Abstract
Escherichia coli trigger factor (TF) and DnaK cooperate in the folding of newly synthesized proteins. The combined deletion of the TF‐encoding tig gene and the dnaK gene causes protein aggregation and synthetic lethality at 30°C. Here we show that the synthetic lethality of ΔtigΔdnaK52 cells is abrogated either by growth below 30°C or by overproduction of GroEL/GroES. At 23°C ΔtigΔdnaK52 cells were viable and showed only minor protein aggregation. Overproduction of GroEL/GroES, but not of other chaperones, restored growth of ΔtigΔdnaK52 cells at 30°C and suppressed protein aggregation including proteins ≥60 kDa, which normally require TF and DnaK for folding. GroEL/GroES thus influences the folding of proteins previously identified as DnaK/TF substrates.
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Dates
Type | When |
---|---|
Created | 21 years, 7 months ago (Jan. 27, 2004, 5:22 a.m.) |
Deposited | 1 year, 11 months ago (Sept. 16, 2023, 10:12 a.m.) |
Indexed | 3 months, 3 weeks ago (May 10, 2025, 2:21 p.m.) |
Issued | 21 years, 7 months ago (Jan. 24, 2004) |
Published | 21 years, 7 months ago (Jan. 24, 2004) |
Published Online | 21 years, 7 months ago (Jan. 24, 2004) |
Published Print | 21 years, 6 months ago (Feb. 13, 2004) |
@article{Vorderw_lbecke_2004, title={Low temperature or GroEL/ES overproduction permits growth of Escherichia coli cells lacking trigger factor and DnaK}, volume={559}, ISSN={1873-3468}, url={http://dx.doi.org/10.1016/s0014-5793(04)00052-3}, DOI={10.1016/s0014-5793(04)00052-3}, number={1–3}, journal={FEBS Letters}, publisher={Wiley}, author={Vorderwülbecke, S and Kramer, G and Merz, F and Kurz, T.A and Rauch, T and Zachmann-Brand, B and Bukau, B and Deuerling, E}, year={2004}, month=jan, pages={181–187} }