6-trans-leukotriene B4 + NADP(+) = 12-oxo-(5S)-hydroxy-(6E,8E,10E,14Z)-eicosatetraenoate + NADPH + H(+)
6-trans-leukotriene b4 + nadp(+) = 12-oxo-(5s)-hydroxy-(6e,8e,10e,14z)-eicosatetraenoate + nadph + h(+)