[Genome] knownToU133

[Rachel Harte]

Jeffrey,
In the knownToU133 table we map the most overlapping probe sequence
alignment from U133 to the each of the Known Genes. There should only be
one probe sequence mapped to each Known Gene but each probe sequence may
map to multiple Known Genes. Please let us know if you find otherwise and
send examples.

When I say Known Genes, I mean am actually talking about mRNA transcripts.
Each gene may be represented by several transcripts in Known Genes and
therefore you could have a gene being mapped to several different probes.

I hope that this helps you. Please let us know if you have further
questions.

Rachel

Rachel Harte
UCSC Genome Bioinformatics Group
http://genome.ucsc.edu


On Thu, 15 Mar 2007, Jeffrey Rosenfeld wrote:

> I am trying to map the Gene Atlas data to the genome to look for regions
> of correlated expression.  I am therefore trying to localize the
> information for each probe from the U133A and GNF1H chips to a location
> on the genome.  I understand that often there will be multiple probes
> that map to the same gene. What I don't understand is why there are
> multiple genes mapping to the same probe?  Can you please expalin this.
>
> Thank You,
>
> Jeffrey Rosenfeld
> Cold Spring Harbor
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