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Title: An interbacterial NAD(P)+ glycohydrolase toxin requires elongation factor Tu for delivery to target cells

Journal Article · · Cell
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [4];  [3];  [3];  [2];  [5]
  1. Univ. of Washington, Seattle, WA (United States)
  2. Max Planck Institute of Molecular Physiology, Dortmund (Germany)
  3. Univ. of Maryland, Baltimore, MD (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Univ. of Washington, Seattle, WA (United States); Howard Hughes Medical Institute, Seattle, WA (United States)

Type VI secretion (T6S) influences the composition of microbial communities by catalyzing the delivery of toxins between adjacent bacterial cells. Here, we demonstrate that a T6S integral membrane toxin from Pseudomonas aeruginosa, Tse6, acts on target cells by degrading the universally essential dinucleotides NAD+ and NADP+. Structural analyses of Tse6 show that it resembles mono-ADP-ribosyltransferase proteins, such as diphtheria toxin, with the exception of a unique loop that both excludes proteinaceous ADP-ribose acceptors and contributes to hydrolysis. We find that entry of Tse6 into target cells requires its binding to an essential housekeeping protein, translation elongation factor Tu (EF-Tu). These proteins participate in a larger assembly that additionally directs toxin export and provides chaperone activity. Lastly, visualization of this complex by electron microscopy defines the architecture of a toxin-loaded T6S apparatus and provides mechanistic insight into intercellular membrane protein delivery between bacteria.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1340347
Report Number(s):
BNL-112066-2016-JA
Journal Information:
Cell, Vol. 163, Issue 3; ISSN 0092-8674
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 145 works
Citation information provided by
Web of Science

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Killing with proficiency: Integrated post-translational regulation of an offensive Type VI secretion system journal July 2018
Pseudomonas aeruginosa core metabolism exerts a widespread growth-independent control on virulence journal June 2020
The Type VI Secretion System: A Dynamic System for Bacterial Communication? journal July 2017
Manipulating the type VI secretion system spike to shuttle passenger proteins journal February 2020
Expression of the Arabidopsis thaliana immune receptor EFR in Medicago truncatula reduces infection by a root pathogenic bacterium, but not nitrogen-fixing rhizobial symbiosis journal September 2018
Vibrio cholerae type 6 secretion system effector trafficking in target bacterial cells journal August 2017
Cyclic di‐GMP inactivates T6SS and T4SS activity in Agrobacterium tumefaciens journal June 2019
Expression of the Arabidopsis thaliana immune receptor EFR in Medicago truncatula reduces infection by a root pathogenic bacterium, but not nitrogen‐fixing rhizobial symbiosis text January 2019
The tuberculosis necrotizing toxin is an NAD+ and NADP+ glycohydrolase with distinct enzymatic properties text January 2019
"RETRACTED ARTICLE: Vibrio parahaemolyticus RhsP represents a widespread group of pro-effectors for type VI secretion systems journal September 2018
VgrG and PAAR Proteins Define Distinct Versions of a Functional Type VI Secretion System journal June 2016
Structure-Based Prototype Peptides Targeting the Pseudomonas aeruginosa Type VI Secretion System Effector as a Novel Antibacterial Strategy journal September 2017
Diverse NADase effector families mediate interbacterial antagonism via the type VI secretion system journal December 2017
A modular effector with a DNase domain and a marker for T6SS substrates journal August 2019
Mechanism of loading and translocation of type VI secretion system effector Tse6 journal September 2018
Conditional toxicity and synergy drive diversity among antibacterial effectors journal February 2018
Multifaceted Interfaces of Bacterial Competition journal May 2016
Pseudomonas aeruginosa core metabolism exerts a widespread growth-independent control on virulence journal November 2019
Electron cryomicroscopy as a powerful tool in biomedical research journal May 2018
Confirmed and Potential Roles of Bacterial T6SSs in the Intestinal Ecosystem journal June 2019
Diversity of phytobeneficial traits revealed by whole-genome analysis of worldwide-isolated phenazine-producing Pseudomonas spp.: Genomic diversity of Phz+ Pseudomonas spp. journal December 2018
Effector–Immunity Pairs Provide the T6SS Nanomachine its Offensive and Defensive Capabilities journal April 2018
Biofilms 2015: Multidisciplinary Approaches Shed Light into Microbial Life on Surfaces journal March 2016
Mechanism of action of the moonlighting protein EfTu as a Substance P sensor in Bacillus cereus journal February 2019
Francisella requires dynamic type VI secretion system and ClpB to deliver effectors for phagosomal escape journal June 2017
Identification of Escherichia coli ClpAP in regulating susceptibility to type VI secretion system-mediated attack by Agrobacterium tumefaciens posted_content August 2019
Contact‐dependent growth inhibition induces high levels of antibiotic‐tolerant persister cells in clonal bacterial populations journal March 2018
PAAR proteins act as the ‘sorting hat’ of the type VI secretion system journal November 2019
An insider's perspective: Bacteroides as a window into the microbiome journal April 2017
The Pseudomonas aeruginosa T6SS-VgrG1b spike is topped by a PAAR protein eliciting DNA damage to bacterial competitors journal November 2018
The Diverse Functional Roles of Elongation Factor Tu (EF-Tu) in Microbial Pathogenesis journal October 2019
The Helicobacter pylori cell shape promoting protein Csd5 interacts with the cell wall, MurF, and the bacterial cytoskeleton journal September 2018
Delivery of the Pseudomonas aeruginosa Phospholipase Effectors PldA and PldB in a VgrG- and H2-T6SS-Dependent Manner journal July 2019
Inferring joint sequence-structural determinants of protein functional specificity journal January 2018
A Proposed Chaperone of the Bacterial Type VI Secretion System Functions To Constrain a Self-Identity Protein journal March 2018
The T6SSs of Pseudomonas aeruginosa Strain PAO1 and Their Effectors: Beyond Bacterial-Cell Targeting journal June 2016
The tuberculosis necrotizing toxin is an NAD+ and NADP+ glycohydrolase with distinct enzymatic properties journal March 2019
Activity, delivery, and diversity of Type VI secretion effectors journal December 2020
Turncoat Polypeptides: We Adapt to Our Environment journal October 2019
A type VI secretion system effector delivery mechanism dependent on PAAR and a chaperone–co-chaperone complex journal April 2018
Substrate recognition by the Pseudomonas aeruginosa EF-Tu–modifying methyltransferase EftM journal November 2019
The Type VI secretion system: a versatile bacterial weapon journal May 2019
Interbacterial mechanisms of colonization resistance and the strategies pathogens use to overcome them journal July 2018
Bacterial antagonism in host-associated microbial communities journal September 2018
Structural basis for loading and inhibition of a bacterial T6 SS phospholipase effector by the VgrG spike journal April 2020
A phospholipase A 1 antibacterial Type VI secretion effector interacts directly with the C-terminal domain of the VgrG spike protein for delivery: Phospholipase A 1 antibacterial T6SS effector journal February 2016
Bacteroides fragilis type VI secretion systems use novel effector and immunity proteins to antagonize human gut Bacteroidales species journal March 2016
Type VI secretion system: a modular toolkit for bacterial dominance journal November 2019
PAAR‐Rhs proteins harbor various C‐terminal toxins to diversify the antibacterial pathways of type VI secretion systems journal December 2016
Type VI Secretion Effectors: Methodologies and Biology journal June 2017
A High-Throughput Interbacterial Competition Screen Identifies ClpAP in Enhancing Recipient Susceptibility to Type VI Secretion System-Mediated Attack by Agrobacterium tumefaciens journal February 2020
The RES domain toxins of RES-Xre toxin-antitoxin modules induce cell stasis by degrading NAD +: The RES toxin degrades intracellular NAD+ journal November 2018
The opportunistic pathogen Stenotrophomonas maltophilia utilizes a type IV secretion system for interbacterial killing journal February 2019
Discovery of a Pseudomonas aeruginosa Type VI secretion system toxin targeting bacterial protein synthesis using a global genomics approach posted_content August 2019
A proposed chaperone of the bacterial type VI secretion system functions to constrain a self-identity protein journal November 2017
A Type VI Secretion System Trans-Kingdom Effector Is Required for the Delivery of a Novel Antibacterial Toxin in Pseudomonas aeruginosa journal June 2019
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Type VI secretion system MIX‐effectors carry both antibacterial and anti‐eukaryotic activities journal September 2017
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Causalities of war: The connection between type VI secretion system and microbiota journal January 2020
The tuberculosis necrotizing toxin is an NAD+ and NADP+ glycohydrolase with distinct enzymatic properties text January 2019

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