Question: Control gene size for gene enrichment study
gravatar for michealsmith
3.2 years ago by
michealsmith740 wrote:

I would like to test if genes containing at least one transcription factor (say MEF2A) binding sites are enriched for certain category.

I could easily come up with a TF-containing-gene list by intersecting TF binding sites bed files with gene annotation bed files, and send for enrichment study.

But question is: if one gene is big, naturally it tends to be more likely to contain TF binding sites. So should I first control gene size?

So I should normalize by assigning one parameter to each gene as: (overlap size)/(gene size) ? And then sort and select say the top 200 or 500?

gene enrichment go • 858 views
ADD COMMENTlink written 3.2 years ago by michealsmith740

Is the transcription factor more likely to be biologically relevant when bound to promoters? If that's true, you could just restrict the overlap to TSS+/- 1kb which would generate fragments of equal length.

ADD REPLYlink modified 3.2 years ago • written 3.2 years ago by jotan1.2k

No, the TF bind to everywhere, which are all biologically relevant.

ADD REPLYlink written 3.2 years ago by michealsmith740
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