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 -- *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@UGent.be <mailto:katleen.depreter@ugent.be> -- No virus found in this outgoing message. Checked by AVG Anti-Virus.

> 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@UGent.be <mailto:katleen.depreter@ugent.be> > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > > _______________________________________________ > Bioconductor mailing list > Bioconductor@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/bioconductor >