This module uses the
blastall program to compare all the input
sequences against a prebuilt blast database of screen sequences. It is not
possible to compare against a subset of the database - to do this build a new
blast database using formatdb. This module is an alternative to the
Screen Sequences module which uses the
Blast is not included as part of the Staden Package. It is available from the
- Option: BLAST database
This is the filename of the BLAST database to screen against, with the
`.nhr', `.nin' and `.nsq' suffixes removed.
- Option: Match fraction
This is the total percentage of the sequence which much have a blast match
somewhere in the BLAST database searched in order to reject this sequence.
Segments of the input sequence that match multiple components in the BLAST
database are only counted once when computing this percentage, but the
locations of the matches in the BLAST database do not need to be consecutive.
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Last generated on 2 Febuary 1999.