Reaction catalyzed by N6-L-threonylcarbamoyladenine synthase (2.3.1.234)

		+		adenine37 in tRNA	=		AMP	+
	L-threonylcarbamoyladenylate	+		adenine37 in tRNA	=		AMP	+		N6-L-threonylcarbamoyladenine37 in tRNA