1-octadecanoyl-2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphoethanolamine + L-serine <=> 1-octadecanoyl-2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphoserine + ethanolamine
1-octadecanoyl-2-(5z,8z,11z,14z)-eicosatetraenoyl-sn-glycero-3-phosphoethanolamine + l-serine <=> 1-octadecanoyl-2-(5z,8z,11z,14z)-eicosatetraenoyl-sn-glycero-3-phosphoserine + ethanolamine