Unconfigured Ad

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • bwc22
    Junior Member
    • Feb 2016
    • 1

    #1

    Deleting sequence lacking quality scores from FASTQ?

    Hello,

    I have a fastq with a sequence that's missing quality scores. See FASTQ Groomer error message below. How do I remove this sequence or otherwise fix this so that I can use this file in Galaxy?

    Thanks!

    Invalid FASTQ file: quality score length (0) does not match sequence length (44)'.
    The last valid FASTQ read had an identifier of '@157361978'.
    The error in your file occurs between lines '2625917' and '2625921', which corresponds to byte-offsets '131488615' and '131488674', and contains the text (59 of 59 bytes shown):

    @157362855
    ATGGAATTGGTAAAGCCATTGTAGAAATATTCTGTAAAAGTGGG
    +
  • felvis56
    Member
    • Dec 2012
    • 11

    #2
    I've used TrimGalore! And Prinseq for quality trimming, although not sure how it will handle reads with empty ph red scores.

    Comment

    • Brian Bushnell
      Super Moderator
      • Jan 2014
      • 2709

      #3
      The problem in this case is not your tool, but that you have a corrupt (probably truncated) fastq file. Rather than find a tool that ignores the problem, you should re-download the file to get a non-corrupt copy. Do not use this file in Galaxy or anything else, because your results will be wrong.

      Comment

      Latest Articles

      Collapse

      • kinpict.com
        Reply to 16S/ITS Profiling vs. Shotgun Metagenomics: What Changes in Your Workflow?
        by kinpict.com
        The part about this topic feels surprisingly grounded, and the details on the page is the bit that made me slow down. I’d keep <a href="https://kinpict.com/">ai family photo generator</a> bookmarked for later.
        Today, 06:37 PM
      • SEQadmin2
        16S/ITS Profiling vs. Shotgun Metagenomics: What Changes in Your Workflow?
        by SEQadmin2





        NGS has revolutionized clinical microbiology by offering new ways to identify and surveil pathogens without prior knowledge of the target. One popular approach is 16S rRNA and ITS amplicon sequencing, which targets specific microbial markers. But studies are increasingly incorporating shotgun metagenomics, a technique that sequences all DNA from a sample without targeting specific microbial markers. This approach allows more detailed taxonomic classification,...
        10-30-2026, 06:46 AM

      ad_right_rmr

      Collapse

      News

      Collapse

      Topics Statistics Last Post
      Started by SEQadmin2, 11-12-2026, 07:59 AM
      0 responses
      26 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 11-05-2026, 09:25 AM
      0 responses
      35 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 11-03-2026, 11:54 AM
      2 responses
      56 views
      0 reactions
      Last Post kinpict.com  
      Started by SEQadmin2, 10-28-2026, 09:57 AM
      0 responses
      175 views
      0 reactions
      Last Post SEQadmin2  
      Working...