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---
license: cc-by-4.0
task_categories:
- text-generation
tags:
- biology
- chemistry
- antibody
- antigen
- drug-design
- protein
- amino-acid
pretty_name: SAbDab June 2025 - Curated Antibody-Antigen Sequences
size_categories:
- 1K<n<10K
---

# 🦋 peleke-1 Training Data | SAbDab Antibody-Antigen Complex Sequences

A curated subset of [SAbDab](https://opig.stats.ox.ac.uk/webapps/sabdab-sabpred/sabdab) from June 2025 that includes antibody-antigen pairs of sequences.


## Columns:

|      **Column Name**     |                             **Description**                            |            **Example**           |
|:------------------------:|:----------------------------------------------------------------------:|:--------------------------------:|
| pdb_id                   | The PDB ID on Protein Data Bank                                        | 8xa4                             |
| h_chain_id               | The chain ID of the antibody's heavy chain                             | C                                |
| l_chain_id               | The chain ID of the antibody's light chain                             | D                                |
| antigen_ids              | A \|-delimited list of chain IDs of the antigen chain(s)               | A\|B                             |
| h_chain_seq              | The heavy chain amino acid sequence                                    | QLQLQESGPG…                      |
| l_chain_seq              | The light chain amino acid sequence                                    | EIVLTQSPGT…                      |
| antigen_seqs             | The antigen sequence(s), \|-delimited                                  | SCNGL...\|SCNGL…                 |
| antibody_seqs            | The heavy and light chain sequences, \|-delimited                      | QLQLQ...\|EIVLT…                 |
| h_chain_fv_seq           | The heavy chain sequence, trimmed to the Fv portion                    | QLQLQESGPG…                      |
| l_chain_fv_seq           | The light chain sequence, trimmed to the Fv portion                    | EIVLTQSPGT…                      |
| antibody_fv_seqs         | The heavy and light chain Fv sequences, \|-delimited                   | QLQLQ...\|EIVLT…                 |
| highlighted_epitope_seqs | The antigen sequence(s) with epitope residues encased in [ ]           | ...WLI[D][Y]V[E][D][T]WGS…       |
| epitope_residues         | The list of epitope residues, \|-delimited in a "chain: AA #" format   | A:ARG 176\|A:ASP 146\|A:ASP 150… |