3.5.5.5 2-mercaptoethanol 1.4fold at 50 mM, 1.6fold activation at 100 mM 652959 3.5.5.5 2-mercaptoethanol activation 32502, 32503 3.5.5.5 dithiothreitol activation 32502, 32503 3.5.5.5 additional information expression is induced by growing the strain in the presence of different nitriles and /or complex or inorganic nitrogen sources. The highest nitrile hydrolysing activity is observed with cells grown with 2-cyanopyridine and NaNO3 701254 3.5.5.5 phenylacetonitrile absolutely required as growth nitrogen source substrate for induction of the enzyme, cannot be substituted by ammonia or epsilon-caprolactam 652959 3.5.5.5 Sodium hydrosulfide activation 32503