Lactate dehydrogenase from the hyperthermophilic bacterium thermotoga maritima: the crystal structure at 2.1 A resolution reveals strategies for intrinsic protein stabilization.
L(+)-Lactate dehydrogenase (LDH) catalyzes the last step in anaerobic glycolysis, the conversion of pyruvate to lactate, with the concomitant oxidation of NADH. Extensive physicochemical and structural investigations of LDHs from both mesophilic and thermophilic organisms have been undertaken in order to study the temperature adaptation of proteins ...
L(+)-Lactate dehydrogenase (LDH) catalyzes the last step in anaerobic glycolysis, the conversion of pyruvate to lactate, with the concomitant oxidation of NADH. Extensive physicochemical and structural investigations of LDHs from both mesophilic and thermophilic organisms have been undertaken in order to study the temperature adaptation of proteins. In this study we aimed to determine the high-resolution structure of LDH from the hyperthermophilic bacterium Thermotoga maritima (TmLDH), the most thermostable LDH to be isolated so far. It was hoped that the structure of TmLDH would serve as a model system to reveal strategies of protein stabilization at temperatures near the boiling point of water.
Related Citations:
Extremely Thermostable L(+)-Lactate Dehydrogenase from Thermotoga Maritima: Cloning, Characterization, and Crystallization of the Recombinant Enzyme in its Tetrameric and Octameric State Ostendorp, R., Auerbach, G., Jaenicke, R. (1996) Protein Sci 5: 862
Organizational Affiliation:
Max-Planck-Institut für Biochemie Abt. Strukturforschung, 82152, Martinsried, Germany. auerbach@biochem.mpg.de
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