##gff-version 3 P16954 UniProtKB Initiator methionine 1 1 . . . Note=Removed P16954 UniProtKB Chain 2 774 . . . ID=PRO_0000188756;Note=1%2C4-alpha-glucan branching enzyme GlgB P16954 UniProtKB Active site 440 440 . . . Note=Nucleophile;Ontology_term=ECO:0000250;evidence=ECO:0000250 P16954 UniProtKB Active site 493 493 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250