##gff-version 3 A1SK13 UniProtKB Propeptide 1 48 . . . ID=PRO_0000397560;Note=Removed in mature form%3B by autocatalysis;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113 A1SK13 UniProtKB Chain 49 283 . . . ID=PRO_0000397561;Note=Proteasome subunit beta A1SK13 UniProtKB Region 264 283 . . . Note=Disordered;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-lite A1SK13 UniProtKB Active site 49 49 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_02113