##gff-version 3 C5BVA2 UniProtKB Propeptide 1 47 . . . ID=PRO_0000397500;Note=Removed in mature form%3B by autocatalysis;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113 C5BVA2 UniProtKB Chain 48 272 . . . ID=PRO_0000397501;Note=Proteasome subunit beta C5BVA2 UniProtKB Active site 48 48 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113