1.12.98.4	cysteamine	increase of activity	437770	
1.12.98.4	cysteine	increase of activity	437770	
1.12.98.4	GSH	reduced form of glutathione, increase of activity	437770	
1.12.98.4	additional information	all organisms except Spirillum sp. require an external hydrogenase for assay	437770	
1.12.98.4	additional information	no lipophilic quinone, e.g. menaquinone (vitamin K2) involved, cytochrome b, c or covalently bound FAD are no cofactors	437771	
1.12.98.4	anthraquinone-2-sulfonate	activation, in vitro electron donor	437772	
1.12.98.4	GSH	-	437774	
1.12.98.4	additional information	no cytochrome c3, c7 or b involved	437772, 437774	
1.12.98.4	additional information	no quinione, but enzyme complex contains cytochrome c and has two additional cytochromes, probably of b-type	437778, 437780	
1.12.98.4	8-hydroxyquinoline	-	437779