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note - FIZ Karlsruhe

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VIII: BLAST advanced options<br />

Parameter Code Defaults / Valid values<br />

Expectation value -e<br />

Filter -f<br />

Word Size -w<br />

Strand -s<br />

Matrix -m<br />

Gap Penalty -g<br />

Gap Extension -x<br />

Penalty for<br />

nucleotide mismatch<br />

Reward for<br />

nucleotide match<br />

Helpful<br />

HINT<br />

Default 10; Integers and floating point<br />

numbers<br />

Default t (true, on); additionally f (false,<br />

off), and c (coiled coiled) for nucleotides<br />

only<br />

Default 11 for nucleotides (7-23)<br />

Default 3 for peptides (2)<br />

Default 3 resp. BOTH; 1 resp. SIN and 2<br />

resp. COM<br />

Default BLOSUM62; additionally<br />

BLOSUM45, BLOSUM80, PAM30 and<br />

PAM70<br />

Default 11 for peptides<br />

Default 5 for nucleotides<br />

(positive integers)<br />

Note that for a given matrix only certain<br />

gap costs are allowed<br />

Default 1 for peptides<br />

Default 2 for nucleotides<br />

(positive integers)<br />

Note that for a given matrix only certain<br />

gap extension costs are allowed<br />

-q Default –3 (negative integers)<br />

-r Default 1 (1-8)<br />

See also Exploring BLAST advanced options on page 49.<br />

Appendices<br />

GENESEQ on STN (DGENE) Workshop Manual | Page 137

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