L-thyronine + iodide + A + H(+) <=> 3-iodo-L-thyronine + AH2
l-thyronine + iodide + a + h(+) <=> 3-iodo-l-thyronine + ah2
L-thyronine + iodide + A + H(+) <=> 3-iodo-L-thyronine + AH2
l-thyronine + iodide + a + h(+) <=> 3-iodo-l-thyronine + ah2