ID 1.1.99.32 DE L-sorbose 1-dehydrogenase. AN SDH. CA A + L-sorbopyranose = 1-dehydro-L-sorbose + AH2. CC -!- The product, 1-dehydro-L-sorbose, is an intermediate in bacterial CC 2-keto-L-gulonic-acid formation. CC -!- The activity of this membrane-bound enzyme is stimulated by Fe(III) CC or Co(2+) but is inhibited by Cu(2+). CC -!- Highly specific for L-sorbose as other sugars, such as glucose, CC mannitol and sorbitol, are not substrates. CC -!- Phenazine methosulfate and DCIP can act as artificial acceptors. DR Q47944, SDH_GLUOY ; //