##gff-version 3 P00650 UniProtKB Chain 1 101 . . . ID=PRO_0000137368;Note=Guanyl-specific ribonuclease St P00650 UniProtKB Active site 61 61 . . . Note=Proton acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250 P00650 UniProtKB Active site 91 91 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250 P00650 UniProtKB Disulfide bond 4 54 . . . Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:1269746;Dbxref=PMID:1269746