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Top Forums Shell Programming and Scripting Shell script for changing the accession number of DNA sequences in a FASTA file Post 302881543 by margarita on Monday 30th of December 2013 07:54:15 AM
Old 12-30-2013
Shell script for changing the accession number of DNA sequences in a FASTA file

Hi,

I am having a file of dna sequences in fasta format which look like this:
>admin_1_45
atatagcaga
>admin_1_46
atatagcagaatatatat

with many such thousands of sequences in a single file. I want to the replace the accession Id "admin_1_45" similarly in following sequences to "mydesired_name_45" replacing serially 46,47, 48 with my desired name as static next to each of the > symbol.

kindly help me with the script
 

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TFBS::PatternGen::SimplePFM(3pm)			User Contributed Perl Documentation			  TFBS::PatternGen::SimplePFM(3pm)

NAME
TFBS::PatternGen::SimplePFM - a simple position frequency matrix factory SYNOPSIS
my @sequences = qw( AAGCCT AGGCAT AAGCCT AAGCCT AGGCAT AGGCCT AGGCAT AGGTTT AGGCAT AGGCCT AGGCCT ); my $patterngen = TFBS::PatternGen::SimplePFM->new(-seq_list=>@sequences); my $pfm = $patterngen->pattern(); # $pfm is now a TFBS::Matrix::PFM object DESCRIPTION
TFBS::PatternGen::SimplePFM generates a position frequency matrix from a set of nucleotide sequences of equal length, The sequences can be passed either as strings, as Bio::Seq objects or as a fasta file. This pattern generator always creates only one pattern from a given set of sequences. new Title : new Usage : my $db = TFBS::PatternGen::SimplePFM->new(%args); Function: the constructor for the TFBS::PatternGen::SimplePFM object Returns : a TFBS::PatternGen::SimplePFM obkect Args : This method takes named arguments; you must specify one of the following -seq_list # a reference to an array of strings # and/or Bio::Seq objects # or -seq_stream # A Bio::SeqIO object # or -seq_file # the name of the fasta file containing # all the sequences pattern all_patterns patternSet The three above methods are used fro the retrieval of patterns, and are common to all TFBS::PatternGen::* classes. Please see TFBS::PatternGen for details. perl v5.14.2 2008-01-24 TFBS::PatternGen::SimplePFM(3pm)
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