protein structures: Pfam structures PDB RCSB PDB ; PDBe PDBsum structure summary In molecular biology, formylglycine-generating sulfatase enzyme is a protein domain which has a structure homologous to the complex alpha/beta topology found in sulfatase-modifying factors ( SUMF1 ). SUMF1 is a paralogue of oxoalanine-generating enzyme, also called C(alpha)-formylglycine generating enzyme