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Title: SpyB, a small heme-binding protein, affects the composition of the cell wall in Streptococcus pyogenes

Abstract

Streptococcus pyogenes (Group A Streptococcus or GAS) is a hemolytic human pathogen associated with a wide variety of infections ranging from minor skin and throat infections to life-threatening invasive diseases. The cell wall of GAS consists of peptidoglycan sacculus decorated with a carbohydrate comprising a polyrhamnose backbone with immunodominant N-acetylglucosamine side-chains. All GAS genomes contain the spyBA operon, which encodes a 35-amino-acid membrane protein SpyB, and a membrane-bound C3-like ADP-ribosyltransferase SpyA. In this study, we addressed the function of SpyB in GAS. Phenotypic analysis of a spyB deletion mutant revealed increased bacterial aggregation, and reduced sensitivity to β-lactams of the cephalosporin class and peptidoglycan hydrolase PlyC. Glycosyl composition analysis of cell wall isolated from the spyB mutant suggested an altered carbohydrate structure compared with the wild-type strain. Furthermore, we found that SpyB associates with heme and protoporphyrin IX. Heme binding induces SpyB dimerization, which involves disulfide bond formation between the subunits. Furthermore, our data suggest the possibility that SpyB activity is regulated by heme.

Authors:
 [1];  [1];  [2];  [3];  [1];  [4];  [4];  [4];  [3];  [3];  [1];  [1];  [2];  [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
  2. The Ohio State Univ., Columbus, OH (United States)
  3. Univ. of Washington, Seattle, WA (United States)
  4. Univ. of Georgia, Athens, GA (United States)
Publication Date:
Research Org.:
Univ. of Georgia, Athens, GA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1365842
Grant/Contract Number:  
FG02-93ER20097
Resource Type:
Accepted Manuscript
Journal Name:
Frontiers in Cellular and Infection Microbiology
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2235-2988
Publisher:
Frontiers Research Foundation
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; 59 BASIC BIOLOGICAL SCIENCES; SpyA; SpyB; heme; ADP-ribosyltransferase; Group A carbohydrate; Streptococcus pyogenes; cell wall

Citation Formats

Edgar, Rebecca J., Chen, Jing, Kant, Sashi, Rechkina, Elena, Rush, Jeffrey S., Forsberg, Lennart S., Jaehrig, Bernhard, Azadi, Parastoo, Tchesnokova, Veronika, Sokurenko, Evgeni V., Zhu, Haining, Korotkov, Konstantin V., Pancholi, Vijay, and Korotkova, Natalia. SpyB, a small heme-binding protein, affects the composition of the cell wall in Streptococcus pyogenes. United States: N. p., 2016. Web. doi:10.3389/fcimb.2016.00126.
Edgar, Rebecca J., Chen, Jing, Kant, Sashi, Rechkina, Elena, Rush, Jeffrey S., Forsberg, Lennart S., Jaehrig, Bernhard, Azadi, Parastoo, Tchesnokova, Veronika, Sokurenko, Evgeni V., Zhu, Haining, Korotkov, Konstantin V., Pancholi, Vijay, & Korotkova, Natalia. SpyB, a small heme-binding protein, affects the composition of the cell wall in Streptococcus pyogenes. United States. https://doi.org/10.3389/fcimb.2016.00126
Edgar, Rebecca J., Chen, Jing, Kant, Sashi, Rechkina, Elena, Rush, Jeffrey S., Forsberg, Lennart S., Jaehrig, Bernhard, Azadi, Parastoo, Tchesnokova, Veronika, Sokurenko, Evgeni V., Zhu, Haining, Korotkov, Konstantin V., Pancholi, Vijay, and Korotkova, Natalia. Thu . "SpyB, a small heme-binding protein, affects the composition of the cell wall in Streptococcus pyogenes". United States. https://doi.org/10.3389/fcimb.2016.00126. https://www.osti.gov/servlets/purl/1365842.
@article{osti_1365842,
title = {SpyB, a small heme-binding protein, affects the composition of the cell wall in Streptococcus pyogenes},
author = {Edgar, Rebecca J. and Chen, Jing and Kant, Sashi and Rechkina, Elena and Rush, Jeffrey S. and Forsberg, Lennart S. and Jaehrig, Bernhard and Azadi, Parastoo and Tchesnokova, Veronika and Sokurenko, Evgeni V. and Zhu, Haining and Korotkov, Konstantin V. and Pancholi, Vijay and Korotkova, Natalia},
abstractNote = {Streptococcus pyogenes (Group A Streptococcus or GAS) is a hemolytic human pathogen associated with a wide variety of infections ranging from minor skin and throat infections to life-threatening invasive diseases. The cell wall of GAS consists of peptidoglycan sacculus decorated with a carbohydrate comprising a polyrhamnose backbone with immunodominant N-acetylglucosamine side-chains. All GAS genomes contain the spyBA operon, which encodes a 35-amino-acid membrane protein SpyB, and a membrane-bound C3-like ADP-ribosyltransferase SpyA. In this study, we addressed the function of SpyB in GAS. Phenotypic analysis of a spyB deletion mutant revealed increased bacterial aggregation, and reduced sensitivity to β-lactams of the cephalosporin class and peptidoglycan hydrolase PlyC. Glycosyl composition analysis of cell wall isolated from the spyB mutant suggested an altered carbohydrate structure compared with the wild-type strain. Furthermore, we found that SpyB associates with heme and protoporphyrin IX. Heme binding induces SpyB dimerization, which involves disulfide bond formation between the subunits. Furthermore, our data suggest the possibility that SpyB activity is regulated by heme.},
doi = {10.3389/fcimb.2016.00126},
journal = {Frontiers in Cellular and Infection Microbiology},
number = ,
volume = 6,
place = {United States},
year = {Thu Oct 13 00:00:00 EDT 2016},
month = {Thu Oct 13 00:00:00 EDT 2016}
}

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Works referenced in this record:

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Identification of SpyA, a novel ADP-ribosyltransferase of Streptococcus pyogenes: Identification of SpyA
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Attenuation of penicillin resistance in a peptidoglycan O-acetyl transferase mutant of Streptococcus pneumoniae
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Role of staphylococcal wall teichoic acid in targeting the major autolysin Atl
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Compensatory Evolution of pbp Mutations Restores the Fitness Cost Imposed by β-Lactam Resistance in Streptococcus pneumoniae
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Two Group A Streptococcal Peptide Pheromones Act through Opposing Rgg Regulators to Control Biofilm Development
journal, August 2011


Assembly of the Type II Secretion System such as Found in Vibrio cholerae Depends on the Novel Pilotin AspS
journal, January 2013


Molecular mechanisms of β-lactam resistance in Streptococcus pneumoniae
journal, March 2012

  • Hakenbeck, Regine; Brückner, Reinhold; Denapaite, Dalia
  • Future Microbiology, Vol. 7, Issue 3
  • DOI: 10.2217/fmb.12.2

The crimson conundrum: heme toxicity and tolerance in GAS
journal, November 2014

  • Sachla, Ankita J.; Le Breton, Yoann; Akhter, Fahmina
  • Frontiers in Cellular and Infection Microbiology, Vol. 4
  • DOI: 10.3389/fcimb.2014.00159

Works referencing / citing this record:

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Genome sequence analysis of emm89 Streptococcus pyogenes strains causing infections in Scotland, 2010–2016
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The molecular mechanism of N-acetylglucosamine side-chain attachment to the Lancefield group A Carbohydrate in Streptococcus pyogenes
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  • Rush, Jeffrey S.; Edgar, Rebecca J.; Deng, Pan
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