1.14.99.57 additional information MhuD catalysis does not generate CO. MhuD cleaves heme at the alpha-meso position but retains the meso-carbon atom at the cleavage site. The tetrapyrrole product of MhuD, mycobilin, has an aldehyde group at the cleavage site and a carbonyl group at either the beta-meso or the delta-meso position. MhuD catalysis does not involve verdoheme Mycobacterium tuberculosis ? - ? 89 1.14.99.57 additional information MhuD catalysis does not generate CO. MhuD cleaves heme at the alpha-meso position but retains the meso-carbon atom at the cleavage site. The tetrapyrrole product of MhuD, mycobilin, has an aldehyde group at the cleavage site and a carbonyl group at either the beta-meso or the delta-meso position. MhuD catalysis does not involve verdoheme Mycobacterium tuberculosis H37Rv ? - ? 89 1.14.99.57 protoheme + 3 reduced acceptor + 3 O2 - Mycobacterium tuberculosis mycobilin a + Fe2+ + 3 acceptor + 3 H2O - ? 438431 1.14.99.57 protoheme + 3 reduced acceptor + 3 O2 - Mycobacterium tuberculosis H37Rv mycobilin a + Fe2+ + 3 acceptor + 3 H2O - ? 438431 1.14.99.57 protoheme + 3 reduced acceptor + 3 O2 - Mycobacterium tuberculosis mycobilin b + Fe2+ + 3 acceptor + 3 H2O - ? 438432 1.14.99.57 protoheme + 3 reduced acceptor + 3 O2 - Mycobacterium tuberculosis H37Rv mycobilin b + Fe2+ + 3 acceptor + 3 H2O - ? 438432