[BiO BB] restrict the blast result by e-value?

NewGene newgene at bigfoot.com
Tue Feb 19 16:03:06 EST 2002

Hi, group,
        If I do a blast search and want only hits with 100% identity 
between query and subject, how can I specify the e-value or other 
parameters for this purpose? I am not familiar with the underlying 
statistics of Blast, but it seems that the query sequences with same length 
have the same e-values for perfect match. If there is a formula available 
to predict this e-value, it will help to put it into scripts run my 
localblast automatically using any length sequence.

	Thanks in advance for your help.

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