Thermostability and thermoactivity of citrate synthases from the thermophilic and hyperthermophilic archaea, Thermoplasma acidophilum and Pyrococcus furiosus.

Abstract excerpt

Citrate synthases from Thermoplasma acidophilum (optimal growth at 55 degrees C) and Pyrococcus furiosus (100 degrees C) are homo-dimeric enzymes that show a high degree of structural homology with each other, and thermostabilities commensurate with the environmental temperatures in which their host cells are found. A comparison of their atomic structures with citrate synthases from mesophilic and psychrophilic...

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