Site-specific recombinase genes in three Shigella subgroups and nucleotide sequences of a pinB gene and an invertible B segment from Shigella boydii
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چکیده
منابع مشابه
Site-specific recombinase genes in three Shigella subgroups and nucleotide sequences of a pinB gene and an invertible B segment from Shigella boydii.
Inversional switching systems in procaryotes are composed of an invertible DNA segment and a site-specific recombinase gene adjacent to or contained in the segment. Four related but functionally distinct systems have previously been characterized in detail: the Salmonella typhimurium H segment-hin gene (H-hin), phage Mu G-gin, phage P1 C-cin, and Escherichia coli e14 P-pin. In this article we r...
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While Shigella boydii serotypes have been reported on numerous occasions from many parts of the world (Weil and Saphra, 1953), they rarely have comprised more than a small proportion of the total number of Shigella found, and knowledge of their distribution, cultural characteristics, immunological relationships and pathogenicity is incomplete in some respects. This is particularly true of the m...
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No new serotypes have been added to the Shigella schema since 1958, although several provisional serotypes have been described. We conducted biochemical and serological studies on three provisional Shigella boydii serotypes. Four strains of serotype 2710-54 from four widely separated countries, 7 strains of serotype 3615-53 from three different countries, and 31 strains of serotype 1344-78 (E10...
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To detect genetic defects that might have caused loss of flagella in Shigella boydii and Shigella sonnei, the region III flagellar (fli) operons were cloned from certain strains and analyzed with reference to the restriction maps and genetic maps of Escherichia coli fli operons. S. boydii NCTC9733 (strain C5 in this paper) had the 988-bp internal deletion in the fliF gene that encodes a large s...
متن کاملIdentification and characterization of Shigella boydii 20 serovar nov., a new and emerging Shigella serotype.
Analysis of 163 putative Shigella isolates from Canada and the USA showed biochemical reactions consistent with Shigella species, although none of the isolates reacted with antiserum raised against any of the well-established or provisional Shigella serotypes. All these isolates, provisionally designated serotype SH108, were positive for the ipaH gene and the invasion-associated locus. All ferm...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1991
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.173.13.4079-4087.1991