Map between probeset and Gene Symbols

Description

gahgu95bSYMBOL is an R object that provides mappings between probeset and gene abbreviations. gahgu95bSYMBOL2PROBE provides the reverse mapping.

Details

Each probeset is mapped to an abbreviation for the corresponding gene. An NA is reported if there is no known abbreviation for a given gene.

Symbols typically consist of 3 letters that define either a single gene (ABC) or multiple genes (ABC1, ABC2, ABC3). Gene symbols can be used as key words to query public databases such as Entrez Gene.

Mappings were based on data provided by: Genecards ( http://www.genecards.org ) on 2009-mag06

References

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene

Examples

        x <- gahgu95bSYMBOL
        # Get the probe identifiers that are mapped to a gene symbol
        mapped_probes <- mappedkeys(x)
        # Convert to a list
        xx <- as.list(x[mapped_probes])
        if(length(xx) > 0) {
          # Get the SYMBOL for the first five probes
          xx[1:5]
          # Get the first one
          xx[[1]]
        }