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  • karinlag
    Junior Member
    • Jul 2010
    • 5

    #1

    cuffmerge options and results

    Hi!

    I have several different samples that I have been running tophat and cufflinks on, and I am now doing cuffmerge on the end result of this. My goal is to get a transcriptome fasta file at the end.

    I have used the following commands:

    tophat2 --b2-very-sensitive -p num -r num --mate-std-dev num --library-type fr-unstranded -G genome.gtf --transcriptome-index=indexfile -o outputdir referencegenome 1.fastq 2.fastq

    followed by cufflinks without any options, i.e.

    cufflinks -p 22 -o newoutput outputdir/accepted_hits.bam

    So, now I am at the stage where I want to merge these things, and I have questions:

    1. what is the difference between merged.gtf and transcripts.gtf?

    2. what happens if I also include a reference gtf file with the -g option?Is it incorporated in the same way as the other gtf files, or is it only used for naming?

    3. what happens if I include the referencegenome with the -s option?

    Thanks!

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