Reaction catalyzed by UDP-4-amino-4,6-dideoxy-N-acetyl-beta-L-altrosamine N-acetyltransferase (2.3.1.202)

		+			=		CoA	+
	acetyl-CoA	+		UDP-4-amino-4,6-dideoxy-N-acetyl-beta-L-altrosamine	=		CoA	+		UDP-2,4-diacetamido-2,4,6-trideoxy-beta-L-altropyranose