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  • av_d
    Member
    • Sep 2009
    • 12

    #1

    dwgsim read orientation

    Hi everyone,

    I want to use dwgsim to simulate solid reads for testing SOLiD denovo2 pipeline(which needs a F3 and another R3 or F5). But I'm little confused with the read orientation of "out.bfast.fq".
    Eg, first two reads from my out.bfast.fq is here,

    @I_532_32_1_1_0:0:0_0:0:0_0
    A2133112101103112111031211
    +
    1111111111111111111111111
    @I_532_32_1_1_0:0:0_0:0:0_0
    A3130100331131313012113102
    +
    1111111111111111111111111

    According to dwgsim wiki, the 4th the and 5th field of the read name describing the strand
    4. strand end 1 (0 - forward, 1 - reverse)
    5. strand end 2 (0 - forward, 1 - reverse)

    so my question id how to separate these reads to corresponding F3 and R3(or F5) files ?
    Is that first one is F3 and second is R3 ?
  • nilshomer
    Nils Homer
    • Nov 2008
    • 1283

    #2
    End one has a position of 532, end two has a position of 32, both are on the reverse strand. In the latest GIT, you will see the "-S" option lets you control the strand relationship between the two. Someone correct me if I am wrong, but F3/R3 (mate pairs) are on the same strand with R3 is 5' of F3 (see http://www.umassmed.edu/uploadedFile...s/Overview.pdf). For F3/F5 (paired ends), they should be on opposite strands with F3 having a lower co-ordinate (see http://sourceforge.net/mailarchive/m...sg_id=27692286). Based on that info, you should be able to figure out from the read names which is which, as well as what settings you used. Maybe we should label the "-S" option with "mate pair mode" or "paired end mode"?

    Comment

    • nilshomer
      Nils Homer
      • Nov 2008
      • 1283

      #3
      I have update the documentation: https://sourceforge.net/apps/mediawi...ome_Simulation

      What do you think?

      Comment

      • av_d
        Member
        • Sep 2009
        • 12

        #4
        thanks a lot, the wiki page is really helpful.

        Comment

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