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  • MEME motif discovery

    Hi
    I have a question on meme motif discovery and strand of the sequence.
    When discovering motifs does MEME considers by default both forward and reverse strands of a given input sequence? I read in it in this https://groups.google.com/forum/#!to...te/1bTc2sDBqZU that MEME considers both forward and reverse strand when discovering motif (assuming they were taking about motif discovery and not pattern matching because I can see in pattern matching MAST does consider both strands).

    Also if the above is true then why does the MEME motif discovery manual gives an option for -revcomp.
    As described in under this option:
    when given -revcomp Consider both the given strand and the reverse complement strand when searching for motifs in a complementable alphabet (ie DNA).
    by default- Search for motifs of complementable alphabets on the given strand only.

    Please clarify.

  • #2
    As I understand it, MEME defaults to NOT finding motifs on opposite strands. Use the -revcomp parameter to have MEME search the reverse strand as well.
    Sam Hokin
    Computational Scientist, Carnegie and NCGR

    Comment


    • #3
      Thank you very much for your reply. Appreciate it.

      Comment

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