[BioC] search probe-ids for gene-symbols

Vincent Carey 525-2265 stvjc at channing.harvard.edu
Mon Jan 24 16:50:40 CET 2005


> Hello,
> I would like to find affymetrix probe-ids for several gene-symbols.
> When I use
> /aafSearchText("hgu133a","Symbol",c("MYCN", "DDX1", "NAG"))/
> probeids of DDX17 and NAG3 etc are also found (annaffy-library).
> How can I obtain only the probe-ids of these 3 specific genes?
> Best regards,
> Katleen

aafSearchText is using the R grep function.

Try using full regular expression specification in your
symbol pattern.

aafSearchText("hgu133a", "Symbol", "^DDX1$")

returns a single probeset id.

^ denotes match must occur from beginning of string
$ denotes match must end with preceding character

>
> --
> *dr. ir. Katleen De Preter*
> Center for Medical Genetics Ghent (CMGG)
> Ghent University Hospital
> Medical Research Building (MRB), 2nd floor, room 120.038
> De Pintelaan 185, B-9000 Ghent, Belgium
> +32 9 240 5533 (phone) | +32 9 240 6549 (fax)
> http://medgen.ugent.be
> Katleen.DePreter at UGent.be <mailto:Katleen.DePreter at UGent.be>
>
>
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