Hi,
I was wondering how UTR regions(3' or 5') are defined for non coding regions on 
browser. 
For an example: Refseq gene FAM138F (NR_026820.1) and UCSC gene uc001aak.1 are 
both non coding and have exactly same sequence and located in the same region o 
the browser. Also both are on negative strand. When I tried to download the 
genomic sequence(excluding intron region) for both the genes separately, I get 
only 3'UTR sequence for NR_026820.1 where as the same sequence is defined as 
5'UTR for uc001aak.1.

I am wondering about the UCSC browser conventions for defining these UTR 
regions. I tried to look at the help page on: 
http://genome.ucsc.edu/goldenPath/help/hgTracksHelp.html#FineTuning but 
couldn't find enough information from there.

Thanks.



-- 
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Vinay Kumar Mittal
MS,Bioinformatics
Georgia Institute of Technology
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