ID 2.3.1.208 DE 4-hydroxycoumarin synthase. CA 2-hydroxybenzoyl-CoA + malonyl-CoA = 4-hydroxycoumarin + CO2 + 2 CoA. CC -!- The enzyme, a polyketide synthase, can also accept benzoyl-CoA as CC substrate, which it condenses with 3 malonyl-CoA molecules to form CC 3,5-dihydroxybiphenyl (cf. EC 2.3.1.177). DR D2DRC4, BIPS2_SORAU; D2DRC5, BIPS3_SORAU; //