RefSeq: NCBI Reference Sequence Database
A comprehensive, integrated, non-redundant, well-annotated set of reference sequences including genomic, transcript, and protein.
RefSeq Access
Announcements
May 6, 2025
RefSeq Release 230 is available for FTP
This release includes:
- Proteins:
- 407,964,097
- Transcripts:
- 71,063,686
- Organisms:
- 165,372
- Available at:
- ftp://ftp.ncbi.nlm.nih.gov/refseq/release/
- Documentation:
- Release Notes
See previous announcements, follow NCBI on Twitter, or subscribe to NCBI's refseq-announce mail list to receive announcements.