
response = requests.get(url, timeout=10)
|
| 67 |
+
if response.status_code == 200:
|
| 68 |
+
with open(file_path, 'wb') as f:
|
| 69 |
+
f.write(response.content)
|
| 70 |
+
return file_path
|
|
|
|
|
|
|
|
|
|
| 71 |
return None
|
| 72 |
|
| 73 |
def convert_cif_to_pdb(cif_path: str, output_dir: str = ".") -> str:
|
|
|
|
| 84 |
|
| 85 |
def fetch_pdb(pdb_id):
|
| 86 |
pdb_path = fetch_structure(pdb_id)
|
|
|
|
|
|
|
| 87 |
_, ext = os.path.splitext(pdb_path)
|
| 88 |
if ext == '.cif':
|
| 89 |
pdb_path = convert_cif_to_pdb(pdb_path)
|
|
|
|
| 93 |
"""
|
| 94 |
Create a PDB file with only the selected chain and residues, replacing B-factor with prediction scores
|
| 95 |
"""
|
|
|
|
| 96 |
parser = PDBParser(QUIET=True)
|
| 97 |
structure = parser.get_structure('protein', input_pdb)
|
| 98 |
|
|
|
|
| 99 |
output_pdb = f"{os.path.splitext(input_pdb)[0]}_{chain_id}_predictions_scores.pdb"
|
| 100 |
|
| 101 |
# Create scores dictionary for easy lookup
|
|
|
|
| 128 |
|
| 129 |
return output_pdb
|
| 130 |
|
| 131 |
+
def generate_pymol_commands(pdb_id, segment, residues_by_bracket, current_time, score_type):
|
| 132 |
+
"""Generate PyMOL commands based on score type"""
|
| 133 |
+
pymol_commands = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\nScore Type: {score_type}\n\n"
|
| 134 |
+
|
| 135 |
+
pymol_commands += f"""
|
| 136 |
+
# PyMOL Visualization Commands
|
| 137 |
+
fetch {pdb_id}, protein
|
| 138 |
+
hide everything, all
|
| 139 |
+
show cartoon, chain {segment}
|
| 140 |
+
color white, chain {segment}
|
| 141 |
+
"""
|
| 142 |
|
| 143 |
+
# Define colors for each score bracket
|
| 144 |
+
bracket_colors = {
|
| 145 |
+
"0.0-0.2": "white",
|
| 146 |
+
"0.2-0.4": "lightorange",
|
| 147 |
+
"0.4-0.6": "yelloworange",
|
| 148 |
+
"0.6-0.8": "orange",
|
| 149 |
+
"0.8-1.0": "red"
|
| 150 |
+
}
|
| 151 |
+
|
| 152 |
+
# Add PyMOL commands for each score bracket
|
| 153 |
+
for bracket, residues in residues_by_bracket.items():
|
| 154 |
+
if residues: # Only add commands if there are residues in this bracket
|
| 155 |
+
color = bracket_colors[bracket]
|
| 156 |
+
resi_list = '+'.join(map(str, residues))
|
| 157 |
+
pymol_commands += f"""
|
| 158 |
+
select bracket_{bracket.replace('.', '').replace('-', '_')}, resi {resi_list} and chain {segment}
|
| 159 |
+
show sticks, bracket_{bracket.replace('.', '').replace('-', '_')}
|
| 160 |
+
color {color}, bracket_{bracket.replace('.', '').replace('-', '_')}
|
| 161 |
+
"""
|
| 162 |
+
return pymol_commands
|
| 163 |
+
|
| 164 |
+
def generate_results_text(pdb_id, segment, residues_by_bracket, protein_residues, sequence, scores, current_time, score_type):
|
| 165 |
+
"""Generate results text based on score type"""
|
| 166 |
+
result_str = f"Prediction for PDB: {pdb_id}, Chain: {segment}\nDate: {current_time}\nScore Type: {score_type}\n\n"
|
| 167 |
+
result_str += "Residues by Score Brackets:\n\n"
|
| 168 |
+
|
| 169 |
+
# Add residues for each bracket
|
| 170 |
+
for bracket, residues in residues_by_bracket.items():
|
| 171 |
+
result_str += f"Bracket {bracket}:\n"
|
| 172 |
+
result_str += f"Columns: Residue Name, Residue Number, One-letter Code, {score_type} Score\n"
|
| 173 |
+
result_str += "\n".join([
|
| 174 |
+
f"{res.resname} {res.id[1]} {sequence[i]} {scores[i]:.2f}"
|
| 175 |
+
for i, res in enumerate(protein_residues) if res.id[1] in residues
|
| 176 |
+
])
|
| 177 |
+
result_str += "\n\n"
|
| 178 |
+
|
| 179 |
+
return result_str
|
| 180 |
+
|
| 181 |
+
def process_pdb(pdb_id_or_file, segment, score_type='normalized'):
|
| 182 |
# Determine if input is a PDB ID or file path
|
| 183 |
if pdb_id_or_file.endswith('.pdb'):
|
| 184 |
pdb_path = pdb_id_or_file
|
|
|
|
| 187 |
pdb_id = pdb_id_or_file
|
| 188 |
pdb_path = fetch_pdb(pdb_id)
|
| 189 |
|
|
|
|
|
|
|
|
|
|
| 190 |
# Determine the file format and choose the appropriate parser
|
| 191 |
_, ext = os.path.splitext(pdb_path)
|
| 192 |
parser = MMCIFParser(QUIET=True) if ext == '.cif' else PDBParser(QUIET=True)
|
| 193 |
|
| 194 |
+
# Parse the structure file
|
| 195 |
+
structure = parser.get_structure('protein', pdb_path)
|
|
|
|
|
|
|
|
|
|
| 196 |
|
| 197 |
# Extract the specified chain
|
| 198 |
+
chain = structure[0][segment]
|
|
|
|
|
|
|
|
|
|
| 199 |
|
| 200 |
protein_residues = [res for res in chain if is_aa(res)]
|
| 201 |
sequence = "".join(seq1(res.resname) for res in protein_residues)
|
| 202 |
sequence_id = [res.id[1] for res in protein_residues]
|
| 203 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| 204 |
input_ids = tokenizer(" ".join(sequence), return_tensors="pt").input_ids.to(device)
|
| 205 |
with torch.no_grad():
|
| 206 |
outputs = model(input_ids).logits.detach().cpu().numpy().squeeze()
|
| 207 |
|
| 208 |
# Calculate scores and normalize them
|
| 209 |
+
raw_scores = expit(outputs[:, 1] - outputs[:, 0])
|
| 210 |
+
normalized_scores = normalize_scores(raw_scores)
|
| 211 |
|
| 212 |
# Choose which scores to use based on score_type
|
| 213 |
+
display_scores = normalized_scores if score_type == 'normalized' else raw_scores
|
| 214 |
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| 215 |
# Zip residues with scores to track the residue ID and score
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| 216 |
residue_scores = [(resi, score) for resi, score in zip(sequence_id, display_scores)]
|
| 217 |
|
| 218 |
# Also save both score types for later use
|
| 219 |
+
raw_residue_scores = [(resi, score) for resi, score in zip(sequence_id, raw_scores)]
|
| 220 |
norm_residue_scores = [(resi, score) for resi, score in zip(sequence_id, normalized_scores)]
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|
| 221 |
|
| 222 |
# Define the score brackets
|
| 223 |
score_brackets = {
|
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|
| 238 |
residues_by_bracket[bracket].append(resi)
|
| 239 |
break
|
| 240 |
|
| 241 |
+
# Generate timestamp
|
| 242 |
current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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|
| 243 |
|
| 244 |
+
# Generate result text and PyMOL commands based on score type
|
| 245 |
+
display_score_type = "Normalized" if score_type == 'normalized' else "Raw"
|
| 246 |
+
result_str = generate_results_text(pdb_id, segment, residues_by_bracket, protein_residues, sequence,
|
| 247 |
+
display_scores, current_time, display_score_type)
|
| 248 |
+
pymol_commands = generate_pymol_commands(pdb_id, segment, residues_by_bracket, current_time, display_score_type)
|
| 249 |
+
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| 250 |
# Create chain-specific PDB with scores in B-factor
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| 251 |
scored_pdb = create_chain_specific_pdb(pdb_path, segment, residue_scores, protein_residues)
|
| 252 |
|
| 253 |
# Molecule visualization with updated script with color mapping
|
| 254 |
+
mol_vis = molecule(pdb_path, residue_scores, segment)
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|
| 255 |
|
| 256 |
+
# Create prediction file
|
| 257 |
+
prediction_file = f"{pdb_id}_{display_score_type.lower()}_binding_site_residues.txt"
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|
| 258 |
with open(prediction_file, "w") as f:
|
| 259 |
f.write(result_str)
|
| 260 |
|
| 261 |
+
scored_pdb_name = f"{pdb_id}_{segment}_{display_score_type.lower()}_predictions_scores.pdb"
|
| 262 |
+
os.rename(scored_pdb, scored_pdb_name)
|
| 263 |
+
|
| 264 |
+
return pymol_commands, mol_vis, [prediction_file, scored_pdb_name], raw_residue_scores, norm_residue_scores, pdb_id, segment
|
| 265 |
|
| 266 |
def molecule(input_pdb, residue_scores=None, segment='A'):
|
| 267 |
+
# Read PDB file content
|
| 268 |
+
mol = read_mol(input_pdb)
|
| 269 |
+
|
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|
| 270 |
# Prepare high-scoring residues script if scores are provided
|
| 271 |
high_score_script = ""
|
| 272 |
if residue_scores is not None:
|
|
|
|
| 462 |
Score dependent colorcoding:
|
| 463 |
- 0.0-0.2: white
|
| 464 |
- 0.2–0.4: light orange
|
| 465 |
+
- 0.4–0.6: yellow orange
|
| 466 |
+
- 0.6–0.8: orange
|
| 467 |
+
- 0.8–1.0: red
|
| 468 |
""")
|
| 469 |
predictions_output = gr.Textbox(label="Visualize Prediction with PyMol")
|
| 470 |
gr.Markdown("### Download:\n- List of predicted binding site residues\n- PDB with score in beta factor column")
|
|
|
|
| 475 |
norm_scores_state = gr.State(None)
|
| 476 |
last_pdb_path = gr.State(None)
|
| 477 |
last_segment = gr.State(None)
|
| 478 |
+
last_pdb_id = gr.State(None)
|
| 479 |
|
| 480 |
def process_interface(mode, pdb_id, pdb_file, chain_id, score_type_val):
|
| 481 |
selected_score_type = 'normalized' if score_type_val == "Normalized Scores" else 'raw'
|
|
|
|
| 483 |
# First get the actual PDB file path
|
| 484 |
if mode == "PDB ID":
|
| 485 |
pdb_path = fetch_pdb(pdb_id) # Get the actual file path
|
|
|
|
|
|
|
| 486 |
|
| 487 |
+
pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_id_result, segment = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 488 |
# Store the actual file path, not just the PDB ID
|
| 489 |
+
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id, pdb_id_result
|
| 490 |
elif mode == "Upload File":
|
| 491 |
_, ext = os.path.splitext(pdb_file.name)
|
| 492 |
file_path = os.path.join('./', f"{_}{ext}")
|
|
|
|
| 495 |
else:
|
| 496 |
pdb_path = file_path
|
| 497 |
|
| 498 |
+
pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_id_result, segment = process_pdb(pdb_path, chain_id, selected_score_type)
|
| 499 |
+
return pymol_cmd, mol_vis, files, raw_scores, norm_scores, pdb_path, chain_id, pdb_id_result
|
| 500 |
+
|
| 501 |
+
def update_visualization_and_files(score_type_val, raw_scores, norm_scores, pdb_path, segment, pdb_id):
|
| 502 |
+
if raw_scores is None or norm_scores is None or pdb_path is None or segment is None or pdb_id is None:
|
| 503 |
+
return None, None, None
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 504 |
|
| 505 |
# Choose scores based on radio button selection
|
| 506 |
+
selected_score_type = 'normalized' if score_type_val == "Normalized Scores" else 'raw'
|
| 507 |
+
selected_scores = norm_scores if selected_score_type == 'normalized' else raw_scores
|
| 508 |
|
| 509 |
# Generate visualization with selected scores
|
| 510 |
+
mol_vis = molecule(pdb_path, selected_scores, segment)
|
| 511 |
+
|
| 512 |
+
# Generate PyMOL commands and downloadable files
|
| 513 |
+
# Get structure for residue info
|
| 514 |
+
_, ext = os.path.splitext(pdb_path)
|
| 515 |
+
parser = MMCIFParser(QUIET=True) if ext == '.cif' else PDBParser(QUIET=True)
|
| 516 |
+
structure = parser.get_structure('protein', pdb_path)
|
| 517 |
+
chain = structure[0][segment]
|
| 518 |
+
protein_residues = [res for res in chain if is_aa(res)]
|
| 519 |
+
sequence = "".join(seq1(res.resname) for res in protein_residues)
|
| 520 |
+
|
| 521 |
+
# Define score brackets
|
| 522 |
+
score_brackets = {
|
| 523 |
+
"0.0-0.2": (0.0, 0.2),
|
| 524 |
+
"0.2-0.4": (0.2, 0.4),
|
| 525 |
+
"0.4-0.6": (0.4, 0.6),
|
| 526 |
+
"0.6-0.8": (0.6, 0.8),
|
| 527 |
+
"0.8-1.0": (0.8, 1.0)
|
| 528 |
+
}
|
| 529 |
+
|
| 530 |
+
# Initialize a dictionary to store residues by bracket
|
| 531 |
+
residues_by_bracket = {bracket: [] for bracket in score_brackets}
|
| 532 |
+
|
| 533 |
+
# Categorize residues into brackets
|
| 534 |
+
for resi, score in selected_scores:
|
| 535 |
+
for bracket, (lower, upper) in score_brackets.items():
|
| 536 |
+
if lower <= score < upper:
|
| 537 |
+
residues_by_bracket[bracket].append(resi)
|
| 538 |
+
break
|
| 539 |
+
|
| 540 |
+
# Generate timestamp
|
| 541 |
+
current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
|
| 542 |
+
|
| 543 |
+
# Generate result text and PyMOL commands based on score type
|
| 544 |
+
display_score_type = "Normalized" if selected_score_type == 'normalized' else "Raw"
|
| 545 |
+
scores_array = [score for _, score in selected_scores]
|
| 546 |
+
result_str = generate_results_text(pdb_id, segment, residues_by_bracket, protein_residues, sequence,
|
| 547 |
+
scores_array, current_time, display_score_type)
|
| 548 |
+
pymol_commands = generate_pymol_commands(pdb_id, segment, residues_by_bracket, current_time, display_score_type)
|
| 549 |
+
|
| 550 |
+
# Create chain-specific PDB with scores in B-factor
|
| 551 |
+
scored_pdb = create_chain_specific_pdb(pdb_path, segment, selected_scores, protein_residues)
|
| 552 |
+
|
| 553 |
+
# Create prediction file
|
| 554 |
+
prediction_file = f"{pdb_id}_{display_score_type.lower()}_binding_site_residues.txt"
|
| 555 |
+
with open(prediction_file, "w") as f:
|
| 556 |
+
f.write(result_str)
|
| 557 |
+
|
| 558 |
+
scored_pdb_name = f"{pdb_id}_{segment}_{display_score_type.lower()}_predictions_scores.pdb"
|
| 559 |
+
os.rename(scored_pdb, scored_pdb_name)
|
| 560 |
+
|
| 561 |
+
return mol_vis, pymol_commands, [prediction_file, scored_pdb_name]
|
| 562 |
|
| 563 |
def fetch_interface(mode, pdb_id, pdb_file):
|
| 564 |
if mode == "PDB ID":
|
|
|
|
| 571 |
else:
|
| 572 |
pdb_path= file_path
|
| 573 |
return pdb_path
|
|
|
|
|
|
|
| 574 |
|
| 575 |
def toggle_mode(selected_mode):
|
| 576 |
if selected_mode == "PDB ID":
|
|
|
|
| 588 |
process_interface,
|
| 589 |
inputs=[mode, pdb_input, pdb_file, segment_input, score_type],
|
| 590 |
outputs=[predictions_output, molecule_output, download_output,
|
| 591 |
+
raw_scores_state, norm_scores_state, last_pdb_path, last_segment, last_pdb_id]
|
| 592 |
)
|
| 593 |
|
| 594 |
+
# Update visualization, PyMOL commands, and files when score type changes
|
| 595 |
score_type.change(
|
| 596 |
+
update_visualization_and_files,
|
| 597 |
+
inputs=[score_type, raw_scores_state, norm_scores_state, last_pdb_path, last_segment, last_pdb_id],
|
| 598 |
+
outputs=[molecule_output, predictions_output, download_output]
|
| 599 |
)
|
| 600 |
|
| 601 |
visualize_btn.click(
|
|
|
|
| 614 |
inputs=[pdb_input, segment_input],
|
| 615 |
outputs=[predictions_output, molecule_output, download_output]
|
| 616 |
)
|
| 617 |
+
demo.launch(share=True)
|