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  • ahmetz
    Member
    • Jun 2011
    • 23

    #1

    SOLID data conversion to FASTQ

    I've been trying to convert my .csfasta and .qual files into a .fastq file for the last two days. I've found two different solid2fastq scripts (one from bfast, I don't remember the other one - might be a link from seqanswers). When I look at my .csfasta file, I see the I have 51 nucleotides for each read (they all start with T for the adapter) and there are 50 characters for each read in my .qual file. When I try to trim one base from the .csfasta files, both scripts trim one character from the quality scores too so my .fastq file has one missing quality score and downstream programs don't like this. What should I use for my conversion that would trim one base from .csfasta but not from .qual?
  • nilshomer
    Nils Homer
    • Nov 2008
    • 1283

    #2
    There is no quality for the adapter (it is assumed true), hence you should have one fewer quality score than the color sequence (with adapter).

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    • ahmetz
      Member
      • Jun 2011
      • 23

      #3
      I realize that. so there is no way to obtain a fastq file with equal numbers of sequence characters and quality score characters?

      Comment

      • jbrwn
        Member
        • Mar 2011
        • 37

        #4
        i don't mess around with trimming at all and use the solid2fastq script that comes with bfast. which downstream application can't read your fastq?

        Comment

        • ahmetz
          Member
          • Jun 2011
          • 23

          #5
          I'm trying to use FusionMap currently

          Comment

          • NGSGE
            Junior Member
            • May 2011
            • 4

            #6
            Why not remove the first "T" away by a simple python/perl script?

            Comment

            • ahmetz
              Member
              • Jun 2011
              • 23

              #7
              well, I don't know perl/python that well but i ended up editing a script and got what i needed that way in the last hour. so yay.

              Comment

              • yinxiaohe
                Junior Member
                • Nov 2010
                • 7

                #8
                ahmetz,did you successfully applied FusionMap on your Solid data? I want to find fusion genes with Solid RNA-seq data, too. And How does FusionMap aligner work, can it built colorspace index? Can you give me email address for more communication? My Email is [email protected],Thank you!

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