WU-BLAST has no minimum word size. Also Paracel-BLAST, which is more similar to NCBI-BLAST can also go below 7. -Ian On Tue, 15 Apr 2003, Tim Harsch wrote: > A colleague of mine is trying to use blast to determine very loose matches. > He would like to change the minimum seed length, which is hard-coded into > Blast, from 7 to 5. Does anyone know a backdoor way, ie undocumented > parameter, which could do this? Or, where we might find the blast source > code so we can make this change manually? > > Tim Harsch > Computer Scientist > Lawrence Livermore National Laboratory > (925) 423-1135 > > _______________________________________________ > Bioclusters maillist - Bioclusters@bioinformatics.org > https://bioinformatics.org/mailman/listinfo/bioclusters >