Reaction catalyzed by sphingosine N-acyltransferase (2.3.1.24), very-long-chain ceramide synthase (2.3.1.297), ultra-long-chain ceramide synthase (2.3.1.298)

		+			=			+		CoA
	sphingosine	+		eicosanoyl-CoA	=		N-eicosanoylsphingosine	+		CoA