Reaction catalyzed by thiamine pyridinylase (2.5.1.2)

		+			=			+
	thiamine	+		4-nitrothiophenolate	=		4-methyl-5-(2-hydroxyethyl)thiazole	+		2-methyl-5[[(4-nitrophenyl)sulfanyl]methyl]pyrimidin-4-amine