Seqanswers Leaderboard Ad

Collapse

Announcement

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

  • Cufflinks non-model organism, issues with -b, and false concatenation of genes

    Hello,
    I have been working with the "tuxedo" package for a little while now, and have started getting the nice results that I want, but I still have a few nagging issues.

    One is that when I use the -b option, for multi-read correction in cuffdiff, I get a segmentation fault at differing stages of the run, and thus no result. If I do not use this option, I basically get no results, and the gene_exp.diff is basically full of NOTEST and LOWDATA entries.

    This is only an issue for the newest (and unfortunately much better) annotation and assembly, as when I run the package with the older files, it works generally fine (also with the -b option).

    Is there anything in the genome fasta or bowtie mapping files that I should look for in order to fix this problem? If anyone wants to take a look, I would be more than happy to send the files...

    Another issue I have is that at some point some clearly distinct genes are merged into one cufflinks transcript, so that in the gene_exp.diff file, an entry in the "gene" column would look like: Nasvi2EG000144,Nasvi2EG000145,Nasvi2EG000147,Nasvi2EG000149,Nasvi2EG000151 It is clear to me that I am losing quite some differential expression information due to this issue, and was wondering if there was a way to avoid it....

  • #2
    Are you using the 2.0.1 or 2.0.0 version? These issues are supposed to be fixed in that latest version. Another thing, -b is not multi-read-correction, it is frag-bias-correct.

    Comment


    • #3
      Originally posted by glados View Post
      Are you using the 2.0.1 or 2.0.0 version? These issues are supposed to be fixed in that latest version. Another thing, -b is not multi-read-correction, it is frag-bias-correct.
      This was in 2.0.1, as well as in earlier versions.
      Of course you are right about -b, I thought I had fixed it, but at least I got it right in the tags

      Comment


      • #4
        Ok. Then I don't know. Hopefully someone else do.

        Comment

        Latest Articles

        Collapse

        • seqadmin
          Addressing Off-Target Effects in CRISPR Technologies
          by seqadmin






          The first FDA-approved CRISPR-based therapy marked the transition of therapeutic gene editing from a dream to reality1. CRISPR technologies have streamlined gene editing, and CRISPR screens have become an important approach for identifying genes involved in disease processes2. This technique introduces targeted mutations across numerous genes, enabling large-scale identification of gene functions, interactions, and pathways3. Identifying the full range...
          08-27-2024, 04:44 AM
        • seqadmin
          Selecting and Optimizing mRNA Library Preparations
          by seqadmin



          Sequencing mRNA provides a snapshot of cellular activity, allowing researchers to study the dynamics of cellular processes, compare gene expression across different tissue types, and gain insights into the mechanisms of complex diseases. “mRNA’s central role in the dogma of molecular biology makes it a logical and relevant focus for transcriptomic studies,” stated Sebastian Aguilar Pierlé, Ph.D., Application Development Lead at Inorevia. “One of the major hurdles for...
          08-07-2024, 12:11 PM

        ad_right_rmr

        Collapse

        News

        Collapse

        Topics Statistics Last Post
        Started by seqadmin, 08-27-2024, 04:40 AM
        0 responses
        16 views
        0 likes
        Last Post seqadmin  
        Started by seqadmin, 08-22-2024, 05:00 AM
        0 responses
        293 views
        0 likes
        Last Post seqadmin  
        Started by seqadmin, 08-21-2024, 10:49 AM
        0 responses
        135 views
        0 likes
        Last Post seqadmin  
        Started by seqadmin, 08-19-2024, 05:12 AM
        0 responses
        124 views
        0 likes
        Last Post seqadmin  
        Working...
        X