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Virulence genes of poxviruses and reoviruses
Vaccine, 1988Identification of viral genes that specify virulence, however defined, is of critical importance for the design of viral vaccines. In particular, the targeted development not only of avirulent vaccine strains but also of viruses to be used as carriers for foreign genes depends on the inactivation or deletion of genes that harm the host.
W K, Joklik +3 more
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Genes controlling retroviral virulence
1997Publisher Summary Retroviruses under normal circumstances infect cells and yet inflict relatively little damage to the infected cell. The cell, however, remains infected for the lifespan of that cell or any daughter cells derived from that infected cell.
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In search of tuberculosis virulence genes
Trends in Microbiology, 1996The identity of the virulence genes that enable tuberculosis organisms to survive in macrophages and to induce the features of tuberculosis remains largely unknown. Numerous putative virulence genes have been identified, but so far there is only conclusive evidence for the role of two genes, KatG and rpoV, in virulence.
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Bacterial Virulence Gene Regulation: An Evolutionary Perspective
Annual Review of Microbiology, 2000▪ Abstract Coevolution between bacteria and their plant or animal hosts determines characteristics of the interaction, the bacterial virulence genes involved, and the regulatory systems controlling expression of virulence genes. The long-standing association between Salmonellae and their animal hosts has resulted in the acquisition by Salmonella ...
P A, Cotter, V J, DiRita
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Mapping Arenavirus Genes Causing Virulence
1987The reassortment of genetic information from RNA viruses with segmented genomes, i. e., Arenaviridae, Bunyaviridae, Orthomyxoviridae, and Reoviridae families, can occur within cells infected by two different viral strains from the same family (COmpans etal. 1981; FIelds and GReene 1982; WEbster etal. 1982; Palese 1984).
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Bacteriophage-mediated spread of bacterial virulence genes
Current Opinion in Microbiology, 2015Bacteriophages are types of viruses that infect bacteria. They are the most abundant and diverse entities in the biosphere, and influence the evolution of most bacterial species by promoting gene transfer, sometimes in unexpected ways. Although pac-type phages can randomly package and transfer bacterial DNA by a process called generalized transduction,
José R Penadés +4 more
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Virulence Gene Regulation in Shigella
EcoSal Plus, 2004Shigella species are the causative agents of bacillary dysentery in humans, an invasive disease in which the bacteria enter the cells of the epithelial layer of the large intestine, causing extensive tissue damage and inflammation. They rely on a plasmid-encoded type III secretion system (TTSS) to cause disease; this system and
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CRISPR Gene Editing of a Virulent Bacteriophage
Cold Spring Harbor Protocols, 2023Genome editing by site-directed mutagenesis is an important tool in biological research. CRISPR gene editing is the latest such tool developed, and one that is widely applicable to study organisms from all kingdoms of life. Here, I introduce a method for making site-directed, defined mutations in a virulent bacteriophage (a bacterial virus) using ...
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VIRULENCE GENES OFCLOSTRIDIUM PERFRINGENS
Annual Review of Microbiology, 1998▪ Abstract Clostridium perfringens causes human gas gangrene and food poisoning as well as several enterotoxemic diseases of animals. The organism is characterized by its ability to produce numerous extracellular toxins including α-toxin or phospholipase C, θ-toxin or perfringolysin O, κ-toxin or collagenase, as well as a sporulation-associated ...
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Brucella: A pathogen without classic virulence genes
Veterinary Microbiology, 2008The first species of Brucella was isolated and characterized almost 120 years ago and recently the complete nucleotide sequences of the genomes of a number of well-characterized Brucella strains have been determined. However, compared to other bacterial pathogens relatively little is known about the factors contributing to its persistence in the host ...
Mohamed N, Seleem +2 more
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