B3Pred Dataset_3 source FASTAs (machine-readable mirror for reproducible benchmarking)

Unmodified machine-readable mirror of the B3Pred Dataset_3 source sequences (269 positive / 2690 negative peptides, FASTA), fetched from https://webs.iiitd.edu.in/raghava/b3pred/ on 2026-07-14. Deposited because the upstream archival record (Zenodo 10.5281/zenodo.20093418) contains only PDF renderings and software, no machine-readable sequence files, leaving the mutable live web server as the sole retrievable source. These FASTAs reproduce the canonical permea-bbb-audit benchmark to specification (EXACT on discrete columns; |delta|<1e-9 on float features). See RECORD_DESCRIPTION.md for full provenance, checksums, and validation. Original data and all scientific credit: Kumar et al. 2021, Pharmaceutics 13:1237, doi:10.3390/pharmaceutics13081237. License MIT (inherited from source). This is a verbatim mirror; Permea-lab created none of this data and re-hosts nothing curated.