hgu133aUNIGENE {hgu133a} | R Documentation |
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
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
http://www.ncbi.nlm.nih.gov/LocusLink
# 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]] }