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Find exon-exon spanning reads

I'm trying to find intron-spanning reads (which should be the same as exon-exon spanning reads) to find 'real' coding transcripts. What software/programs can be used to achieve this?

exon

Are you worried about DNA contamination?

yes exactly

one hacky way to do it could be to filter only reads that have a skip e.g. a N in the cigar string...grep on the CIGAR column for N

Yes I think this is the solution because spliced reads are the same as exon-exon spanning reads! I hadn't thought of that, thanks!

1 answer

There are a ton of threads with the same/similar question. Here's a good place to start but with a bit of googling you can find several more threads.

I want to generate counts for exon-exon spanning reads only and want to use HTSeq count for this if possible. I'm on the Galaxy website and can provide a BAM file of my sample, but as far as I can see, none of the GENCODE GTF files contains information on whether certain reads are exon-exon spanning reads. So how should I do this?

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