Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Distribution of S-layers on the surface of Bacillus cereus strains: phylogenetic origin and ecological pressure
Autore:
Mignot, T; Denis, B; Couture-Tosi, E; Kolsto, AB; Mock, M; Fouet, A;
Indirizzi:
Inst Pasteur, CNRS, URA 2172, F-75724 Paris 15, France Inst Pasteur Paris France 15 r, CNRS, URA 2172, F-75724 Paris 15, France Inst Pasteur, Grp Microscopie Struct & Mol, F-75724 Paris, France Inst Pasteur Paris France F-75724 ie Struct & Mol, F-75724 Paris, France Univ Oslo, Inst Pharm, N-0316 Oslo, Norway Univ Oslo Oslo Norway N-0316Univ Oslo, Inst Pharm, N-0316 Oslo, Norway Biotechnol Ctr Oslo, Oslo, Norway Biotechnol Ctr Oslo Oslo NorwayBiotechnol Ctr Oslo, Oslo, Norway
Titolo Testata:
ENVIRONMENTAL MICROBIOLOGY
fascicolo: 8, volume: 3, anno: 2001,
pagine: 493 - 501
SICI:
1462-2912(200108)3:8<493:DOSOTS>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CELL-SURFACE; MOLECULAR CHARACTERIZATION; ANTHRACIS; THURINGIENSIS; PROTEINS; INFECTIONS; PATHOGENESIS; VIRULENCE; CLONING; GENE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Fouet, A Inst Pasteur, CNRS, URA 2172, 28 Rue Dr Roux, F-75724 Paris 15, France Inst Pasteur 28 Rue Dr Roux Paris France 15 724 Paris 15, France
Citazione:
T. Mignot et al., "Distribution of S-layers on the surface of Bacillus cereus strains: phylogenetic origin and ecological pressure", ENVIRON MIC, 3(8), 2001, pp. 493-501

Abstract

Bacillus anthracis, Bacillus cereus and Bacillus thuringiensis have been described as members of the Bacillus cereus group but are, in fact, one species. B. anthracis is a mammal pathogen, B. thuringtensis an entomopathogen and B. cereus a ubiquitous soil bacterium and an occasional human pathogen. In two clinical isolates of B. cereus, in some B. thuringiensis strains and in B. anthracis, an S-layer has been described. We investigated how the S-layer is distributed in B, cereus, and whether phylogeny or ecology could explain its presence on the surface of some but not all strains. We first developed a simple biochemical assay to test for the presence of the S-layer. We then used the assay with 51 strains of known genetic relationship: 26 genetically diverse B. cereus and 25 non-B. anthracis of the B. anthracis cluster. When present, the genetic organization of the S-layer locus was analysed further. It was identical in B. cereus and B. anthracis. Nineteen strains harboured an S-layer, 16 of which belonged to the B. anthracis cluster. All 19 were B. cereus clinical isolates or B. thuringiensis, except for one soil and one dairy strain. These findings suggest a common phylogenetic origin for the S-layer at the surface of B. cereus strains and, presumably,ecological pressure on its maintenance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 22:54:06