Reaction catalyzed by phospholipase D (3.1.4.4)

2		+			=	2		+
	2 1,2-dioleoyl-sn-glycerophosphocholine	+		tris(hydroxymethyl)-aminomethane	=		2 choline	+		bis(1,2-dioleoyl-sn-glycerophospho)-tris(hydroxymethyl)-aminomethane