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usando shell em sequencias de DNA
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From: |
Graciela |
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Subject: |
usando shell em sequencias de DNA |
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Date: |
Sun, 14 Mar 2010 12:07:28 -0000 |
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User-agent: |
eGroups-EW/0.82 |
Trabalho com bioinformática e queria tirar uma dúvida com vocês
Tou com essas sequências de DNA, cada '>' representa uma sequência
Quero verificar apenas as três primeira letras de cada sequência, por shel
script tem como?
>fig|674.13.peg.56
gtgacgttaggtgacaatgttgttgttgcctcgggagccgttgtgacaaagagttttggt
agcaatgttgtcattggtggcaacccagcacgagtgttaaaagaaatcgagtaa
>fig|674.13.peg.57
atgtcaatatacccaactgcaccccaaggtgtgtcagttgatgccaatatgaaaatgata
aagcaaaagtttggccgcattgttggcccaactgatttctattggttttatgaacaggtt
agaaataaaggcccgtgggattataaacaaagtggcccgtttgaaaatttcggtaatttt
cattatggggcagttggttatgcaggtggcattccagaagaagttttgttaagagctgct
ggttgtgctcaaatgaaggcgggtacttcagctgatagctggggtagttgttggagcgat
caaccatttggagatgatccaaacgatcaacgttatatagcactaggtattgaatatgca
aaaagtaaaggctattag
>fig|674.13.peg.58
atgaacgtggataaagcgaaaaaacgcatattgaaacgagtacaaagaggtttcaaaggt
tatccgcaaatatctttagagtatttcgggaaaacgacagattttgctaccgaagtagtc
atcacttttgttcctgaagaaaacgctgaagcgcaaattcagagatttacgagtgataag
gatgttcgtgaagatgaagcaattcaatcggtattgttgaaaattattgagcgagccgac
gctgctacggttttagaaagccgagaagtatcagtttgttaa
>fig|674.13.peg.59
atgccagttgttggacaccttcaagtggtgacaaattgggatggtataccgatttgtatt
atagaaatgacgtctgtaaccaagcaaaaatacagcgaagtaacaccggagttcgcggct
ttagaaggtgagggtgacaagactttagcttggtggcgggaggcgcattggaacttcttc
tcaaaagagtgcgtagagttagaaatatcaccgtcggaagatatgttgctggttctagag
cagttcaaagtggtgtacaaataa
- usando shell em sequencias de DNA,
Graciela <=