2.8.1.7	L-cysteine + acceptor = L-alanine + S-sulfanyl-acceptor	enzyme NifS4 is involved in formation of the Mo-S ligand of Moco. It mobilizes sulfur by formation of a protein-bound persulfide intermediate and transfers this sulfur further to Moco. Moco is sulfurated before the insertion into xanthine dehydrogenase, while it is bound to XdhC	672277	
2.8.1.7	L-cysteine + acceptor = L-alanine + S-sulfanyl-acceptor	mechanism	-, 645615, 645619, 645628, 645630, 645631, 645636	
2.8.1.7	L-cysteine + acceptor = L-alanine + S-sulfanyl-acceptor	overall reaction	-	
2.8.1.7	L-cysteine + [enzyme]-cysteine = L-alanine + [enzyme]-S-sulfanylcysteine	(1a)	-	
2.8.1.7	[enzyme]-S-sulfanylcysteine + acceptor = [enzyme]-cysteine + S-sulfanyl-acceptor	(1b)	-