##gff-version 3 B1L6S7 UniProtKB Propeptide 1 5 . . . ID=PRO_0000397322;Note=Removed in mature form%3B by autocatalysis;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113 B1L6S7 UniProtKB Chain 6 206 . . . ID=PRO_0000397323;Note=Proteasome subunit beta 1 B1L6S7 UniProtKB Active site 6 6 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113