There is BLAST (called legacy BLAST) and a newer BLAST+ from NCBI (National Center for
Biotechnology Information) and it can be confusing.
NCBI Homepage: http://blast.ncbi.nlm.nih.gov
The program names and functions in blast and blast+ are quite different. See: http://www.ncbi.nlm.nih.gov/books/NBK52640/
We have both installed on the cluster.
$ yum info blast
$ yum info ncbi-blast
Also called legacy blast, it is based on the NCBI C-toolkit.
These old versions can be found here:
https://ftp.ncbi.nlm.nih.gov/blast/executables/legacy.NOTSUPPORTED/
Filenames are of the form: blast-#.#.#-CHIP-OS.tar.gz
Versions up to 2.2.26
Newer one based on the NCBI C++ toolkit.
All versions are found here: https://ftp.ncbi.nlm.nih.gov/blast/executables/blast+/
The latest version is found here: https://ftp.ncbi.nlm.nih.gov/blast/executables/LATEST/
Filenames are of the form: ncbi-blast-#.#.#+-CHIP-OS.tar.gz
Versions from 2.2.18 onwards.