Seqanswers Leaderboard Ad

Collapse

Announcement

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

  • Aborted BWA run - what is wrong?

    I hit a strange error when attempting alignment of my Illumina readset to individual genes. I extracted from hg19 the entire genes of FOXP2 (chr7) and COL1A1 (chr17) as fasta files, then did indexing:
    Code:
    bwa index -a is -p hFOXP2gene /media/Ext2TB-A/RefSeq/Human/hg19/hFOXP2gene.fa
    bwa index -a is -p hCOL1A1gene /media/Ext2TB-A/RefSeq/Huma/hg1/hCOL1A1gene.fa
    which completed without problems. Then I tried to do alignment:
    Code:
    bwa mem -p -t15 /media/Ext2TB-A/RefSeq/Human/hg19/bwadb/hFOXP2gene /home/yaximik/Desktop/Ext2TB-A/Data/MiSeq/SC/AdQ30/SC_050813peOrd.fastq > SC_050813peOrd_hFOXP2gene-pe.sam && samtools view -bS -@15 SC_050813peOrd_hFOXP2gene-pe.sam -o SC_050813peOrd_hFOXP2gene-pe.bam && samtools sort -@15 -m 20G SC_050813peOrd_hFOXP2gene-pe.bam SC_050813peOrd_hFOXP2gene-pe_sorted && samtools index SC_050813peOrd_hFOXP2gene-pe_sorted.bam &&  samtools idxstats SC_050813peOrd_hFOXP2gene-pe_sorted.bam > SC_050813peOrd_hFOXP2gene-peStats.txt
    However I got the following to stout:
    Code:
    [main] Version: 0.7.3a-r367
    [main] CMD: bwa mem -p -t15 /media/Ext2TB-A/RefSeq/Human/hg19/bwadb/hFOXP2gene /home/yaximik/Desktop/Ext2TB-A/Data/MiSeq/SC/AdQ30/SC_050813peOrd.fastq
    [main] Real time: 0.001 sec; CPU: 0.001 sec
    [samopen] SAM header is present: 1 sequences.
    [sam_read1] reference 'SN:hFOXP2        LN:280776
    ' is recognized as '*'.
    [main_samview] truncated file.
    Exactly the same happened for COL1A1gene.
    The same set of commands completes just fine when the entire chr7 is used as reference and there were quite a lot of matches to some regions of the FOXP2 gene.
    What could be the problem?

  • #2
    Aborted BWA run - what is wrong?

    Have you tried running your commands one at a time to see at which stage the problem arises?

    Comment

    Latest Articles

    Collapse

    • seqadmin
      Understanding Genetic Influence on Infectious Disease
      by seqadmin




      During the COVID-19 pandemic, scientists observed that while some individuals experienced severe illness when infected with SARS-CoV-2, others were barely affected. These disparities left researchers and clinicians wondering what causes the wide variations in response to viral infections and what role genetics plays.

      Jean-Laurent Casanova, M.D., Ph.D., Professor at Rockefeller University, is a leading expert in this crossover between genetics and infectious...
      09-09-2024, 10:59 AM
    • 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

    ad_right_rmr

    Collapse

    News

    Collapse

    Topics Statistics Last Post
    Started by seqadmin, Today, 01:02 PM
    0 responses
    8 views
    0 likes
    Last Post seqadmin  
    Started by seqadmin, Yesterday, 06:39 AM
    0 responses
    10 views
    0 likes
    Last Post seqadmin  
    Started by seqadmin, 09-11-2024, 02:44 PM
    0 responses
    13 views
    0 likes
    Last Post seqadmin  
    Started by seqadmin, 09-06-2024, 08:02 AM
    0 responses
    148 views
    0 likes
    Last Post seqadmin  
    Working...
    X