The DnaK/ClpB chaperone system from Thermus thermophilus

Schlee, Sandra; Reinstein, Joachim

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The DnaK/ClpB chaperone system from <i>Thermus thermophilus</i>

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Schlee, Sandra
Max Planck Institute of Molecular Physiology, Max Planck Society;

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Reinstein, Joachim
Abt. III: Physikalische Biochemie, Max Planck Institute of Molecular Physiology, Max Planck Society;

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Citation

Schlee, S., & Reinstein, J. (2002). The DnaK/ClpB chaperone system from <i>Thermus thermophilus</i>. Cellular and Molecular Life Sciences, 59(10): 1, pp. 1598-1606. Retrieved from http://www.link.springer.de/link/service/journals/00018/papers/2059010/20591598.pdf.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0014-0DFC-D

Abstract

Proteins of thermophilic organisms are adapted to remain well structured and functional at elevated temperatures. Nevertheless like their 'cousins' that reside at medium temperatures, they require the assistance of molecular chaperones to fold properly and prevent aggregation. This review compares structural and functional properties of the DnaK/ClpB systems of Thermus thermophilus and, mainly, Escherichia coli (DnaK(Tth), and DnaK(Eco)). Many elemental properties of these systems remain conserved. However, in addition to a general increase of the thermal stability of its components, the DnaK(Tth) system shows profound differences in its regulation, and genetic as well as oligomeric organization. Whether these differences are unique or represent general strategies of adaptation to life at elevated temperatures remains to be clarified.