---
license_name: creative-commons-attribution-4.0-international

pretty_name: AfCycDesign Hallucinated Scaffolds
configs:
  - config_name: main
    data_files:
      - split: afcycpep_hallucinated
        path: pda_exported_designs.csv
        
task_categories:

  - other
tags:
  - biology
  - protein
  - structure
  - PDB
  - PISCES
  - CullPDB
  - sequence
  - curation
language: en
size_categories:
  - "n>1M"
---
# PISCES-CulledPDB

Curated protein chain tables from PISCES/CullPDB: one row per chain with sequence and metadata.

**Dataset:** [PRMegathon26/PISCES-CulledPDB](https://huggingface.co/datasets/PRMegathon26/PISCES-CulledPDB)

Use the **subset dropdown** in the Hugging Face Data Viewer to switch between the main table and 242 curation subsets.

## Summary

| Item | Description |
|------|-------------|
| **Main CSV** | `curated_csv/cullpdb_combined_chains.csv` — full chain table |
| **Subsets** | `curated_csv/subsets/*.csv` — 242 files (same columns) |
| **Index** | `curated_csv/cullpdb_list_fasta_index.csv` |

Full list of subset paths: `curated_csv/dataset_metadata.json` (keys `data_paths`, `subset_paths`).

## Columns (chain CSVs)

| Column | Description |
|--------|-------------|
| **pdb_chain** | PDB chain ID (e.g. 1ABC_A) |
| **pdb** | PDB ID (first 4 chars) |
| **chain** | Chain ID |
| **sequence** | Amino acid sequence (one-letter) |
| **len** | Sequence length |
| **method** | Experimental method (e.g. XRAY, NMR) |
| **resolution** | Resolution in Å (per structure) |
| **rfac** | R-factor |
| **freerfac** | Free R-factor |
| **pc** | Sequence identity cutoff % used for this subset |
| **no_breaks** | Whether chain has no breaks (yes/no) |
| **R** | R-factor cutoff used for this subset |
| **source_list** | Subset list basename (identifies curation parameters) |

## Usage

```python
from huggingface_hub import hf_hub_download
import pandas as pd

path = hf_hub_download(repo_id="PRMegathon26/PISCES-CulledPDB", filename="curated_csv/cullpdb_combined_chains.csv", repo_type="dataset")
df = pd.read_csv(path)
```

## License

cc-by-4.0