DOI: 10.1073/pnas.0610491104. RNaseE and the other constituents of the RNA degradosome are components of the bacterial cytoskeleton

RNaseE and the other constituents of the RNA degradosome are components of the bacterial cytoskeleton

10.1073/pnas.0610491104

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

RNaseE is the main component of the RNA degradosome of Escherichia coli , which plays an essential role in RNA processing and decay. Localization studies showed that RNaseE and the other known degradosome components (RNA helicase B, polynucleotide phosphorylase, and enolase) are organized as helical filamentous structures that coil around the length of the cell. These resemble the helical structures formed by the MreB and MinD cytoskeletal proteins. Formation of the RNaseE cytoskeletal-like structure requires an internal domain of the protein that does not include the domains required for any of its known interactions or the minimal domain required for endonuclease activity. We conclude that the constituents of the RNA degradosome are components of the E. coli cytoskeleton, either assembled as a primary cytoskeletal structure or secondarily associated with another underlying cytoskeletal element. This suggests a previously unrecognized role for the bacterial cytoskeleton, providing a mechanism to compartmentalize proteins that act on cytoplasmic components, as exemplified by the RNA processing and degradative activities of the degradosome, to regulate their access to important cellular substrates.

Bibliography

Taghbalout, A., & Rothfield, L. (2007). RNaseE and the other constituents of the RNA degradosome are components of the bacterial cytoskeleton. Proceedings of the National Academy of Sciences, 104(5), 1667â1672.

Authors 2

Aziz Taghbalout (first)
Lawrence Rothfield (additional)

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Dates

Type	When
Created	18 years, 7 months ago (Jan. 22, 2007, 8:58 p.m.)
Deposited	3 years, 4 months ago (April 12, 2022, 2:45 p.m.)
Indexed	4 months, 4 weeks ago (April 2, 2025, 8:02 p.m.)
Issued	18 years, 7 months ago (Jan. 30, 2007)
Published	18 years, 7 months ago (Jan. 30, 2007)
Published Online	18 years, 7 months ago (Jan. 30, 2007)
Published Print	18 years, 7 months ago (Jan. 30, 2007)

Funders 0

None

BibTeX

@article{Taghbalout_2007, title={RNaseE and the other constituents of the RNA degradosome are components of the bacterial cytoskeleton}, volume={104}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.0610491104}, DOI={10.1073/pnas.0610491104}, number={5}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Taghbalout, Aziz and Rothfield, Lawrence}, year={2007}, month=jan, pages={1667–1672} }

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