ID 1.1.98.5 DE secondary-alcohol dehydrogenase (coenzyme-F420). AN F420-dependent alcohol dehydrogenase. AN F420-dependent secondary alcohol dehydrogenase. CA a secondary alcohol + H(+) + oxidized coenzyme F420-(gamma-L-Glu)(n) = CA a ketone + reduced coenzyme F420-(gamma-L-Glu)(n). CC -!- The enzyme isolated from the methanogenic archaea Methanogenium CC liminatans catalyzes the reversible oxidation of various secondary CC and cyclic alcohols to the corresponding ketones. //