Fasta A fast protein or nucleotid comparison application
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comparison access Run protein quick Quick Run access programs My Documents access nucleotide hot keys documents access

Fasta Description

FASTA is a comprehensive application suite that can be used for fast protein or nucleotide comparison. This program achieves a high level of sensitivity for similarity searching at high speed. This is achieved by performing optimised searches for local alignments using a substitution matrix. The high speed of this program is achieved by using the observed pattern of word hits to identify potential matches before attempting the more time consuming optimised search. The trade-off between speed and sensitivity is controlled by the ktup parameter, which specifies the size of the word. Increasing the ktup decreases the number of background hits. Not every word hit is investigated but instead initially looks for segment's containing several nearby hits.

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