ID 1.21.1.1 DE iodotyrosine deiodinase. AN iodotyrosine dehalogenase 1. CA 2 iodide + L-tyrosine + 2 NADP(+) = 3,5-diiodo-L-tyrosine + H(+) + CA 2 NADPH. CC -!- The enzyme activity has only been demonstrated in the direction of CC 3-deiodination. CC -!- Formerly EC 1.22.1.1. DR Q6PHW0, IYD1_HUMAN ; Q9DCX8, IYD1_MOUSE ; Q6TA49, IYD1_PIG ; DR Q5REW1, IYD1_PONAB ; Q5BK17, IYD1_RAT ; E7FDV5, IYD_DANRE ; DR E9FR69, IYD_DAPPU ; E1JIB2, IYD_DROME ; F4KU78, IYD_HALH1 ; DR T2MBC4, IYD_HYDVU ; A7S5D9, IYD_NEMVE ; B9K712, IYD_THENN ; //