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  • Blast+ Output help

    Hey guys, I am trying new ways to speed up the Blasting process and have tried splitting my assembled transcriptome into small files and running a local blast with each one. I ran a sample file and it worked a lot faster than any other way I've tried, but I'm having a problem when attempting to load the output file into Blast2Go. Can anyone shed some light on the issue? I was hoping to run all the files, merge them all and load them up into Blast2Go fully blasted and ready to annotate. Thanks in advance for any help.

  • #2
    Surely people have used Blast+?

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    • #3
      Did you set the blast output to XML (-outfmt 5)?

      Can you be more specific than "I'm having a problem when attempting to load the output file into Blast2Go."?

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      • #4
        Originally posted by atcghelix View Post
        Did you set the blast output to XML (-outfmt 5)?

        Can you be more specific than "I'm having a problem when attempting to load the output file into Blast2Go."?
        No, i didn't enter that command. I have an output file named x after performing Blastx on a file containing contigs. I'm attempting to load the file into Blast2Go software but receive an error saying the file needs to be in gzip format. Will the -outfmt 5 setting allow me to do so?

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        • #5
          Are you running Blast2GO locally? Or on a web server somewhere?

          I was under the impression that you needed to feed Blast2GO a blast file that was output in XML format, but I may be wrong.

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          • #6
            Originally posted by atcghelix View Post
            Are you running Blast2GO locally? Or on a web server somewhere?

            I was under the impression that you needed to feed Blast2GO a blast file that was output in XML format, but I may be wrong.
            nope, I think the only output it can handly is XML since it is the most stable one.

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            • #7
              Originally posted by Shorash View Post
              No, i didn't enter that command. I have an output file named x after performing Blastx on a file containing contigs. I'm attempting to load the file into Blast2Go software but receive an error saying the file needs to be in gzip format. Will the -outfmt 5 setting allow me to do so?
              Gzip is a compression format that is separate from BLAST. You can convert your results file to gzip on the Linux or Mac command line, I'm sure there are also Windows tools.

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              • #8
                Hey,
                This is what it work for me so far. Using blast+ or blastall with xml as output. When the number of query seqs is quite high, load them into blas2go takes too much time, so I use blas2gopipe. I'm still working on this workflow, where I have some issues connecting to the database (why blast2go have so many problems with that?). Anyway, if you are able to run it, it will generate a projectfile (.dat) which you can open with blas2go desktop and run the annotation.

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