Hello Richard,

The UTR exon is not aligned because the cross-species RefGene
tracks are aligned using protein-translated blat, which often will
not align UTR.

TransMap uses a different approach to cross-species alignment
and will do a better job of aligning UTR.  Here is the details page for 
transmap, so you can read more about how it works:

http://genome.ucsc.edu/cgi-bin/hgTrackUi?c=chr12&g=transMap

I hope this information is helpful to you.  Please don't hesitate to contact us 
again if you require further assistance.

Kayla Smith
UCSC Genome Bioinformatics Group




----- "Richard O'Brien" <[email protected]> wrote:

> Dear Sir/Madam,
> 
>     I noticed an error with the display of the human GEM gene
> (NM_181702)
> when viewed in the mouse July 2007 genome browser:
> 
> http://genome.ucsc.edu/cgi-bin/hgTracks?insideX=115&revCmplDisp=0&hgsid=1449
> 70113&hgt.right2=%3E%3E+&position=chr4%3A11630546-11632651&hgtgroup_map_clos
> e=0&hgtgroup_genes_close=0&hgtgroup_rna_close=0&hgtgroup_phenoAllele_close=0
> &hgtgroup_regulation_close=0&hgtgroup_compGeno_close=0&hgtgroup_varRep_close
> =0
> 
>     The human gene has a 5' non-coding exon that is not displayed.
> 
>     When the human GEM gene is viewed in the human March 2006 browser
> the
> non-coding exon is displayed correctly.
> 
> Regards, Richard O'Brien
> 
> Professor 
> Room 8415 MRB IV 
> Dept. Molecular Physiology & Biophysics
> Vanderbilt University Medical School
> Nashville 
> TN 37232 
> Tel 615-936-1503 
> Fax 615-322-7236 
> 
> _______________________________________________
> Genome maillist  -  [email protected]
> https://lists.soe.ucsc.edu/mailman/listinfo/genome
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