Blastn M0 -> M8 Bug

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10.1 years ago

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Hi,all

Does anyone meet this question.

Blastn Error：

Error ：m=0, E-value = e-141，Gaps=3, However when m=8，E-value is 2e-141, Gaps=2

Tool：Blast

The version number：blast-2.2.26 /blastn

Parameter：default

Query ：DNA sequence, 1477 bp, test.fa

Database: Rv0002, 1209 bp, Rv0002.fa

Output:

m=0

Score = 490 bits (247), Expect = e-141

Identities = 263/266 (98%), Gaps = 3/266 (1%)

Strand = Plus / Plus

m=8

test Rv0002 98.87 266 0 2 944 1206 178 443 2e-141 490

Thanks very much!

blastn • 1.9k views

ADD COMMENT • link 10.1 years ago by • 0

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ADD REPLY • link 10.1 years ago by Pierre Lindenbaum 161k

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As asked on SEQanswers, have you tried the current release of BLAST+ which has had many bug fixes.

ADD REPLY • link 10.1 years ago by Peter 6.0k

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Thanks a lot ,it's OK,I think may they have the different algorithm.

ADD REPLY • link 10.1 years ago by • 0

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