3HY8 OXIDOREDUCTASE, FMN BINDING PROTEIN, OXIDASE, DISEASE MUTATION, EPILEPSY, FLAVOPROTEIN, FMN, PHOSPHOPROTEIN, POLYMORPHISM, PYRIDOXAL PHOSPHATE, PYRIDOXINE BIOSYNTHESIS CRYSTAL STRUCTURE OF HUMAN PYRIDOXINE 5'-PHOSPHATE OXIDASE R229W MUTANT