##gff-version 3 D1A3V2 UniProtKB Propeptide 1 52 . . . ID=PRO_0000397598;Note=Removed in mature form%3B by autocatalysis;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113 D1A3V2 UniProtKB Chain 53 280 . . . ID=PRO_0000397599;Note=Proteasome subunit beta 2 D1A3V2 UniProtKB Active site 53 53 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113