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Autoinducer-2-regulated genes in Streptococcus mutans UA159 and global metabolic effect of the luxS mutation

(2008) JOURNAL OF BACTERIOLOGY. 190(1). p.401-415
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Abstract
Autoinducer 2 (AI-2) is the only species-nonspecific autoinducer known in bacteria and is produced by both gram-negative and gram-positive organisms. Consequently, it is proposed to function as a universal quorum-sensing signal for interaction between bacterial species. AI-2 is produced as the by-product of a metabolic transformation carried out by the LuxS enzyme. To separate the metabolic function of the LuxS enzyme from the signaling role of AI-2, we carried out a global transcriptome analysis of a luxS null mutant culture of Streptococcus mutans UA159, an important cariogenic bacterium and a crucial component of the dental plaque biofilm community, in comparison to a luxS null mutant culture supplemented with chemically pure 4,5-dihydroxy-2,3-pentanedione, the precursor of AI-2. The data revealed fundamental changes in gene expression affecting 585 genes (30% of the genome) which could not be restored by the signal molecule AI-2 and are therefore not caused by quorum sensing but by lack of the transformation carried out by the LuxS enzyme in the activated methyl cycle. All functional classes of enzymes were affected, including genes known to be important for biofilm formation, bacteriocin synthesis, competence, and acid tolerance. At the same time, 59 genes were identified whose transcription clearly responded to the addition of AI-2. Some of them were related to protein synthesis, stress, and cell division. Three membrane transport proteins were upregulated which are not related to any of the known AI-2 transporters. Three transcription factors were identified whose transcription was stimulated repeatedly by AI-2 addition during growth. Finally, a global regulatory protein, the 8 subunit of the RNA polymerase (rpoE), was induced 147-fold by AI-2, representing the largest differential gene expression observed. The data show that many phenotypes related to the luxS mutation cannot be ascribed to quorum sensing and have identified for the first time regulatory proteins potentially mediating AI-2-based signaling in gram-positive bacteria.
Keywords
ENTEROHEMORRHAGIC ESCHERICHIA-COLI, QUORUM-SENSING SIGNAL, OXIDATIVE STRESS TOLERANCE, GORDONII BIOFILM FORMATION, COMPETENCE DEVELOPMENT, RNA-POLYMERASE, TRANSCRIPTIONAL REGULATORS, SALMONELLA-TYPHIMURIUM, BACTERIOCIN PRODUCTION, BACILLUS-SUBTILIS

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MLA
Sztajer, Helena, André Lemme, Ramiro Vilchez Vargas, et al. “Autoinducer-2-regulated Genes in Streptococcus Mutans UA159 and Global Metabolic Effect of the luxS Mutation.” JOURNAL OF BACTERIOLOGY 190.1 (2008): 401–415. Print.
APA
Sztajer, H., Lemme, A., Vilchez Vargas, R., Schulz, S., Geffers, R., Yip, C. Y. Y., Levesque, C. M., et al. (2008). Autoinducer-2-regulated genes in Streptococcus mutans UA159 and global metabolic effect of the luxS mutation. JOURNAL OF BACTERIOLOGY, 190(1), 401–415.
Chicago author-date
Sztajer, Helena, André Lemme, Ramiro Vilchez Vargas, Stefan Schulz, Robert Geffers, Cindy Ying Yin Yip, Celine M Levesque, Dennis G Cvitkovitch, and Irene Wagner-Döbler. 2008. “Autoinducer-2-regulated Genes in Streptococcus Mutans UA159 and Global Metabolic Effect of the luxS Mutation.” Journal of Bacteriology 190 (1): 401–415.
Chicago author-date (all authors)
Sztajer, Helena, André Lemme, Ramiro Vilchez Vargas, Stefan Schulz, Robert Geffers, Cindy Ying Yin Yip, Celine M Levesque, Dennis G Cvitkovitch, and Irene Wagner-Döbler. 2008. “Autoinducer-2-regulated Genes in Streptococcus Mutans UA159 and Global Metabolic Effect of the luxS Mutation.” Journal of Bacteriology 190 (1): 401–415.
Vancouver
1.
Sztajer H, Lemme A, Vilchez Vargas R, Schulz S, Geffers R, Yip CYY, et al. Autoinducer-2-regulated genes in Streptococcus mutans UA159 and global metabolic effect of the luxS mutation. JOURNAL OF BACTERIOLOGY. 2008;190(1):401–15.
IEEE
[1]
H. Sztajer et al., “Autoinducer-2-regulated genes in Streptococcus mutans UA159 and global metabolic effect of the luxS mutation,” JOURNAL OF BACTERIOLOGY, vol. 190, no. 1, pp. 401–415, 2008.
@article{4421177,
  abstract     = {{Autoinducer 2 (AI-2) is the only species-nonspecific autoinducer known in bacteria and is produced by both gram-negative and gram-positive organisms. Consequently, it is proposed to function as a universal quorum-sensing signal for interaction between bacterial species. AI-2 is produced as the by-product of a metabolic transformation carried out by the LuxS enzyme. To separate the metabolic function of the LuxS enzyme from the signaling role of AI-2, we carried out a global transcriptome analysis of a luxS null mutant culture of Streptococcus mutans UA159, an important cariogenic bacterium and a crucial component of the dental plaque biofilm community, in comparison to a luxS null mutant culture supplemented with chemically pure 4,5-dihydroxy-2,3-pentanedione, the precursor of AI-2. The data revealed fundamental changes in gene expression affecting 585 genes (30% of the genome) which could not be restored by the signal molecule AI-2 and are therefore not caused by quorum sensing but by lack of the transformation carried out by the LuxS enzyme in the activated methyl cycle. All functional classes of enzymes were affected, including genes known to be important for biofilm formation, bacteriocin synthesis, competence, and acid tolerance. At the same time, 59 genes were identified whose transcription clearly responded to the addition of AI-2. Some of them were related to protein synthesis, stress, and cell division. Three membrane transport proteins were upregulated which are not related to any of the known AI-2 transporters. Three transcription factors were identified whose transcription was stimulated repeatedly by AI-2 addition during growth. Finally, a global regulatory protein, the 8 subunit of the RNA polymerase (rpoE), was induced 147-fold by AI-2, representing the largest differential gene expression observed. The data show that many phenotypes related to the luxS mutation cannot be ascribed to quorum sensing and have identified for the first time regulatory proteins potentially mediating AI-2-based signaling in gram-positive bacteria.}},
  author       = {{Sztajer, Helena and Lemme, André and Vilchez Vargas, Ramiro and Schulz, Stefan and Geffers, Robert and Yip, Cindy Ying Yin and Levesque, Celine M and Cvitkovitch, Dennis G and Wagner-Döbler, Irene}},
  issn         = {{0021-9193}},
  journal      = {{JOURNAL OF BACTERIOLOGY}},
  keywords     = {{ENTEROHEMORRHAGIC ESCHERICHIA-COLI,QUORUM-SENSING SIGNAL,OXIDATIVE STRESS TOLERANCE,GORDONII BIOFILM FORMATION,COMPETENCE DEVELOPMENT,RNA-POLYMERASE,TRANSCRIPTIONAL REGULATORS,SALMONELLA-TYPHIMURIUM,BACTERIOCIN PRODUCTION,BACILLUS-SUBTILIS}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{401--415}},
  title        = {{Autoinducer-2-regulated genes in Streptococcus mutans UA159 and global metabolic effect of the luxS mutation}},
  url          = {{http://dx.doi.org/10.1128/JB.01086-07}},
  volume       = {{190}},
  year         = {{2008}},
}

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