Cited by 35Bacterial Genetics and BiotechnologyClostridium difficile and Clostridium perfringens researchBiochemical and Structural Characterization

Characterization of Acp, a Peptidoglycan Hydrolase of Clostridium perfringens with N -Acetylglucosaminidase Activity That Is Implicated in Cell Separation and Stress-Induced Autolysis

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Camiade, Emilie, Peltier, Johann, Bourgeois, Ingrid, Couture-Tosi, Evelyne, Courtin, Pascal, Antunes, Ana, Chapot-Chartier, Marie-Pierre, Dupuy, Bruno +1 more·2010·Journal of Bacteriology

Abstract

This work reports the characterization of the first known peptidoglycan hydrolase (Acp) produced mainly during vegetative growth of Clostridium perfringens. Acp has a modular structure with three domains: a signal peptide domain, an N-terminal domain with repeated sequences, and a C-terminal catalytic domain. The purified recombinant catalytic domain of Acp displayed lytic activity on the cell walls of several Gram-positive bacterial species. Its hydrolytic specificity was established by analyzing the Bacillus subtilis peptidoglycan digestion products by coupling reverse phase-high-pressure liquid chromatography (RP-HPLC) and matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) analysis, which displayed an N-acetylglucosaminidase activity. The study of acp expression showed a constant expression during growth, which suggested an important role of Acp in growth of C. perfringens. Furthermore, cell fractionation and indirect immunofluorescence staining using anti-Acp antibodies revealed that Acp is located at the septal peptidoglycan of vegetative cells during exponential growth phase, indicating a role in cell separation or division of C. perfringens. A knockout acp mutant strain was obtained by using the insertion of mobile group II intron strategy (ClosTron). The microscopic examination indicated a lack of vegetative cell separation in the acp mutant strain, as well as the wild-type strain incubated with anti-Acp antibodies, demonstrating the critical role of Acp in cell separation. The comparative responses of wild-type and acp mutant strains to stresses induced by Triton X-100, bile salts, and vancomycin revealed an implication of Acp in autolysis induced by these stresses. Overall, Acp appears as a major cell wall N-acetylglucosaminidase implicated in both vegetative growth and stress-induced autolysis.

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  1. [3]Bateman, A., and M. Bycroft. 2000. The structure of a LysM domain from E. coli membrane-bound lytic murein transglycosylase D (MltD). J. Mol. Biol. 299:1113-1119. [DOI] [PubMed] [Google Scholar]
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Authors
Camiade, E., Peltier, J., Bourgeois, I., Couture-Tosi, E., Courtin, P., Antunes, A., Chapot-Chartier, M.-P., Dupuy, B., & Pons, J.-L.
Affiliations
  • Laboratoire G.R.A.M., EA 2656 IFR 23, Rouen University Hospital, University of Rouen, 22 Boulevard Gambetta, 76183 Rouen Cedex, France
  • Université de Rouen Normandie (FR)
  • Unité des Toxines et Pathogénie Bactérienne, Institut Pasteur, 25 Rue du Docteur Roux, 75015 Paris, France
  • Microbiologie de l’alimentation au service de la santé (FR)
  • Institut Pasteur (FR)
  • INRA UMR1319 Micalis, Domaine de Vilvert, F-78352 Jouy-en-Josas, France
Corresponding author
Pons, Jean-Louis
Venue
Journal of Bacteriology
Published
2010-05
Volume
192
Issue
9
Pages
2373-2384
ISSN
  • 0021-9193 (ISSN-L)
  • 1098-5530
OpenAlex
W2144948701
Cited by
35
References
60
Citations by year
2026: 1 · 2025: 2 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 1 · 2018: 1 · 2017: 1 · 2016: 3 · 2015: 1 · 2014: 5 · 2013: 3 · 2012: 4
FWCI
2.16
Type
journal article
Language
en
Open access
Locations
  • Journal of Bacteriology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
U.S. Public Health Service (A1057637)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Health Sciences › Medicine › Infectious Diseases › Clostridium difficile and Clostridium perfringens research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Structural Characterization
Keywords
ACP, peptidoglycan hydrolase, Clostridium perfringens, N-acetyl-beta-D-glucosaminidase, cell isolation, cell division, cell wall degradation, bile salts, vancomycin, Gram-positive cell wall, modular protein structure
MeSH terms
Acetylglucosaminidase, Anti-Bacterial Agents, Bacterial Proteins, Bacteriolysis, Chromatography, High Pressure Liquid, Clostridium perfringens, Electrophoresis, Polyacrylamide Gel, Microbial Sensitivity Tests, Molecular Sequence Data, N-Acetylmuramoyl-L-alanine Amidase, Peptidoglycan, Blotting, Western, Mutagenesis, Genome, Bacterial, Octoxynol, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Reverse Transcriptase Polymerase Chain Reaction

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