We’ve made some recent enhancements to the BLAST+ applications that allow you to:

1. Limit your search by taxonomy using information built into the BLAST databases
2. Search sequences by accession faster
3. Use blastdbcmd to retrieve sequences by taxonomy from a BLAST database

The new version of the BLAST databases (version 5, release notes) supports the items listed above. You can access the new executables on FTP. Sample version 5 databases are also available.

Note: This is an alpha release to allow users to test and comment on new features.

Problems/Feedback

Please send problem reports and feedback to blast-help@ncbi.nlm.nih.gov or write to the Help Desk.

• What's New