Unconfigured Ad

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Tommi
    Junior Member
    • May 2014
    • 1

    #1

    Sequence Bias in Bisulphite Sequencing Mapped Reads

    Hello,

    I have created a post also in Biostars but the community did not have an answer to my post so I will try here. (here is the question in biostars https://www.biostars.org/p/259801/)

    I have performed with Bismark the M-Bias Plot and my reads looks as follow.




    as far as I am understanding the end of read 1 is showing a decrease in the CpG Methylation at the 3'end as well as the CHH total and CHG in the total call. The strange thing is the read 2 in which I can observe a drop Immediately after the first 5 nucleotides for all the type of of Methylation combination (CHH total, CHG total, CHH methylation etc..). How should I have to interpret this? To me it sounds like the read 2 look quite bad in therms of nucleotide composition, and only the CpG methylation bias is showing a good pattern. Does anyone has experienced a similar problem?

    In the bismark tutorial they clearly show that Read1 and Read2 have similar pattern (see here at page 16 https://www.bioinformatics.babraham....User_Guide.pdf )

    Any comment is really appreciated.
    Cheers

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, 11:13 AM
0 responses
19 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, Yesterday, 10:48 AM
0 responses
18 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 10-15-2026, 10:52 AM
0 responses
36 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 10-14-2026, 05:39 AM
0 responses
42 views
0 reactions
Last Post SEQadmin2  
Working...