##gff-version 3 P61642 UniProtKB Chain 1 356 . . . ID=PRO_0000149284;Note=Alpha-N-acetylneuraminide alpha-2%2C8-sialyltransferase P61642 UniProtKB Topological domain 1 29 . . . Note=Cytoplasmic;Ontology_term=ECO:0000255;evidence=ECO:0000255 P61642 UniProtKB Transmembrane 30 48 . . . Note=Helical%3B Signal-anchor for type II membrane protein;Ontology_term=ECO:0000255;evidence=ECO:0000255 P61642 UniProtKB Topological domain 49 356 . . . Note=Lumenal;Ontology_term=ECO:0000255;evidence=ECO:0000255 P61642 UniProtKB Active site 322 322 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Binding site 143 143 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Binding site 166 166 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Binding site 274 274 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Binding site 275 275 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Binding site 276 276 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Binding site 296 296 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Binding site 310 310 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Glycosylation 71 71 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 P61642 UniProtKB Glycosylation 119 119 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 P61642 UniProtKB Glycosylation 214 214 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 P61642 UniProtKB Glycosylation 245 245 . . . Note=N-linked (GlcNAc...) asparagine;Ontology_term=ECO:0000255;evidence=ECO:0000255 P61642 UniProtKB Disulfide bond 138 287 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173 P61642 UniProtKB Disulfide bond 152 347 . . . Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:O43173