1-octadecanoyl-2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphoethanolamine + O2 <=> 1-octadecanoyl-2-(15-hydroperoxy-5Z,8Z,11Z,13E-eicosatetraenoyl)-sn-glycero-3-phosphoethanolamine
1-octadecanoyl-2-(5z,8z,11z,14z)-eicosatetraenoyl-sn-glycero-3-phosphoethanolamine + o2 <=> 1-octadecanoyl-2-(15-hydroperoxy-5z,8z,11z,13e-eicosatetraenoyl)-sn-glycero-3-phosphoethanolamine