ID 1.13.11.46 DE 4-hydroxymandelate synthase. AN 4-hydroxyphenylpyruvate dioxygenase II. CA 4-hydroxyphenylpyruvate + O(2) = 4-hydroxymandelate + CO(2). CF Iron. CC -!- Involved in the biosynthesis of the vancomycin group of glycopeptide CC antibiotics. //