##gff-version 3 Q18GX3 UniProtKB Propeptide 1 49 . . . ID=PRO_0000397304;Note=Removed in mature form%3B by autocatalysis;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113 Q18GX3 UniProtKB Chain 50 243 . . . ID=PRO_0000397305;Note=Proteasome subunit beta Q18GX3 UniProtKB Region 1 40 . . . Note=Disordered;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-lite Q18GX3 UniProtKB Active site 50 50 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113