ID 1.10.3.1 DE catechol oxidase. AN diphenol oxidase. AN o-diphenolase. AN phenolase. AN polyphenol oxidase. AN tyrosinase. CA 2 catechol + O2 = 2 1,2-benzoquinone + 2 H2O. CC -!- A type 3 copper protein that catalyzes exclusively the oxidation of CC catechols (i.e., o-diphenols) to the corresponding o-quinones. CC -!- The enzyme also acts on a variety of substituted catechols. CC -!- It is different from tyrosinase, EC 1.14.18.1, which can catalyze CC both the monooxygenation of monophenols and the oxidation of CC catechols. DR Q9ZP19, PPO1_IPOBA ; Q9MB14, PPO2_IPOBA ; Q08303, PPOA_SOLLC ; DR Q08304, PPOB_SOLLC ; Q06355, PPOB_SOLTU ; Q08305, PPOC_SOLLC ; DR Q08306, PPOD_SOLLC ; Q08307, PPOE_SOLLC ; Q08296, PPOF_SOLLC ; DR P43309, PPO_MALDO ; O81103, PPO_PRUAR ; P43310, PPO_SPIOL ; DR Q06215, PPO_VICFA ; P43311, PPO_VITVI ; P85026, PPO_ZINOF ; //