\name{hgu2beta7PATH2PROBE}
\alias{hgu2beta7PATH2PROBE}
\title{Mappings between KEGG pathway identifiers and probe identifiers}
\description{
  KEGG (Kyoto Encyclopedia of Genes and Genomes) maintains pathway data
  for various organisms. Each pathway has a name, pathway id, and
  graphical presentation of the pathway. hgu2beta7PATH2PROBE maps KEGG
  pathway ids to probe identifiers representing genes whose products
  participate in the interactions of the pathway
}
\details{
  Pathway name for a given pathway id can be obtained using the KEGG
  data package that can either be built using AnnBuilder or downloaded
  from Bioconductor \url{http://www.bioconductor.org}.

  Graphic presentations of pathways are searchable at
  \url{http://www.genome.ad.jp/kegg/pathway.html} using pathway ids as keys.
  
  Mappings were based on data provided by:

  KEGG:\url{ftp://ftp.genome.ad.jp/pub/kegg/pathways}. Built: Release 33.0
  (January 2005) 

  LocusLink:\url{ftp://ftp.ncbi.nih.gov/refseq/LocusLink/LL_tmpl.gz}. Built:
  February 16, 2005 

}
\references{
\url{http://www.genome.ad.jp/kegg/}
}
\examples{
    # Convert the environment to a list
    xx <- as.list(hgu2beta7PATH2PROBE)
    # Remove pathway ids that do not map to any probe id
    xx <- xx[!is.na(xx)]
    if(length(xx) > 0){
        # The probe ids for the first two elements of XX
        xx[1:2]
        # Get the first one
        xx[[1]]
    } 
}

\keyword{datasets}