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Filtering contigs/chromosomes from a multi-fasta file

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A colleague needed to remove some individual fastas from a multi-fasta file. Googling didn’t reveal a canned way to do it so I hacked up this script.

8.29.12 – As Jason Gallant pointed out, if your fasta is very small you don’t need to index your fasta file. Just  use the simple biopython code he mentions in the comments.


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