Enzyme Polymorphism and Genetic Population Structure in Escherichia coli and Shigella
نویسندگان
چکیده
منابع مشابه
Genetic polymorphism of the ipaH multicopy antigen gene in Shigella spps. and enteroinvasive Escherichia coli.
The ipaH loci comprise a multicopy antigen gene family unique to Shigella species and enteroinvasive Escherichia coli (EIEC). DNA probes derived from the Shigella flexneri serotype 5 ipaH7.8 gene were used to compare the molecular arrangement of ipaH alleles in a variety of Shigella and EIEC strains. Multiple copies of ipaH-homologous sequences were detected in all invasion plasmids examined. O...
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Shigella flexneri restricts Escherichia coli deoxyribonucleic acid (DNA) and can modify phage DNA so that it is restricted in E. coli.
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Genetic recombination by mating has been demonstrated among a variety of strains classified as Escherichia coli (Lederberg and Tatum, 1946; Cavalli et al., 1953). The possibility of genetic transfers among bacteria currently classified in different species or genera has been proved by transformation and transduction experiments (Lederberg and Edwards, 1953; Schaeffer and Ritz, 1955; Lennox, 195...
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Gene clusters for biosynthesis of 24 of 34 basic O-antigen forms of Shigella spp. are identical or similar to those of the genetically closely related bacterium Escherichia coli. For 18 of these relatedness was confirmed chemically by elucidation of the O-antigen (O-polysaccharide) structures. In this work, structures of the six remaining O-antigens of E. coli O32, O53, O79, O105, O183 (all rel...
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CYP2C19 polymorphism is associated with pretreatment drug response prediction, metabolism, and disposition. Pakistan consists of a population comprising of various ethnic groups residing in different regions of the country each claiming diverse ethnic origins. The identification of CYP450 genotypic composition of these populations is therefore necessary to avoid adverse drug reactions in these ...
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ژورنال
عنوان ژورنال: Microbiology
سال: 1983
ISSN: 1350-0872,1465-2080
DOI: 10.1099/00221287-129-9-2715