3-iodothyronamine + iodide + A + H(+) => 3,3'-diiodothyronamine + AH2
3-iodothyronamine + iodide + a + h(+) => 3,3'-diiodothyronamine + ah2
3-iodothyronamine + iodide + A + H(+) => 3,3'-diiodothyronamine + AH2
3-iodothyronamine + iodide + a + h(+) => 3,3'-diiodothyronamine + ah2