Unconfigured Ad

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • gevielr
    Member
    • Oct 2013
    • 14

    #1

    CLC paired read orientation- max. and min. read distance

    When importing data into CLC Genomics Workbench for a de novo assembly (100 bp paired end reads), you are required to input the read orientation minimum and maximum distance between paired reads. How is this calculated?

    Initially, I thought the range was calculated by the total size of the fragment. So, if my inserts were 200-220 bp + 120 bp for adaptors, the size of the fragment would be 320-340 bp. The reads being 100 bp on each side, the distance between both would be a minimum distance of 120 bp. However, my assembly using this logic, while OK, had the majority of the paired reads "broken" in the analysis.

    After asking around, I was told that the distance shouldn't include the adaptors. So that the minimum distance between 2 reads would be around 0 or an insert size of 200-220 bp?

    When I tried this though, the majority of the paired reads were broken in the analysis, and my contigs were generally smaller.
  • gevielr
    Member
    • Oct 2013
    • 14

    #2
    I should note that I found this in the manual:

    "...the paired distance measure that is used throughout the CLC Genomics Workbench is always including the full read sequence. For paired-end libraries it means from the beginning of the forward read to the beginning of the reverse read."

    I thought this would mean from the beginning of the transcription of both reads... so 200 bp minimum distance? However, this would not make sense with what I have so far. Could it be possible that they mean from the beginning of the forward reads to the end of the reverse read... so 100 bp minimum distance for a 200 bp insert?

    And then how is maximum distance calculated?

    Comment

    Latest Articles

    Collapse

    • 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, detection...
      Today, 06:46 AM
    • 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

    ad_right_rmr

    Collapse

    News

    Collapse

    Topics Statistics Last Post
    Started by SEQadmin2, 10-28-2026, 09:57 AM
    0 responses
    24 views
    0 reactions
    Last Post SEQadmin2  
    Started by SEQadmin2, 10-28-2026, 09:51 AM
    0 responses
    15 views
    0 reactions
    Last Post SEQadmin2  
    Started by SEQadmin2, 10-22-2026, 11:13 AM
    0 responses
    68 views
    0 reactions
    Last Post SEQadmin2  
    Started by SEQadmin2, 10-22-2026, 10:48 AM
    0 responses
    48 views
    0 reactions
    Last Post SEQadmin2  
    Working...