(12S)-hydroperoxy-(5Z,8Z,10E,14Z)-eicosatetraenoate + 2 glutathione <=> (12S)-hydroxy-(5Z,8Z,10E,14Z)-eicosatetraenoate + glutathione disulfide + H2O
(12s)-hydroperoxy-(5z,8z,10e,14z)-eicosatetraenoate + 2 glutathione <=> (12s)-hydroxy-(5z,8z,10e,14z)-eicosatetraenoate + glutathione disulfide + h2o