(15S)-hydroxy-(11Z,13E)-eicosadienoate + glutathione disulfide + H2O => (15S)-hydroperoxy-(11Z,13E)-eicosadienoate + 2 glutathione
(15s)-hydroxy-(11z,13e)-eicosadienoate + glutathione disulfide + h2o => (15s)-hydroperoxy-(11z,13e)-eicosadienoate + 2 glutathione