##gff-version 3 Q9H7V2 UniProtKB Chain 1 258 . . . ID=PRO_0000135696;Note=Synapse differentiation-inducing gene protein 1 Q9H7V2 UniProtKB Topological domain 1 181 . . . Note=Cytoplasmic;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q9H7V2 UniProtKB Transmembrane 182 202 . . . Note=Helical;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q9H7V2 UniProtKB Topological domain 203 228 . . . Note=Extracellular;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q9H7V2 UniProtKB Intramembrane 229 249 . . . Note=Helical;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q9H7V2 UniProtKB Topological domain 250 258 . . . Note=Extracellular;Ontology_term=ECO:0000255;evidence=ECO:0000255 Q9H7V2 UniProtKB Modified residue 137 137 . . . Note=Phosphoserine;Ontology_term=ECO:0000250;evidence=ECO:0000250|UniProtKB:Q58DZ9 Q9H7V2 UniProtKB Natural variant 54 54 . . . ID=VAR_053733;Note=G->R;Dbxref=dbSNP:rs6083553