Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • francesconea
    Junior Member
    • Apr 2011
    • 5

    strange bwa/samtools behaviour (?)

    Hello everyone
    First of all, I'd like to thank you for this super-useful community everyone's contributing to build up. It's a kind of next-gen sequencing for me
    Now, coming to my question:
    I'm quite new in next-gen sequencing and I'm working with Illumina data (paired-end, 76bp long reads, whole exome) and I cannot have any of my aligned bam/sam files with header included. That is, I have all the pretty @SQ lines and @PG line at the end of the header. What I can't gain is the @HD/tVN/SO line at the very beginning of the header.

    In addiction, if i try to do
    bwa aln - bwa sampe - samtools view - samtools sort in a separate way, when I try to give a look to my new-beautiful-bam-file's header I'll receive always this message:

    samtools view -H prova.bam <- my command
    [bam_header_read] EOF marker is absent.

    while, when I sort it, I get this other one:
    samtools sort prova.bam prova_sorted <- my command

    [bam_header_read] EOF marker is absent. The input is probably truncated.

    All of this doesn't happen at all if I do that in a piped way...even if the @HD/tVN:/tSO line is still missing

    Any ideas would be particularly appreciated
    Last edited by francesconea; 04-12-2011, 05:16 AM. Reason: wanted to better check posting options
    wherever you go, whatever you do, always bring a bioinformatic with you

Latest Articles

Collapse

  • SEQadmin2
    Proteomic Platforms: How to Choose the Right Analytical Strategy to Improve Detection and Clinical Applications
    by SEQadmin2


    Proteomics platforms are evolving rapidly, with advances in mass spectrometry and affinity-based approaches expanding what researchers can detect and at what scale. As the field moves toward deeper proteome coverage and clinical applications, scientists face an increasingly complex landscape of tools. This article will explore how researchers are navigating these choices to find the right platform for their work.

    The systematic characterization of the human proteome has
    ...
    07-20-2026, 11:48 AM
  • SEQadmin2
    Advanced Sequencing Platforms Tackle Neuroscience’s Toughest Genomics Problems
    by SEQadmin2



    Genomics studies in neuroscience face a special challenge due to the brain’s complexity and scarcity of samples. Mapping changes in cell type and state using conventional next-generation sequencing methods remains challenging. Advances in technologies like single-cell sequencing, spatial transcriptomics, and long-read sequencing have opened the door to deeper studies of the brain and diseases like Alzheimer’s, amyotrophic lateral sclerosis (ALS), and schizophrenia.
    ...
    07-09-2026, 11:10 AM
  • SEQadmin2
    Cancer Drug Resistance: The Lingering Barrier to Rising Survival
    by SEQadmin2



    Cancer survival rates have significantly increased in the last few decades in the United States, reaching a combined 70% 5-year survival rate by 2021. Behind this number, there are years of research to find new therapies, drug targets, and early detection methods. But there is one core challenge that keeps slowing down these advances, and it’s about drug resistance.

    There is no single reason why many patients don’t respond to treatment as expected. Cancer is...
    07-08-2026, 05:17 AM

ad_right_rmr

Collapse

News

Collapse

Topics Statistics Last Post
Started by SEQadmin2, Today, 11:41 AM
0 responses
9 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 07-20-2026, 11:10 AM
0 responses
22 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 07-13-2026, 10:26 AM
0 responses
35 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 07-09-2026, 10:04 AM
0 responses
45 views
0 reactions
Last Post SEQadmin2  
Working...