Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • JJZ
    Junior Member
    • Aug 2014
    • 4

    error running STAR

    I am using STAR to map my paired end rna seq data. I keep running into the following error msg.
    EXITING because of FATAL ERROR in input reads: unknown file format: the read ID should start with @ or >
    This was my command line:
    -bash-3.2$ /pathToStarDir/ STAR --genomeDir /pathToGenome/ --readFilesCommand zcat --readFilesIn /pathToFile/587352_1_1.fastq.gz pathToFile/587352_1_2.fastq.gz --runThreadN 3

    When I zless my .fastq.gz file to check the format of the file, the first few lines looks like this:
    @HWI-ST152R_0409:5:1:1451:1993#NAGCTT/1
    GCTGTATCTCTCAGGATTATCACTGATCACACATCCAACCAGTGCCAGCCAAAAGGATGCCCTGAGGCAAAGGGT
    +HWI-ST152R_0409:5:1:1451:1993#NAGCTT/1
    bbd_dee`dcdfefffffeffffffaeeeefdfffffefffeeefeffffffefcffcefffeffadfedbbTcU
    @HWI-ST152R_0409:5:1:1587:1992#TAGCTT/1
    GGCCATCTGATCTATAAATGCGGTGGCATCGACAAAAGAACCATTGAAAAATTTGAGAAGGAGGCTGCTGAGATG
    +HWI-ST152R_0409:5:1:1587:1992#TAGCTT/1
    gecgggggggffgdggfgggfffgddedfbecbcdadfadeg^eaedda^g`cdbdggdgdV^a`X`_``W]V]c

    Has anyone ran into similar problems before? Is it a file problem or there was mistakes in my command ?

    Thanks for the help in advance.

    J.Z
  • GenoMax
    Senior Member
    • Feb 2008
    • 7142

    #2
    Can you try Brian's repair.sh tool to see if you can fix problems with your fastq files: http://seqanswers.com/forums/showpos...0&postcount=45 I am not sure if it will catch malformed ID headers.

    Alternatively fastqValidator can be used to see if you do have a problem with formatting: http://genome.sph.umich.edu/wiki/FastQValidator

    Comment

    • Brian Bushnell
      Super Moderator
      • Jan 2014
      • 2709

      #3
      I don't see a problem with the first 8 lines, at least. And yes, repair.sh requires correctly-formatted fastq headers; it's only for fixing broken pair ordering. I'm not familiar with how STAR deals with gzipped files, but perhaps you could try decompressing it first?

      Comment

      Latest Articles

      Collapse

      • SEQadmin2
        Nine Things a Sample Prep Scientist Thinks About Before Sequencing
        by SEQadmin2


        I’m not a sequencing expert. I’m a purification scientist who uses NGS to evaluate workflows my group develops. With this perspective, we think about the sample first and the NGS workflow second. The sequencer is an exceptionally honest reporter, but it can only report on what you give it, so whether you get clean, interpretable data from an NGS workflow is largely determined before you begin.


        Here are nine questions we think about, in roughly the order they matter, before...
        06-18-2026, 07:11 AM
      • SEQadmin2
        From Collection to Sequencing: Why Sample Preparation and Preservation Define Sequencing Data
        by SEQadmin2


        Data variability is still an issue in sequencing technologies despite the advances in reproducibility and accuracy of these platforms. But the problem does not originate in the sequencing itself, but in the previous steps, before the sample reaches the sequencer.


        The first step is collection, followed by preservation and sample preparation for analysis. Most scientists overlook those steps, but not being careful might just be skewing the experiment’s results.
        ...
        06-02-2026, 10:05 AM

      ad_right_rmr

      Collapse

      News

      Collapse

      Topics Statistics Last Post
      Started by SEQadmin2, 06-17-2026, 06:09 AM
      0 responses
      33 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 06-09-2026, 11:58 AM
      0 responses
      97 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 06-05-2026, 10:09 AM
      0 responses
      117 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 06-04-2026, 08:59 AM
      0 responses
      110 views
      0 reactions
      Last Post SEQadmin2  
      Working...