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@@ -35,7 +35,7 @@ This pipeline identifies high-confidence anti-CRISPR (ACR) candidates from Folds
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  │ Step 2: Structural Similarity Screening (Foldseek) │
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  │ ├─ 2a: Inhibition Type Probability Screening │
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  │ │ - inhibition_type_probability = 1.0 │
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- │ │
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  │ └─ 2b: TM-score Thresholding │
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  │ - alntmscore > 0.7 │
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  │ - qtmscore > 0.7 │
@@ -61,18 +61,14 @@ This pipeline identifies high-confidence anti-CRISPR (ACR) candidates from Folds
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  ┌────────────┴────────────┐
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  ▼ ▼
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  ┌──────────────┐ ┌──────────────┐
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- │ Pass: 12 │ │ Reject: 14
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  │ records │ │ (In DB) │
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  └──────┬───────┘ └──────────────┘
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  ┌─────────────────────────────────────────────────────────────────┐
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  │ Final Candidates │
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- │ - 12 novel high-confidence ACRs │
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- │ - Distribution: AcrIF3(2), AcrIF11(2), AcrIE8.1(1), │
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- │ AcrIB2(1), AcrIE2(1), AcrIIA12(1), │
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- │ AcrIC9(1), AcrIIA14(1), AcrIE9(1), │
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- │ AcrIC6(1) │
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  └─────────────────────────────────────────────────────────────────┘
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  ```
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@@ -90,14 +86,6 @@ This pipeline identifies high-confidence anti-CRISPR (ACR) candidates from Folds
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  | `acr_verified_2025_pdb/*.pdb` | Reference structure database for Foldseek | anti-CRISPRdb v3.0 (verified) | - |
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  | `anti-CRISPRdb3_for_psiblast.fasta` | Deduplication reference DB | anti-CRISPRdb v3.0 (non-predict) | 1,192 |
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- ### Output Files
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-
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- | File | Description | Records |
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- |------|-------------|---------|
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- | `seq_similar_foldseek_out_2025_acr_2026.csv` | Foldseek structural alignment results | 312 |
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- | `filtered_high_confidence.csv` | High-confidence candidates (Steps 1-2) | 26 |
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- | `filtered_not_in_db.csv` | Final novel candidates (All steps) | 12 |
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-
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  ---
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  ## Software and Tools
@@ -125,7 +113,6 @@ Candidate prophage proteins are subjected to homology screening against the anti
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  | Metric | Value |
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  |--------|-------|
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  | Input records | All prophage proteins |
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- | Records passing | 312 |
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  ### Step 2: Structural Similarity Screening (Foldseek-based)
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@@ -137,11 +124,6 @@ Sequence-similar candidates from Step 1 undergo three-dimensional structural com
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  This threshold ensures only candidates with the highest confidence for CRISPR-Cas inhibition mechanism are retained. The inhibition type probability represents the classifier's confidence that the query protein shares the same inhibition mechanism as the target ACR.
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- | Metric | Value |
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- |--------|-------|
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- | Input records | 312 |
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- | Records passing | 26 |
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- | Retention rate | 8.3% |
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  #### Step 2b: Structural Similarity Thresholding (TM-score)
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@@ -155,81 +137,10 @@ This threshold ensures only candidates with the highest confidence for CRISPR-Ca
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  **Rationale:** TM-score thresholds of >0.7 indicate proteins with highly similar 3D structures, suggesting conserved functional mechanisms. All three metrics are required to ensure bidirectional structural conservation between query and target.
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- | Metric | Value |
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- |--------|-------|
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- | Input records | 26 |
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- | Records passing | 26 |
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- | Retention rate | 100% |
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-
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  ### Step 3: Reference Database Filtering
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- **Database:** `anti-CRISPRdb3_for_psiblast.fasta`
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  - Total sequences: 1,192
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  - Source: anti-CRISPRdb v3.0 (excluding predicted entries)
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- **Criterion:** Candidate sequence must **NOT** be present in the reference database.
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-
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- | Metric | Value |
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- |--------|-------|
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- | Input records | 26 |
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- | Records removed (in DB) | 14 |
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- | Records retained | 12 |
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- | Retention rate | 46.2% |
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-
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- ---
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-
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- ## Statistics Summary
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-
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- | Filtering Step | Records In | Records Out | Retention Rate | Cumulative Rate |
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- |----------------|------------|-------------|----------------|-----------------|
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- | Step 1: BLASTP screening | All | 312 | - | - |
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- | Step 2a: Probability = 1.0 | 312 | 26 | 8.3% | 8.3% |
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- | Step 2b: TM-scores > 0.7 | 26 | 26 | 100% | 8.3% |
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- | Step 3: Remove DB matches | 26 | 12 | 46.2% | 3.8% |
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- | **Final candidates** | **312** | **12** | **-** | **3.8%** |
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-
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- ---
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-
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- ## Final ACR Candidate Distribution
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-
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- | ACR Type | Count | CRISPR-Cas System | Query IDs |
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- |----------|-------|-------------------|-----------|
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- | AcrIF3 | 2 | Type I-F | KTK51907.1, ESR95706.1 |
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- | AcrIF11 | 2 | Type I-F | WP_057390551.1, WP_103182539.1 |
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- | AcrIE8.1 | 1 | Type I-E | ATM37883.1 |
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- | AcrIB2 | 1 | Type I-B | PBF40835.1 |
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- | AcrIE2 | 1 | Type I-E | PBX41287.1 |
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- | AcrIIA12 | 1 | Type II-A | PCZ07134.1 |
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- | AcrIC9 | 1 | Type I-C | WP_016071148.1 |
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- | AcrIIA14 | 1 | Type II-A | WP_411756513.1 |
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- | AcrIE9 | 1 | Type I-E | WP_108234913.1 |
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- | AcrIC6 | 1 | Type I-C | WP_108234914.1 |
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- | **Total** | **12** | - | - |
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-
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- ---
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-
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- ## Data Availability
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-
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- All input and output files are available in the `double_similar/` directory:
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-
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- - **Raw data:** `seq_similar_foldseek_out_2025_acr_2026.csv`
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- - **Intermediate results:** `filtered_high_confidence.csv`
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- - **Final candidates:** `filtered_not_in_db.csv`
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- - **Reference database:** `anti-CRISPRdb3_for_psiblast.fasta`
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-
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- ---
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-
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- ## References
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-
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- 1. van Kempen, M. et al. Fast and accurate protein structure search with Foldseek. *Nat. Biotechnol.* **42**, 243-246 (2024).
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- 2. [anti-CRISPRdb reference to be added]
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-
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- ---
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-
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- ## Contact
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-
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- For questions regarding this pipeline, please contact [email to be added].
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-
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- ---
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-
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- *Last updated: 2026-04-04*
 
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  │ Step 2: Structural Similarity Screening (Foldseek) │
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  │ ├─ 2a: Inhibition Type Probability Screening │
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  │ │ - inhibition_type_probability = 1.0 │
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+ │ │
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  │ └─ 2b: TM-score Thresholding │
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  │ - alntmscore > 0.7 │
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  │ - qtmscore > 0.7 │
 
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  ┌────────────┴────────────┐
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  ▼ ▼
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  ┌──────────────┐ ┌──────────────┐
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+ │ Pass: 10 │ │ Reject: 16
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  │ records │ │ (In DB) │
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  └──────┬───────┘ └──────────────┘
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  ┌─────────────────────────────────────────────────────────────────┐
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  │ Final Candidates │
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+ │ - 10 novel high-confidence ACRs │
 
 
 
 
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  └─────────────────────────────────────────────────────────────────┘
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  ```
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  | `acr_verified_2025_pdb/*.pdb` | Reference structure database for Foldseek | anti-CRISPRdb v3.0 (verified) | - |
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  | `anti-CRISPRdb3_for_psiblast.fasta` | Deduplication reference DB | anti-CRISPRdb v3.0 (non-predict) | 1,192 |
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  ---
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  ## Software and Tools
 
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  | Metric | Value |
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  |--------|-------|
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  | Input records | All prophage proteins |
 
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  ### Step 2: Structural Similarity Screening (Foldseek-based)
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124
 
125
  This threshold ensures only candidates with the highest confidence for CRISPR-Cas inhibition mechanism are retained. The inhibition type probability represents the classifier's confidence that the query protein shares the same inhibition mechanism as the target ACR.
126
 
 
 
 
 
 
127
 
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  #### Step 2b: Structural Similarity Thresholding (TM-score)
129
 
 
137
 
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  **Rationale:** TM-score thresholds of >0.7 indicate proteins with highly similar 3D structures, suggesting conserved functional mechanisms. All three metrics are required to ensure bidirectional structural conservation between query and target.
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  ### Step 3: Reference Database Filtering
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+ **Database:** `anti-CRISPRdb3(verified)`
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  - Total sequences: 1,192
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  - Source: anti-CRISPRdb v3.0 (excluding predicted entries)
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+ **Criterion:** Candidate sequence must **NOT** be present in the reference database.