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An interesting question by Rnaer from Biostar:

I want to find unique dna/protein sequences of a given length (30nt, for example) that does not match to any region of the C.elegans genome. Is there any tool to do that?

hello_there_andy
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    Well, it is a really interesting question :-) Unfortunately, I can't predict a long survival for it. :-( – peterh Sep 20 '15 at 02:43

1 Answers1

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NCBI provides an easy way to search DNA/Amino acid sequence databases that DO NOT match to a target organisms genome, yet match to other databases and sources.

Just use the exclude field in NCBI's BLASTn

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Hope this was useful.

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hello_there_andy
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