##gff-version 3 A3MS44 UniProtKB Propeptide 1 1 . . . ID=PRO_0000397400;Note=Removed in mature form%3B by autocatalysis;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113 A3MS44 UniProtKB Chain 2 201 . . . ID=PRO_0000397401;Note=Proteasome subunit beta 1 A3MS44 UniProtKB Active site 2 2 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113