On Tue, Sep 1, 2009 at 12:01 AM, Christopher Lee <[email protected]> wrote:

>
>
> On Aug 31, 2009, at 7:03 PM, Jenny Qing Qian wrote:
>
> > As the ensembl database, the ucsc database has various kinds of
> > annotation feature tables like exons and genes.  I am not sure
> > whether they also have a seq_region table.  I assume they directly
> > map their annotations to their reference genomes, not via
> > contigs...  If this is the case, then we could just simplify the
> > seqregion.py and work out the mapping.  Agree?
> >
> > There is no seqregion table.
> >
> > Thanks.  That helps to simplify the case.  If they don't store the
> > sequences at contig-level in a separate table, they probably don't
> > need a seqregion table for coordinates transformation.
>
> I'd expect that UCSC would map the Ensembl annotations directly onto
> their own assembly (i.e. no more seq_region; "stop the madness!"), and
> it sounds like that's what they've actually done.  If you can identify
> a few candidate tables in their MySQL server that store gene and exon
> annotations, we can quickly do an experiment to see how hard it would
> be to plug these annotations into Pygr.  I bet it'll be
> straightforward, and could be good to include in the tutorial.


Sounds good.  We could try gene and exon tables as a start...

Namshin, is there a known alternative splicing table as well?

thanks,
Jenny

>
>
> -- Chris
>
> >
>

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