ID 1.12.98.3 DE Methanosarcina-phenazine hydrogenase. AN Methanophenazine hydrogenase. AN Methylviologen-reducing hydrogenase. CA H(2) + 2-(2,3-dihydropentaprenyloxy)phenazine = CA 2-dihydropentaprenyloxyphenazine. CF Iron-sulfur; Nickel. CC -!- The enzyme from some sources contains selenocysteine. //