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  • m_elena_bioinfo
    Member
    • Oct 2009
    • 99
    #1

    output samtools.pl

    Dear users,
    I used BFAST program to generate a file .sam (using microRNA reads from SOLiD ABI).
    I run SAMTOOLS to analyse SNPs and mutations, and I generated at the end two output files:
    a pileup file and a file .snps (by samtools.pl varFilter).

    This is an example of my file .snps:

    g hsa-let-7a-3 61 * */+A 73 73 40 81 * +A 79 2 0 0 0
    g hsa-let-7a-3 63 * */-C 133 133 45 79 * -C 76 1 2 3 1
    g hsa-let-7a-3 64 * */-T 165 165 44 78 * -T 77 1 0 0 0
    g hsa-let-7a-3 68 * */-T 385 385 40 53 * -T 52 1 0 0 0
    g hsa-let-7a-3 70 * */+A 78 78 35 43 * +A 42 1 0 0 0
    D hsa-let-7b 22 * */+A 895 895 22 1717 * +A 1652 36 29 7 37
    D hsa-let-7b 24 * */+TC 14761 14761 23 1728 * +TC 1573 51 104 7 4
    D hsa-let-7b 25 * +TA/+CTA 17955 37444 23 1730 +TA +CTA 32 17 1681 35 18
    D hsa-let-7b 26 * +A/+TA 21497 46739 23 1732 +A +TA 393 162 1177 40 29
    D hsa-let-7b 27 * +A/* 31077 31077 23 1733 +A * 6 1651 76 4 5
    D hsa-let-7b 28 T Y 228 228 23 1736 ,,.+1C,,$C.C...+4ATTC.+4ATTC*.+4ATTCC,.+1C.,...+4ATTCC..+1CCC.+1CC.+4ATTC
    .+1C.+4ATTC.+1C..+4ATTC.+4ATTC.+4ATTCC.+1C*.+4ATTCC.+1CC.+4ATTCC.+1C...+1CCC.+1C.+4ATTCC..+1CC.+1C.+1C.+1C.+1CC.+1C.+4ATTCC.+1C.+1C...+4ATTC.+1C.C..+1C.C
    ..+1C..+1C..+1C.....+4ATTCC.+4ATTCC..+4ATTC..C.+4ATTC.C.+1C.+4ATTCC.+1C.+4ATTCC...+4ATTC.C.+4ATTC.+1C......C.+4ATTC..+1C.+4ATTC.+1C.C.+4ATTC.+1CCCC.+1C.+
    1C.+4ATTC.+1C.+4ATTC.+1C.+4ATTC.+4ATTC.+4ATTC.+1C.+1CC.+4ATTC.+1CCC.+1CC.+1C.+1CC.C.+1CC.+1C.+1C.+4ATTC.+4ATTC..+1C.+1C.+1CCC.+4ATTCC.+1CC.+1C...C.+1C.+1
    CC.+4ATTC..+1C.+1C.+1C.+1C*.+4ATTC..+4ATTC.+1C.+1C.+1C.+1C.+1CC.CC.+4ATTC.+1C.+1CC..+1C..+1C.+1C..+1C.+4ATTC.+1C.+1C.+1C...+1C...+1C.A.+4ATTC.+4ATTC.-1C.
    +3CGC.+2TC.+1C.+1CC.+1C.+4ATTC..+4ATTC.+4ATTCC..+1C.+1C.C.CC.+4ATTCC.+4ATTC.+1C.+1C.+4ATTC.+1CC.C.+1C.+4ATTC.+4ATTC.+4ATTC.+1CC.+4ATTCC.+4ATTC.+4ATTC.+1C
    .+1CCC.+1C.+1C.+1C.+1C.+1CC.+4ATTC.+1CCC.+1CCCC.+1C.+1C.+4ATTC.+1CC.+1C..+4ATTC.CC.+1C.+4ATTC.+1C.CC.+1C.C.+1C.+1C.+1CC.+1CC.+1C.+1C.+1C.+4ATTC.+4ATTC.+1
    C.+4ATTCC.+1C.+1C.+1C.+1C.+1CC.+5CATTC.+4ATTC.+4ATTCCC.+1C.+1C.+1CC..C.+4ATTC.+1C..+1C..+1C.+1CC.+1C*.+1CCC.+4ATTC.+4ATTC..+1C.+1C..+1C..C.+4ATTC.+4ATTC.
    +4ATTC.C.+4ATTC.+1CC..+1C.+1CC.+4ATTC.+1C.+1C.CCC.+1C.+1C.+4ATTC.+4ATTC.+1C.+1CC..-1CC.+1C.+1C.+1C..+1C.+1C..+1C*...+1CC.+1C...+4ATTC.+1C.+1CC..+4ATTC..+
    1C...+1CC.+1C.+1C..C.+1C.-2CACC..C..+4ATTCA.+1C..+1C.+4ATTC..+1C.+1C..+1CC.+4ATTC.+4ATTC.+1C.+1C..+6GTATTCC.C.+4ATTC.+1C..+1C.+4ATTC.+4ATTC.+4ATTCC.

    But I don't know how I can read this file. What correspond to each column?
    How or where can I find the number of reads (the number of count of miRNA in the alignment)?

    Thanx a lot!
    Bye
    M.Elena
    Tags: None
    • nilshomer
      Nils Homer
      • Nov 2008
      • 1283
      #2
      Originally posted by m_elena_bioinfo View Post
      Dear users,
      I used BFAST program to generate a file .sam (using microRNA reads from SOLiD ABI).
      I run SAMTOOLS to analyse SNPs and mutations, and I generated at the end two output files:
      a pileup file and a file .snps (by samtools.pl varFilter).

      This is an example of my file .snps:

      g hsa-let-7a-3 61 * */+A 73 73 40 81 * +A 79 2 0 0 0
      g hsa-let-7a-3 63 * */-C 133 133 45 79 * -C 76 1 2 3 1
      g hsa-let-7a-3 64 * */-T 165 165 44 78 * -T 77 1 0 0 0
      g hsa-let-7a-3 68 * */-T 385 385 40 53 * -T 52 1 0 0 0
      g hsa-let-7a-3 70 * */+A 78 78 35 43 * +A 42 1 0 0 0
      D hsa-let-7b 22 * */+A 895 895 22 1717 * +A 1652 36 29 7 37
      D hsa-let-7b 24 * */+TC 14761 14761 23 1728 * +TC 1573 51 104 7 4
      D hsa-let-7b 25 * +TA/+CTA 17955 37444 23 1730 +TA +CTA 32 17 1681 35 18
      D hsa-let-7b 26 * +A/+TA 21497 46739 23 1732 +A +TA 393 162 1177 40 29
      D hsa-let-7b 27 * +A/* 31077 31077 23 1733 +A * 6 1651 76 4 5
      D hsa-let-7b 28 T Y 228 228 23 1736 ,,.+1C,,$C.C...+4ATTC.+4ATTC*.+4ATTCC,.+1C.,...+4ATTCC..+1CCC.+1CC.+4ATTC
      .+1C.+4ATTC.+1C..+4ATTC.+4ATTC.+4ATTCC.+1C*.+4ATTCC.+1CC.+4ATTCC.+1C...+1CCC.+1C.+4ATTCC..+1CC.+1C.+1C.+1C.+1CC.+1C.+4ATTCC.+1C.+1C...+4ATTC.+1C.C..+1C.C
      ..+1C..+1C..+1C.....+4ATTCC.+4ATTCC..+4ATTC..C.+4ATTC.C.+1C.+4ATTCC.+1C.+4ATTCC...+4ATTC.C.+4ATTC.+1C......C.+4ATTC..+1C.+4ATTC.+1C.C.+4ATTC.+1CCCC.+1C.+
      1C.+4ATTC.+1C.+4ATTC.+1C.+4ATTC.+4ATTC.+4ATTC.+1C.+1CC.+4ATTC.+1CCC.+1CC.+1C.+1CC.C.+1CC.+1C.+1C.+4ATTC.+4ATTC..+1C.+1C.+1CCC.+4ATTCC.+1CC.+1C...C.+1C.+1
      CC.+4ATTC..+1C.+1C.+1C.+1C*.+4ATTC..+4ATTC.+1C.+1C.+1C.+1C.+1CC.CC.+4ATTC.+1C.+1CC..+1C..+1C.+1C..+1C.+4ATTC.+1C.+1C.+1C...+1C...+1C.A.+4ATTC.+4ATTC.-1C.
      +3CGC.+2TC.+1C.+1CC.+1C.+4ATTC..+4ATTC.+4ATTCC..+1C.+1C.C.CC.+4ATTCC.+4ATTC.+1C.+1C.+4ATTC.+1CC.C.+1C.+4ATTC.+4ATTC.+4ATTC.+1CC.+4ATTCC.+4ATTC.+4ATTC.+1C
      .+1CCC.+1C.+1C.+1C.+1C.+1CC.+4ATTC.+1CCC.+1CCCC.+1C.+1C.+4ATTC.+1CC.+1C..+4ATTC.CC.+1C.+4ATTC.+1C.CC.+1C.C.+1C.+1C.+1CC.+1CC.+1C.+1C.+1C.+4ATTC.+4ATTC.+1
      C.+4ATTCC.+1C.+1C.+1C.+1C.+1CC.+5CATTC.+4ATTC.+4ATTCCC.+1C.+1C.+1CC..C.+4ATTC.+1C..+1C..+1C.+1CC.+1C*.+1CCC.+4ATTC.+4ATTC..+1C.+1C..+1C..C.+4ATTC.+4ATTC.
      +4ATTC.C.+4ATTC.+1CC..+1C.+1CC.+4ATTC.+1C.+1C.CCC.+1C.+1C.+4ATTC.+4ATTC.+1C.+1CC..-1CC.+1C.+1C.+1C..+1C.+1C..+1C*...+1CC.+1C...+4ATTC.+1C.+1CC..+4ATTC..+
      1C...+1CC.+1C.+1C..C.+1C.-2CACC..C..+4ATTCA.+1C..+1C.+4ATTC..+1C.+1C..+1CC.+4ATTC.+4ATTC.+1C.+1C..+6GTATTCC.C.+4ATTC.+1C..+1C.+4ATTC.+4ATTC.+4ATTCC.

      But I don't know how I can read this file. What correspond to each column?
      How or where can I find the number of reads (the number of count of miRNA in the alignment)?

      Thanx a lot!
      Bye
      M.Elena
      I assume you are having problems understanding the samtools pileup output and BFAST ran fine. Take a look at these two pages on the samtools website that explain the output format:

      http://samtools.sourceforge.net/pileup.shtml
      http://samtools.sourceforge.net/cns0.shtml

        Comment

        • lh3
          Senior Member
          • Feb 2008
          • 686
          #3
          I guess you are using "samtools.pl -p" which explains why your variants get filtered out. The first letter gives the reason:

          # d low depth
          # D high depth
          # W too many SNPs in a window (SNP only)
          # G close to a high-quality indel (SNP only)
          # Q low RMS mapping quality (SNP only)
          # g close to another indel with higher quality (indel only)

          Note that if a SNP is filtered out due to depth, it will not be tested with "G".

            Comment

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