The GO website has a section called "Other File Downloads": http://www.geneontology.org/GO.downloads.files.shtml The above url states that the following two files are updated daily, but the files contain date stamps from 12/17/2007. http://www.geneontology.org/doc/GO.terms_and_ids http://www.geneontology.org/doc/GO.terms_alt_ids -Doug