a 1-O-alkyl-2-acyl-sn-glycero-3-phosphocholine + a 1-O-(1Z-alkenyl)-sn-glycero-3-phosphoethanolamine = a 1-O-(1Z-alkenyl)-2-acyl-sn-glycero-3-phosphoethanolamine + a 1-O-alkyl-sn-glycero-3-phosphocholine — reaction