hgu133aUNIGENE {hgu133a} | R Documentation

## Mappings between probe identifiers and UniGene cluster identifiers

### Description

NCBI partitions sequences submitted to GenBank into non-redundant sets of clusters. Each cluster contains sequences that represent a unique gene and is assigned a unique UniGene id. hgu133aUNIGENE maps probe identifiers to UniGene cluster identifiers for genes represented by the probe ids

### Details

A UniGene id represents a cluster of sequences of a gene. Using UniGene ids one can query the UniGene database for information about the sequences or the LocusLink database for information about the genes.

Mappings were based on data provided by:

LocusLink:ftp://ftp.ncbi.nih.gov/refseq/LocusLink/LL_tmpl.gz. Built: January 12, 2005

Package built Wed Jan 12 22:21:54 2005

### References

http://www.ncbi.nlm.nih.gov/LocusLink

### Examples

        # Convert the environment to a list
        xx <- as.list(hgu133aUNIGENE)
        # Remove probe ids that do no map to any UniGene id
        xx <- xx[!is.null(xx)]
        if(length(xx) > 0){
            # The UniGene ids for the first two elements of XX
            xx[1:2]
            # Get the first one
            xx[[1]]
        }

[Package hgu133a version 1.7.0 Index]