GOMFOFFSPRING {GO} | R Documentation

## Annotation of GO identifiers by the GO identifiers of their offspring

### Description

This is an R environment (hash table) mapping GO ids to all the GO ids of their offspring under molecular function (MF). Offspring are defined as the direct or indirect children/grand children nodes of a given node for a GO id based on the directed acyclic graph defined by Gene Ontology Consortium. GO terms for offspring nodes are more specific

### Details

GO ids are keys and the corresponding offspring GO ids are values. Values are vectors of GO ids for all the offspring of the key GO id. GO ids that do not have any offspring node are assigned NA as the values.

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:http://www.godatabase.org/dev/database/archive/2004-09-01/go_200409-termdb.xml.gz. Built: 2004-09-01

Package built: Mon Jan 10 19:19:56 2005

### References

http://www.geneontology.org/ and http://www.ncbi.nlm.nih.gov/LocusLink

### Examples

      require("GO", character.only = TRUE) || stop("GO unavailable")
      # Convert the environment object to a list
      xx <- as.list(GOMFOFFSPRING)
      # Remove GO ids that do not have any offspring
      xx <- xx[!is.na(xx)]
      if(length(xx) > 0){
        # Get the offspring GO ids for the first two elents of xx
      goids <- xx[1:2]
      }

[Package GO version 1.7.0 Index]