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  • wlangdon
    Member
    • Nov 2012
    • 15

    #1

    paired end nextgen DNA sequences and BLAST

    Is it possible to use ncbi BLAST on paired end sequences?
    I am using BWA or Bowtie2GP at present but it would be nice to
    compare against a "gold standard", which I thought would be BLAST.
    However I cant find anything about paired end sequences and blast.
    It would be nice to take a few sequences and check the new tools
    come up with similar answers.

    Just wanted to double check I was not missing something obvious,

    Bill
  • jimmybee
    Senior Member
    • Sep 2010
    • 119

    #2
    BLAST is a local aligner and primarily a database searching tool, rather than an a short-read alignment tool.

    BWA and Bowtie would probably be the "gold standard" in this area

    Comment

    • winsettz
      Member
      • Sep 2012
      • 91

      #3
      bowtie was intended for the early NGS platforms that had short reads. Bowtie2 is intended for the newer NGS platforms with somewhat longer reads (like the MiSeq's ~150 nts).

      One could also use mummer and mummerplot, but I'm not sure if it's an exact solution.

      Comment

      • wlangdon
        Member
        • Nov 2012
        • 15

        #4
        Dear jimmybee and winsettz,
        Thank you for your helpful replies.
        I could not find a switch or option on BLAST for paired end sequences, so
        I guess I am right in assuming it cannot deal directly with them.
        Instead I have taken a small number of Bowtie2GP matches and double checked them
        with smith_waterman. (Of course this does not help where a match should have been
        found but was not reported.)
        Thanks again
        Bill

        Comment

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