Dogfish M4 lactate dehydrogenase: reversible inactivation by pyridoxal 5'-phosphate and complete protection in complexes that mimic the active ternary complex. |
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| Authors: | S S Chen and P C Engel |
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| Abstract: | Dogfish M4 lactate dehydrogenase, like the corresponding pig enzyme, is inactivated by pyridoxal 5'-phosphate through modification of a single essential lysine residue. The activity is completely protected in the complexes E-NAD+-oxalate, E-NADH-oxamate and E-(NAD+-pyruvate adduct), but only partially protected in E-NAD+, E-NADH, E-NAD+-oxamate and E-NADH-oxalate. |
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