Affiliation: National Institute of Infectious Diseases
- Identification of a chitin-induced small RNA that regulates translation of the tfoX gene, encoding a positive regulator of natural competence in Vibrio choleraeShouji Yamamoto
Department of Bacteriology I, National Institute of Infectious Diseases, Shinjuku ku, Tokyo 162 8640, Japan
J Bacteriol 193:1953-65. 2011..Taking these results together, we propose that in the presence of (GlcNAc)₂, TfoR sRNA is expressed to activate the translation of tfoX(VC), which leads to the induction of natural competence...
- Application of lambda Red recombination system to Vibrio cholerae genetics: simple methods for inactivation and modification of chromosomal genesShouji Yamamoto
Department of Bacteriology, National Institute of Infectious Diseases, Tokyo, Japan
Gene 438:57-64. 2009..Use of the techniques presented here should prompt rapid and efficient mutagenesis/modification of V. cholerae chromosomal genes...
- Chitin disaccharide (GlcNAc)2 induces natural competence in Vibrio cholerae through transcriptional and translational activation of a positive regulatory gene tfoXVCShouji Yamamoto
Department of Bacteriology I, National Institute of Infectious Diseases, Toyama 1 23 1, Shinjuku ku, Tokyo 162 8640, Japan
Gene 457:42-9. 2010..These results suggested the dual activation of tfoX(VC) expression to be essential to induce competence. The highly transformable strain created here should aid the study of natural competence in V. cholerae...
- LrhA positively controls the expression of the locus of enterocyte effacement genes in enterohemorrhagic Escherichia coli by differential regulation of their master regulators PchA and PchBNaoko Honda
Department of Bacteriology, National Institute of Infectious Diseases, Toyama 1 23 1, Shinjuku ku, Tokyo 162 8640, Japan
Mol Microbiol 74:1393-41. 2009..Purified His(6)-LrhA protein differentially bound to the regulatory regions of pchA/B, suggesting that direct regulation of pchA and pchB genes by LrhA in turn controls the expression of LEE genes...
- Transcription of the ehx enterohemolysin gene is positively regulated by GrlA, a global regulator encoded within the locus of enterocyte effacement in enterohemorrhagic Escherichia coliTakehito Saitoh
Department of Bacteriology, Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo 162 8640, Japan
J Bacteriol 190:4822-30. 2008..These results together suggest that GrlA acts as a positive regulator for the ehx transcription in EHEC...
- Multiplex PCR assay for identification of three major pathogenic Vibrio spp., Vibrio cholerae, Vibrio parahaemolyticus, and Vibrio vulnificusHidemasa Izumiya
Department of Bacteriology I, National Institute of Infectious Diseases, Toyama, Shinjuku ku, Tokyo, Japan
Mol Cell Probes 25:174-6. 2011..It specifically identified them from among 133 strains of various Vibrio species and other genera, and was applicable for testing seawater, suggesting its usefulness...
- Horizontal gene transfer of a genetic island encoding a type III secretion system distributed in Vibrio choleraeMasatomo Morita
Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo 162 8640, Japan
Microbiol Immunol 57:334-9. 2013..47 kb gene cluster of T3SS, which had been integrated into a site on the chromosome by recombination. Therefore, it is suggested that horizontal gene transfer of T3SS-related genes occurs among V. cholerae in natural ecosystems...
- RodZ regulates the post-transcriptional processing of the Shigella sonnei type III secretion systemJiro Mitobe
Department of Bacteriology I, National Institute of Infectious Diseases, Shinjuku, Tokyo, Japan
EMBO Rep 12:911-6. 2011..Thus, we propose that RodZ is a new membrane-bound RNA-binding protein that provides a scaffold for post-transcriptional regulation...
- Emergence and genetic diversity of El Tor Vibrio cholerae O1 that possess classical biotype ctxB among travel-associated cases of cholera in JapanMasatomo Morita
Department of Bacteriology, National Institute of Infectious Diseases, 1 23 1 Toyama, Shinjuku ku, Tokyo 162 8640, Japan
J Med Microbiol 59:708-12. 2010..El Tor variant strains are widespread in Asian countries and show significant genetic diversity, indicating that their spread is a result of multiclonal expansion rather than spread from a single clone...