associate GO ID with GO description

Question

[lessismore]

Dear all,

i have an enrichment output file displaying only GO IDs. Two questions: (1) Can somebody suggest a way to associate GO category description to the GO ID? Where do i retrieve such a file? Sorry for the maybe trivial question. (2) Would be also very much appreciated a tip on a tool to perform gene set enrichment analysis (also with custom GO annotation files) and manipulate/visualize the output with R.

Thanks in advance

Answer 1

[Jean-Karim Heriche]

1- You can retrieve the whole ontology from the download page of Gene Ontology web site or use the Bioconductor package GO.db, e.g.

library(GO.db)
GO <- as.list(GOTERM)
my.term <- GO$`GO:0000001`@Term

2- Has already been asked here somewhere. I just don't have time now to locate it for you.