- The 2.9.0 programs handle the new four character identifiers for chains of 3D structure records from RCSB Protein Data Bank (PDB). The previous version of the BLAST databases and programs do not support these identifiers. See the MMDB News for additional details about the PDB change and the impact on NCBI Structure resources.
- Another important improvement in 2.9.0 is the ability to configure the output separator for tabular and CSV output formats. See the BLAST Manual for details.
More improvements and a few bug fixes with this release are detailed in the release notes.
For more information on new database version, BLASTDBv5 (download), see the previous NCBI Insights article and the recording of our webinar. We will continue to update the BLAST databases in their current version (BLASTDBv4) until September 2019.