\HeaderA{GOMFANCESTOR}{Annotation of GO identifiers to their Molecular Function Ancestors}{GOMFANCESTOR}
\keyword{datasets}{GOMFANCESTOR}
\begin{Description}\relax
This data set describes associations between GO molecular function (MF)
terms and their ancestor MF terms, based on the directed acyclic
graph (DAG) defined by the Gene Ontology Consortium. The format is an R
environment mapping the GO MF terms to all ancestor terms, where an
ancestor term is a more general GO term that precedes
the given GO term in the DAG (in other words, the parents, and all
their parents, etc.).
\end{Description}
\begin{Details}\relax
Each GO MF term is mapped to a vector of ancestor GO MF terms.

Molecular function is defined as the tasks performed by individual
gene products; examples are transcription factor and DNA helicase as
defined by Gene Ontology Consortium.  

Mappings were based on data provided:

Gene Ontology:\url{http://gopher5/compbio/annotationSourceData/archive.godatabase.org/latest/}. Built: 200509

Package built: Fri Sep 30 02:51:32 2005
\end{Details}
\begin{References}\relax
\url{http://www.geneontology.org/} and
\url{http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene}
\end{References}
\begin{Examples}
\begin{ExampleCode}
  require("GO", character.only = TRUE) || stop("GO unavailable")
  # Convert the environment object to a list
  xx <- as.list(GOMFANCESTOR)
  # Remove GO ids that do not have any ancestor
  xx <- xx[!is.na(xx)]
  if(length(xx) > 0){
    # Get the ancestor GO ids for the first two elents of xx
    goids <- xx[1:2]
  }
\end{ExampleCode}
\end{Examples}

