Unconfigured Ad

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • kuldeep
    Junior Member
    • Mar 2019
    • 1

    #1

    HTSeq output file

    Hello , I ran a bam file and a sam file through HTSeq for the read counts.
    The following the output of the BAM file with no numeric value for the read counts:
    Code:
    krishna@dntdaretouchit:/mnt/e/cannon$ head countread.text XF:Z:__ambiguous[ENSMUSG00000098178.1+ENSMUSG00000106106.2] XF:Z:__ambiguous[ENSMUSG00000098178.1+ENSMUSG00000106106.2] XF:Z:__alignment_not_unique XF:Z:__alignment_not_unique XF:Z:__alignment_not_unique XF:Z:__alignment_not_unique XF:Z:__no_feature XF:Z:__no_feature XF:Z:__alignment_not_unique XF:Z:__alignment_not_unique
    And this is the output format from the SAM file:
    Code:
    chr1    3206084 255     1S139M  =       3206084 -139    NTACAGTTAACCAACTTATACAGTTAACCAACTCCTACACTAGGTTCCTGAGCATTTCCTTAAACTTGCTAGTTCTGGTTTCCTGGCATGTGAGAGTAAGTCACATGGTAGGAGGCTGCCTTTCTATCJJJFJJFJJJAJFJJJFJFFJFJJJJJJJJJJJJJJJJJJJJJJJFJJJJJJJJFJJJJJA<<JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJFJJJJJJJFFJJJJJFJFJJJJJJJJFJJJJJJJJJJJJJJAFAAA     NH:i:1  HI:i:1  AS:i:276        nM:i:0  XF:Z:ENSMUSG00000051951.5
    GWNJ-0965:181:GW180227920:7:2124:9881:65265     163     chr1    3206084 255     139M1S  =       3206084 139     TACAGTTAACCAACTTATACAGTTAACCAACTCCTACACTAGGTTCCTGAGCATTTCCTTAAACTTGCTAGTTCTGGTTTCCTGGCATGTGAGAGTAAGTCACATGGTAGGAGGCTGCCTTTCTATCATTCAATTTTAGN
    I am having hard time to interpret these file for the count numbers. The output from the BAM file looks absurd.
    Last edited by GenoMax; 03-25-2019, 08:16 AM.
  • luminasapientiae
    Junior Member
    • Sep 2017
    • 5

    #2
    I think we need more information.
    What is the design of your study? why HTSeq?
    I never worked with HTSeq before but i have experience with edgeR, DESeq2 and NOISeq, but i can be more useful if i have more information about your design.

    The counts can be extract in R with Rsamtools (look for index function) or in terminal by samtools idsxstats [bam] > [export_to_file]

    Comment

    • GenoMax
      Senior Member
      • Feb 2008
      • 7142

      #3
      Originally posted by kuldeep View Post
      And this is the output format from the SAM file:
      Code:
      chr1    3206084 255     1S139M  =       3206084 -139    NTACAGTTAACCAACTTATACAGTTAACCAACTCCTACACTAGGTTCCTGAGCATTTCCTTAAACTTGCTAGTTCTGGTTTCCTGGCATGTGAGAGTAAGTCACATGGTAGGAGGCTGCCTTTCTATCJJJFJJFJJJAJFJJJFJFFJFJJJJJJJJJJJJJJJJJJJJJJJFJJJJJJJJFJJJJJA<<JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJFJJJJJJJFFJJJJJFJFJJJJJJJJFJJJJJJJJJJJJJJAFAAA     NH:i:1  HI:i:1  AS:i:276        nM:i:0  XF:Z:ENSMUSG00000051951.5
      GWNJ-0965:181:GW180227920:7:2124:9881:65265     163     chr1    3206084 255     139M1S  =       3206084 139     TACAGTTAACCAACTTATACAGTTAACCAACTCCTACACTAGGTTCCTGAGCATTTCCTTAAACTTGCTAGTTCTGGTTTCCTGGCATGTGAGAGTAAGTCACATGGTAGGAGGCTGCCTTTCTATCATTCAATTTTAGN
      It looks like you copy/pasted partial lines in this example. Does your example really start with "chr 1". If so you may have a corrupt SAM file.

      Comment

      Latest Articles

      Collapse

      • SEQadmin2
        Multiomic Liquid Biopsy: What DNA/RNA Panels Reveal That DNA Alone Can’t
        by SEQadmin2



        Tumors contain complex mixtures of cell populations that evolve in response to treatment and host-specific factors. Tissue biopsies provide only static snapshots of a tumor’s state. But what if we could follow that evolution over time using a minimally invasive technique?

        Liquid biopsies can detect tumor-derived material circulating in the bloodstream, providing a way to study treatment response, detect emerging resistance, and discover new biomarkers. Circulating
        ...
        10-14-2026, 09:55 AM
      • SEQadmin2
        New Genomics Technologies Take Aim at Long-Standing Limits
        by SEQadmin2


        Researchers using sequencing and genomics tools often have to make trade-offs. They can choose between speed or scale, short reads or long-range information, or targeted panels or a view of the whole transcriptome. New technologies that have been released this year are built to address those tough choices.

        We asked six companies the same four questions to learn about their latest products. The new technologies bring a lot to the table, including rethinking sequencing
        ...
        09-28-2026, 10:25 AM

      ad_right_rmr

      Collapse

      News

      Collapse

      Topics Statistics Last Post
      Started by SEQadmin2, Yesterday, 10:52 AM
      0 responses
      11 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 10-14-2026, 05:39 AM
      0 responses
      19 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 10-13-2026, 09:56 AM
      0 responses
      17 views
      0 reactions
      Last Post SEQadmin2  
      Started by SEQadmin2, 10-09-2026, 11:14 AM
      0 responses
      27 views
      0 reactions
      Last Post SEQadmin2  
      Working...