##gff-version 3 Q64692 UniProtKB Chain 1 359 . . . ID=PRO_0000149294;Note=CMP-N-acetylneuraminate-poly-alpha-2%2C8-sialyltransferase Q64692 UniProtKB Topological domain 1 7 . . . Note=Cytoplasmic;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Transmembrane 8 20 . . . Note=Helical%3B Signal-anchor for type II membrane protein;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Topological domain 21 359 . . . Note=Lumenal;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Active site 331 331 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Binding site 147 147 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Binding site 170 170 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Binding site 279 279 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Binding site 280 280 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Binding site 281 281 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Binding site 301 301 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Glycosylation 50 50 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Glycosylation 74 74 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Glycosylation 119 119 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Glycosylation 204 204 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Glycosylation 219 219 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q64692 UniProtKB Disulfide bond 142 292 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 Q64692 UniProtKB Disulfide bond 156 356 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173