Reaction catalyzed by arginyltransferase (2.3.2.8)

		+		Asp-beta-galactosidase	=			+		L-arginyl-Asp-beta-galactosidase
	L-arginyl-tRNAArg	+		Asp-beta-galactosidase	=		tRNAArg	+		L-arginyl-Asp-beta-galactosidase