Genome-wide study of the defective sucrose fermenter strain of Vibrio cholerae from the Latin American cholera epidemic
| Autor: | Lena Líllian Canto de Sá Morais, Davi Toshio Inada, Edvaldo Carlos Brito Loureiro, Cristiane C. Thompson, Clayton Pereira Silva de Lima, Robert Edwards, Edivaldo Costa Sousa Júnior, Daniel R. Garza, Elisabeth Conceição de Oliveira Santos, Ana Carolina Paulo Vicente, Keley N. B Nunes, Bas E. Dutilh, Jedson Ferreira Cardoso, Márcio Roberto Teixeira Nunes, Rodrigo Vellasco Duarte Silvestre |
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| Rok vydání: | 2012 |
| Předmět: |
Bacterial Diseases
Sucrose medicine.disease_cause Genome El Tor Bacteriophage Cholera Gram Negative Bacteriophages Genome Sequencing Vibrio cholerae Phylogeny Genetics Base Composition Multidisciplinary biology Genomics Genome Scans Bacterial Pathogens Phenotype Infectious Diseases Medicine Energy and redox metabolism Mitochondrial medicine [NCMLS 4] Research Article Neglected Tropical Diseases Science Virulence Microbiology Genome Analysis Tools Genome-Wide Association Studies medicine Epidemics Gene Prediction Biology Microbial Pathogens Gene Comparative genomics Computational Biology Comparative Genomics biology.organism_classification medicine.disease Interspersed Repetitive Sequences Latin America DNA Viral Mutation Microbial Evolution Genome Bacterial |
| Zdroj: | PLoS One, 7, 5 PLoS One, 7 PLoS ONE, Vol 7, Iss 5, p e37283 (2012) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | Contains fulltext : 108030.pdf (Publisher’s version ) (Open Access) The 7th cholera pandemic reached Latin America in 1991, spreading from Peru to virtually all Latin American countries. During the late epidemic period, a strain that failed to ferment sucrose dominated cholera outbreaks in the Northern Brazilian Amazon region. In order to understand the genomic characteristics and the determinants of this altered sucrose fermenting phenotype, the genome of the strain IEC224 was sequenced. This paper reports a broad genomic study of this strain, showing its correlation with the major epidemic lineage. The potentially mobile genomic regions are shown to possess GC content deviation, and harbor the main V. cholera virulence genes. A novel bioinformatic approach was applied in order to identify the putative functions of hypothetical proteins, and was compared with the automatic annotation by RAST. The genome of a large bacteriophage was found to be integrated to the IEC224's alanine aminopeptidase gene. The presence of this phage is shown to be a common characteristic of the El Tor strains from the Latin American epidemic, as well as its putative ancestor from Angola. The defective sucrose fermenting phenotype is shown to be due to a single nucleotide insertion in the V. cholerae sucrose-specific transportation gene. This frame-shift mutation truncated a membrane protein, altering its structural pore-like conformation. Further, the identification of a common bacteriophage reinforces both the monophyletic and African-Origin hypotheses for the main causative agent of the 1991 Latin America cholera epidemics. |
| Databáze: | OpenAIRE |
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