1-O-(1Z-alkenyl)-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + 1-hexadecanoyl-sn-glycero-3-phosphocholine => 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + a 1-O-(1Z-alkenyl)-sn-glycero-3-phosphoethanolamine
1-o-(1z-alkenyl)-2-(9z,12z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + 1-hexadecanoyl-sn-glycero-3-phosphocholine => 1-hexadecanoyl-2-(9z,12z-octadecadienoyl)-sn-glycero-3-phosphocholine + a 1-o-(1z-alkenyl)-sn-glycero-3-phosphoethanolamine