Cited by 48Bacterial Genetics and BiotechnologyRNA and protein synthesis mechanismsRNA Research and Splicing

The structure and function of the gram-positive bacterial RNA degradosome

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Cho, Kyu Hong·2017·Frontiers in Microbiology

Abstract

The RNA degradosome is a highly structured protein complex responsible for bulk RNA decay in bacteria. The main components of the complex, ribonucleases, an RNA helicase, and glycolytic enzymes are well conserved in bacteria. Some components of the degradosome are essential for growth and the disruption of degradosome formation causes slower growth, indicating that this complex is required for proper cellular function. The study of the E. coli degradosome has been performed extensively for the last several decades and has revealed detailed information on its structure and function. On the contrary, the Gram-positive bacterial degradosome, which contains ribonucleases different from the E. coli one, has been studied only recently. Studies on the Gram-positive degradosome revealed that its major component RNase Y was necessary for the full virulence of medically important Gram-positive bacterial pathogens, suggesting that it could be a target of antimicrobial therapy. This review describes the structures and function of Gram-positive bacterial RNA degradosomes, especially those of a Gram-positive model organism Bacillus subtilis, and two important Gram-positive pathogens, Staphylococcus aureus and Streptococcus pyogenes.

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  • The degradosome is a complex consisting of a membrane-bound endoribonuclease scaffold (RNase Y), two metabolic enzymes (enolase and phosphofructokinase), an RNA helicase, a 3′ to 5′ exoribonuclease (RNase R or a putative exoribonuclease), and two 5′ to 3′ exoribonucleases (RNases J1 and J2).

    “The degradosome is a complex that consists of a membrane-bound endoribonuclease scaffold (RNase Y), two metabolic enzymes (enolase and phosphofructokinase), an RNA helicase, a 3′ to 5′ exoribonuclease (RNase R or a putative exoribonuclease), and two 5′ to 3′ exoribonucleases (RNases J1 and J2) (Cho, 2017).”

    From Fundamental behaviors emerge from simulations of a living minimal cell (2022) · cites this paper as Cho, 2017

    Figure 2 and the B. subtilis RNA degradosome section identify RNase Y, enolase, phosphofructokinase, a DEAD-box helicase, and RNases J1 and J2 as components. But they identify PNPase—not RNase R or a putative exoribonuclease—as the degradosome’s 3′–5′ exoribonuclease; the S. aureus section also lists PNPase. (LLM, conf=0.90)

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Authors
Cho, K. H.
Affiliations
Indiana State University (US)
Corresponding author
Cho, Kyu Hong
Venue
Frontiers in Microbiology
Published
2017-02-03
Volume
8
Pages
154-154
ISSN
1664-302X (ISSN-L)
OpenAlex
W2585190114
Cited by
48
References
58
Citations by year
2026: 4 · 2025: 4 · 2024: 1 · 2023: 2 · 2022: 7 · 2021: 6 · 2020: 11 · 2019: 4 · 2018: 5 · 2017: 4
FWCI
0.85
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Microbiology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (7R15 GM101603-02)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
Keywords
RNA degradosome, Gram-positive bacteria, RNase Y, ribonuclease, RNA helicase, glycolytic enzymes, Bacillus subtilis, Staphylococcus aureus, Streptococcus pyogenes, bacterial virulence, antimicrobial drug targets, protein complex structure

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