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  • bioenvisage
    Member
    • Oct 2009
    • 40

    #1

    1x assembly

    Hi,any one have experience of denovo asembly of solexa reads having 1x coverege by using velvet.
  • Torst
    Senior Member
    • Apr 2008
    • 275

    #2
    Originally posted by bioenvisage View Post
    Hi,any one have experience of denovo asembly of solexa reads having 1x coverege by using velvet.
    It is not possible to assemble 1x coverage data, because no read will overlap any other read.

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    • peromhc
      Senior Member
      • Sep 2009
      • 108

      #3
      and to add to Torst, most de novo assemblers will have significant problems until you sequence to between 10X and 20X coverage at a minimum.

      Comment

      • 0Gen
        Junior Member
        • Mar 2010
        • 8

        #4
        Some reads will be overlapping.

        About one third locations have 0x coverage, one third 1x, fewer 2x, even fewer 3x ...

        Comment

        • Torst
          Senior Member
          • Apr 2008
          • 275

          #5
          Originally posted by 0Gen View Post
          Some reads will be overlapping. About one third locations have 0x coverage, one third 1x, fewer 2x, even fewer 3x ...
          This is simply not enough coverage. You might be able to detect some SNPs, and assembled a few short regions, but that's it. Sorry.

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