Gaitanaris GA, Papavassiliou AG, Rubock P, Silverstein SJ, Gottesman ME. Renaturation of denatured lambda repressor requires heat shock proteins.
Cell 1990;
61:1013-20. [PMID:
2140957 DOI:
10.1016/0092-8674(90)90066-n]
[Citation(s) in RCA: 107] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The temperature-sensitive bacteriophage lambda cI857 repressor protein rapidly renatures after thermal inactivation. E. coli mutants in the heat shock protein genes dnaK, dnaJ, and grpE do not efficiently reactivate heat-denatured repressor. Our results suggest that protein refolding is promoted by heat shock proteins and that such a process is the basis of the homeostatic role played by these proteins in the heat shock response.
Collapse