Tags: Enzyme.
In enzymology a protochlorophyllide reductase (EC 1.3.1.33) is an enzyme that catalyzes the chemical reactionprotochlorophyllide + NADPH + H+ chlorophyllide a + NADP+Thus the three substrates of this enzyme are protochlorophyllide NADPH and H+ whereas its 2 products are chlorophyllide a and NADP+ .This enzyme belongs to the family of oxidoreductases specifically those acting on the CH-CH group of donor with NAD+ or NADP+ as acceptor.