4.4.1.36	2-(hydroxysulfanyl)hercynine + reduced acceptor = ergothioneine + acceptor + H2O	(1b), spontaneous	-	
4.4.1.36	S-(hercyn-2-yl)-L-cysteine S-oxide + H2O = 2-(hydroxysulfanyl)hercynine + pyruvate + NH3	(1a)	-	
4.4.1.36	S-(hercyn-2-yl)-L-cysteine S-oxide + reduced acceptor = ergothioneine + pyruvate + NH3 + acceptor	overall reaction	-