Pheophorbidase

Pheophorbidase (EC 3.1.1.82, phedase, PPD) is an enzyme with systematic name pheophorbide-a hydrolase. It catalyses the following reaction:


 * pheophorbide a + H2O $$\rightleftharpoons$$ pyropheophorbide a + methanol + CO2 (overall reaction)
 * (1a) pheophorbide a + H2O $$\rightleftharpoons$$ C-132-carboxypyropheophorbide a + methanol
 * (1b) C-132-carboxypyropheophorbide a $$\rightleftharpoons$$ pyropheophorbide a + CO2 (spontaneous)

This enzyme participates in the chlorophyll degradation in higher plants and algae.