Reaction catalyzed by histone acetyltransferase (2.3.1.48)

		+		[histone H3]-L-lysine18	=		CoA	+		[histone H3]-N6-acetyl-L-lysine18
	acetyl-CoA	+		[histone H3]-L-lysine18	=		CoA	+		[histone H3]-N6-acetyl-L-lysine18