\HeaderA{org.Hs.egUNIGENE}{Map between Entrez Gene Identifiers and UniGene cluster identifiers}{org.Hs.egUNIGENE}
\aliasA{org.Hs.egUNIGENE2EG}{org.Hs.egUNIGENE}{org.Hs.egUNIGENE2EG}
\keyword{datasets}{org.Hs.egUNIGENE}
\begin{Description}\relax
org.Hs.egUNIGENE is an R object that provides mappings between
entrez gene identifiers and UniGene identifiers.
\end{Description}
\begin{Details}\relax
Each entrez gene identifier is mapped to a UniGene identifier. An \code{NA} is
reported if the entrez gene identifier cannot be mapped to UniGene at this time. 

A UniGene identifier represents a cluster of sequences of a gene. Using
UniGene identifiers one can query the UniGene database for information about
the sequences.  

Mappings were based on data provided by: Entrez Gene ( ftp://ftp.ncbi.nlm.nih.gov/gene/DATA ) on 2008-Apr2
\end{Details}
\begin{References}\relax
\url{http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene}
\end{References}
\begin{Examples}
\begin{ExampleCode}
        x <- org.Hs.egUNIGENE
        # Get the Unigene identifiers that are mapped to an entrez gene id
        mapped_genes <- mappedkeys(x)
        # Convert to a list
        xx <- as.list(x[mapped_genes])
        if(length(xx) > 0) {
          # Get the UNIGENE for the first five genes
          xx[1:5]
          # Get the first one
          xx[[1]]
        }
        # For the reverse map:
        x <- org.Hs.egUNIGENE2EG
        # Get the entrez gene identifiers that are mapped to a Unigene id
        mapped_genes <- mappedkeys(x)
        # Convert to a list
        xx <- as.list(x[mapped_genes])
        if(length(xx) > 0) {
          # Get the entrez gene for the first five genes
          xx[1:5]
          # Get the first one
          xx[[1]]
        }
\end{ExampleCode}
\end{Examples}

