Seqanswers Leaderboard Ad

Collapse

Announcement

Collapse
No announcement yet.
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • 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
    +

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

    Comment


    • #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

      • seqadmin
        Recent Advances in Sequencing Analysis Tools
        by seqadmin


        The sequencing world is rapidly changing due to declining costs, enhanced accuracies, and the advent of newer, cutting-edge instruments. Equally important to these developments are improvements in sequencing analysis, a process that converts vast amounts of raw data into a comprehensible and meaningful form. This complex task requires expertise and the right analysis tools. In this article, we highlight the progress and innovation in sequencing analysis by reviewing several of the...
        05-06-2024, 07:48 AM
      • seqadmin
        Essential Discoveries and Tools in Epitranscriptomics
        by seqadmin




        The field of epigenetics has traditionally concentrated more on DNA and how changes like methylation and phosphorylation of histones impact gene expression and regulation. However, our increased understanding of RNA modifications and their importance in cellular processes has led to a rise in epitranscriptomics research. “Epitranscriptomics brings together the concepts of epigenetics and gene expression,” explained Adrien Leger, PhD, Principal Research Scientist...
        04-22-2024, 07:01 AM

      ad_right_rmr

      Collapse

      News

      Collapse

      Topics Statistics Last Post
      Started by seqadmin, 05-07-2024, 06:57 AM
      0 responses
      12 views
      0 likes
      Last Post seqadmin  
      Started by seqadmin, 05-06-2024, 07:17 AM
      0 responses
      16 views
      0 likes
      Last Post seqadmin  
      Started by seqadmin, 05-02-2024, 08:06 AM
      0 responses
      21 views
      0 likes
      Last Post seqadmin  
      Started by seqadmin, 04-30-2024, 12:17 PM
      0 responses
      24 views
      0 likes
      Last Post seqadmin  
      Working...
      X