\HeaderA{hsahomologyLL2HGID}{Mappings between public database ids and NCBI's Internal
HomoloGeneIDs for Homo sapiens}{hsahomologyLL2HGID}
\aliasA{hsahomologyACC2HGID}{hsahomologyLL2HGID}{hsahomologyACC2HGID}
\aliasA{hsahomologyHGID2ACC}{hsahomologyLL2HGID}{hsahomologyHGID2ACC}
\aliasA{hsahomologyHGID2LL}{hsahomologyLL2HGID}{hsahomologyHGID2LL}
\keyword{datasets}{hsahomologyLL2HGID}
\begin{Description}\relax
Provides mappings between public database ids and internal
HomoloGeneIDs (HGID) used by NCBI to represent sequences for
Homo sapiens. Public database ids include LocusLink ids (LL) and GenBank
Accesion/RefSeq numbers (ACC).
\end{Description}
\begin{Details}\relax
Each object is an environment object with key and value pairs. Keys
are ids specified by the abbreviation proceeding the number 2 of the
name of an object (e.g. LL in hsahomologyLL2HGID) and values are ids
specified by the abbreviation following the number 2 (e.g. HGID in
hsahomologyLL2HGID). Values may be vectors of length 1 or greater depending
on whether a key id can be mapped to only one or more other
ids. Vector names are the code used by NCBI for various organism.

hsahomologyLL2HGID or hsahomologyACC2HGID can be used to find the
HomoloGeneIDs for a give LocusLink id or GenBank/RefSeq accession
number and then the data for homologous genes found in other
organisms.  

Mappings contained were based on data provided by HomoloGene.

HomoloGene:\url{ ftp://ftp.ncbi.nih.gov/pub/HomoloGene/old/hmlg.ftp}. Built: HomoloGene built date not available

Packagebuilt Fri Jan  7 09:30:30 2005
\end{Details}
\begin{References}\relax
\url{http://www.ncbi.nih.gov/entrez/query.fcgi?db=homologene}
\end{References}
\begin{Examples}
\begin{ExampleCode}
    require("annotate") || stop("annotate unavailable")
    xx <- as.list(hsahomologyLL2HGID)
        if(length(xx) > 5){
                # Get the value of the first key
                xx[2]
                # Get the value for a few keys
                if(length(xx) >= 3){
                        xx[2:4]
                }
        }
\end{ExampleCode}
\end{Examples}

