1.14.13.160 metabolism the enzyme catalyzes a step in the (+)-camphor catabolism. Metabolism of the first ring cleavage intermediate, 2-oxo-DELTA3-4,5,5-trimethylcyclopentenylacetic acid, occurs through the sequential action of two inducible enzymes, a coenzyme A ester synthetase, EC 6.2.1.38, and the monooxygenase -, 717711