1.4.3.5 6 10 pyridoxine phosphate oxidase activity 391903 1.4.3.5 6.5 10 pyridoxamine phosphate oxidase activity is absent at pH 6.0, rises sharply from pH 6.0 to 8.5 and remains constantly high between pH 8.5 and 10.0 391903 1.4.3.5 7 10.5 - 712164