================================================ PRotein Ontology (PRO) Release 19.0, version 0 25-May-2011 The Protein Ontology Consortium--Protein Information Resource, The Jackson Laboratory, Reactome, and the Department of Philosophy at the State University of New York at Buffalo--is pleased to announce PRO Release 19.0 (25-May-2011). PRO describes the relationships of proteins and protein evolutionary classes, delineates the multiple protein forms of a gene locus (ontology for protein forms), protein complexes, and interconnects existing ontologies. Further information is available at http://pir.georgetown.edu/pro/. In PRO Release 19.0, version 0: There are 26999 PRO terms 4 terms are in the 'organism-family' category. 304 terms are in the 'family' category. 18201 terms are in the 'gene' category. 1357 terms are in the 'sequence' category. 5914 terms are in the 'modification' category. 62 terms are in the 'complex' category. 356 terms are in the 'organism-gene' category. 363 terms are in the 'organism-sequence' category. 207 terms are in the 'organism-modification' category. 110 terms are in the 'organism-complex' category. 9 terms are in the 'union' category. 1550 terms have some kind of annotation, codifying the information from 1035 papers. 2295 connections to GO (779 PRO terms). 374 connections to MOD (327 PRO terms). 604 connections to Pfam (362 PRO terms). 338 connections to SO (317 PRO terms). 306 annotations of a phenotype (299 PRO terms). The ontology includes a subset of terms from GO, MOD, CHEBI, and SO ontologies that are used for logical definitions. If using OBO Edit to view PRO, please turn on the reasoner in order to display the hierarchy. _Current changes_ None ================================================