gahgu133bENTREZID {gahgu133b.db} | R Documentation

## Map between probeset Identifiers and Entrez Gene

### Description

gahgu133bENTREZID is an R object that provides mappings between probeset identifiers and Entrez Gene identifiers. gahgu133bENTREZID2PROBE provides the reverse mapping.

### Details

Each probeset identifier is mapped to a vector of Entrez Gene identifiers. An `NA` is assigned to those probeset identifiers that can not be mapped to an Entrez Gene identifier at this time.

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

### Examples

            x <- gahgu133bENTREZID
            # Get the probe identifiers that are mapped to an ENTREZ Gene ID
            mapped_probes <- mappedkeys(x)
            # Convert to a list
            xx <- as.list(x[mapped_probes])
            if(length(xx) > 0) {
              # Get the ENTREZID for the first five probes
              xx[1:5]
              # Get the first one
              xx[[1]]
            }

[Package gahgu133b.db version 2.0.1 Index]