Map custom probeset IDs to gene start position

Description

gahgu133aGENESTART is an R environment that provides mappings between a custom probeset identifier and the base pair starting position of gene onto corresponding chromosome.

Details

Each identifier maps to a gene start position. If the gene start position is unknown, the vector will contain an NA.

Mappings were based on data provided by:

GeneCards database - www.genecards.org

Package built: Mon Feb 25 23:29:01 2008

References

www.genecards.org

Examples

        # Convert to a list
        xx <- as.list(gahgu133aGENESTART)
        # Remove probe identifiers that do not map to any gene start position
        xx <- xx[!is.na(xx)]
        if(length(xx) > 0){
            # Get the base pair number for gene start position for the first five probes
            xx[1:5]
            # Get the first one
            xx[[1]]
        }