PRotein Ontology (PRO) Release 4.0 Note
20-January-2009


The Protein Ontology Consortium--Georgetown University Medical Center (GUMC), The Jackson Laboratory, and the Department of Philosophy, State University of New York at Buffalo--is pleased to announce PRO Release 4.0 (20-January-2009). PRO describes the relationships of proteins and protein evolutionary classes, delineates the multiple protein forms of a gene locus (ontology for protein forms), and interconnects existing ontologies. Further information is available at http://pir.georgetown.edu/pro/.

PRO Release 4.0 consists of 1269 terms with their respective definitions, comprising 676 proteins.