ID 1.14.15.4 DE Steroid 11-beta-monooxygenase. AN Cytochrome p450 XIB1. AN Steroid 11-beta-hydroxylase. AN Steroid 11-beta/18-hydroxylase. CA A steroid + 2 reduced adrenodoxin + O(2) + 2 H(+) = an 11-beta- CA hydroxysteroid + 2 oxidized adrenodoxin + H(2)O. CF Heme-thiolate. CC -!- Also hydroxylates steroids at the 18-position, and converts CC 18-hydroxycorticosterone into aldosterone. CC -!- Formerly EC 1.14.1.6 and EC 1.99.1.7. PR PROSITE; PDOC00081; DR P15150, C11B1_BOVIN; Q64408, C11B1_CAVPO; P15538, C11B1_HUMAN; DR P97720, C11B1_MESAU; Q29527, C11B1_PAPHU; Q29552, C11B1_PIG ; DR P15393, C11B1_RAT ; P51663, C11B1_SHEEP; P19099, C11B2_HUMAN; DR Q64658, C11B2_MESAU; P15539, C11B2_MOUSE; P30099, C11B2_RAT ; DR P30100, C11B3_RAT ; Q92104, CP11B_LITCT; //