\HeaderA{GOMFOFFSPRING}{Annotation of GO Identifiers to their Molecular Function Offspring}{GOMFOFFSPRING}
\keyword{datasets}{GOMFOFFSPRING}
\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 specific GO term that is preceded
by the given GO term in the DAG (in other words, the children and all
their children, etc.).
\end{Description}
\begin{Details}\relax
Each GO MF term is mapped to a vector of offspring 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 by:

Gene Ontology:\url{http://gopher5/compbio/annotationSourceData/archive.godatabase.org/latest/}. Built: 08-Aug-2006

Package built: Tue Sep  5 18:42:30 2006
\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(GOMFOFFSPRING)
  # Remove GO identifiers that do not have any offspring
  xx <- xx[!is.na(xx)]
  if(length(xx) > 0){
    # Get the offspring GO identifiers for the first two elents of xx
  goids <- xx[1:2]
  }
\end{ExampleCode}
\end{Examples}