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  • RNAseqer
    Member
    • Sep 2010
    • 22

    #16
    I've heard that trimming is not as efficient as alignment in the pipeline and then building up or down from there.

    Comment

    • mmartin
      Member
      • Aug 2009
      • 73

      #17
      Could you elaborate? What do you mean by 'efficient'?

      Comment

      • snetmcom
        Senior Member
        • Oct 2008
        • 159

        #18
        i think the small rna pipeline will use the adapter sequence to more efficiently trim reads. It's better to run them as 35bp than to trim them and try and map.

        Comment

        • mmartin
          Member
          • Aug 2009
          • 73

          #19
          cutadapt and most trimmers I know do use the adapter sequence to trim the reads (they align the adapter sequence to the end of the read). The alternative is to unconditionally remove the last x bases (or colors) of each read. I do not consider that to be adapter removal, it is way too inaccurate.

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