a 1-O-(1Z-alkenyl)-2-acyl-sn-glycero-3-phosphoethanolamine + L-serine = 1-O-(1Z-alkenyl)-2-acyl-sn-glycero-3-phospho-L-serine + ethanolamine
a 1-o-(1z-alkenyl)-2-acyl-sn-glycero-3-phosphoethanolamine + l-serine = 1-o-(1z-alkenyl)-2-acyl-sn-glycero-3-phospho-l-serine + ethanolamine