Reaction catalyzed by pyridinium-3,5-bisthiocarboxylic acid mononucleotide synthase (4.4.1.37)

	[LarE]-S-[5-carboxy-1-(5-O-phosphono-beta-D-ribofuranosyl)pyridin-1-ium-3-carbonyl]-L-cysteine	=		[LarE]-dehydroalanine	+
	[LarE]-S-[5-carboxy-1-(5-O-phosphono-beta-D-ribofuranosyl)pyridin-1-ium-3-carbonyl]-L-cysteine	=		[LarE]-dehydroalanine	+		pyridin-1-ium-3-carboxylate-5-thiocarboxylate mononucleotide