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Comparison of the genome sequences of Listeria monocytogenes and Listeria innocua: clues for evolution and pathogenicity
Listeria monocytogenes, an invasive opportunistic, food-borne pathogen, remains one of the leading causes of mortality from food-borne infections. The recently determined complete genome sequences of L. monocytogenes strain EGDe and of that of the closely related non-pathogenic species Listeria inno...
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Published in: | FEMS immunology and medical microbiology 2003-04, Vol.35 (3), p.207-213 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Listeria monocytogenes, an invasive opportunistic, food-borne pathogen, remains one of the leading causes of mortality from food-borne infections. The recently determined complete genome sequences of
L. monocytogenes strain EGDe and of that of the closely related non-pathogenic species
Listeria innocua strain CLIP11262 enhance our knowledge of the genetic basis of the virulence of
L. monocytogenes and advance our understanding of the evolution of these
Listeria species. Both genomes encode a high number of surface, transport and regulatory proteins. Comparison of the genome organisation revealed a perfect synteny between the two
Listeria genomes. Comparison with other closely related bacteria also showed a high conservation in genome organisation among the
Listeria,
Staphylococcus and
Bacillus group of low G+C content bacteria. Distinct G+C content of a number of strain-specific genes suggests intensive lateral gene transfer. The identification of a 55-kb locus encoding proteins with high homology to
Salmonella enterica serovar Typhimurium vitamin B
12 synthesis proteins as well as those necessary for degradation of ethanolamine and propanediol further indicates acquisition of a complete metabolic pathway by horizontal gene transfer and a probable role of this locus in anaerobic growth in the host. |
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ISSN: | 0928-8244 1574-695X |
DOI: | 10.1016/S0928-8244(02)00448-0 |