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  • PatB
    Junior Member
    • Feb 2013
    • 3

    #1

    Bedtools getfasta

    Hi,

    I am triing to use BEDtools to get some sequences from genomic coordinates. But I am having an errors saying " WARNING. chromosome (chr12) was not found in the FASTA file. Skipping." for each read that I have in my bed file.
    I gave you some details about what I am doing.

    I just download the last version of BEDtools (I think) bedtools-2.17.0.

    Then I have 2 different files (much more longer that the little part that I show) :
    * A fasta file with all the sequences of chromosomes

    >chr01
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
    NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN

    * a BED file with my genomic coordinates (already sorted)
    chr01 187814 190840
    chr01 307073 310104
    chr01 701047 704068
    chr01 702941 705962
    chr01 702952 705972
    chr01 867716 870740
    chr01 914064 917087
    chr01 991080 994104
    chr01 1039795 1042815
    chr01 1058713 1061736

    And then I write the command line:
    bedtools getfasta -fi all.con -bed 1-13_sorted2.bed -fo NewCandidates/Genomic_coordinates/1-13_1500.fa

    The only thing that I get is "WARNING. chromosome (chr01) was not found in the FASTA file. Skipping." , thousands of times...

    If someone can help me and told me what I am doing wrong, I will be very grateful.

    Thank you all of you in advance.
    Patrícia Baldrich González
    Departament of Molecular Genetics
    Center for Research in Agricultural Genomics(CRAG) Parc de Recerca UAB
    Edifici CRAG, Campus UAB Bellaterra (Cerdanyola del Vallés)
    08193 BARCELONA SPAIN
    0034 93 563 6600 Ext. 3124
    Email: [email protected]
  • arozanski
    Junior Member
    • Feb 2012
    • 1

    #2
    Hi Patricia,

    Well I had sort of that problem too.
    In my situation it was all about names and "tabs".
    I looks like that you have a problem on your fasta -> all.con
    Like Chr and chr.

    Hope it helps.

    arozanski

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