[BioC] how does an annotation package handle ambigious probe set id mappings
yee at post.harvard.edu
Mon Oct 19 17:27:28 CEST 2009
Apologies if this has been asked before, but how does an annotation
package handle an ambiguous probe set ID mapping?
Take for example the Affymetrix chip U133X3P.
When I use the annotation for this chip for probe set ID
1552641_3p_s_at, it returns only one match:
> mget('1552641_3p_s_at', env=u133x3pSYMBOL)
> mget('1552641_3p_s_at', env=u133x3pENTREZID)
However, when I search Affymetrix, with:
it states that it ambiguously maps to three gene symbols, ATAD3A,
ATAD3B, and LOC732419.
How does the annotation package determine which gene symbol it should map to?
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