Literature DB >> 1706455

Distribution of msDNAs among serotypes of enteropathogenic Escherichia coli strains.

D Lim1, T A Gomes, W K Maas.   

Abstract

A genetic element, called a retron, is present in certain Escherichia coli strains. It consists of genes for the production of a covalently linked DNA-RNA compound and a reverse transcriptase. The presence of a retron can be detected by testing for a satellite DNA band by polyacrylamide gel electrophoresis. This DNA band consists of the DNA portion of the DNA-RNA compound and is called msDNA (multicopy single-stranded DNA). In a survey of intestinal E. coli isolates we detected msDNAs in classical enteropathogenic (EPEC) strains and in strains with aggregative adherence to tissue-culture cells (AA), but not in enteroinvasive (EIEC) and enterotoxigenic (ETEC) strains. Among 76 EPEC strains belonging to 14 different serotypes, msDNA was found to be present in 7 serotypes. In total, five different types of msDNA were found, although within each serotype, the msDNAs were the same. These results suggest that different retrons are clonally inherited.

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Year:  1990        PMID： 1706455     DOI： 10.1111/j.1365-2958.1990.tb00548.x

Source DB:  PubMed          Journal:  Mol Microbiol        ISSN： 0950-382X            Impact factor:   3.501


  8 in total

1.  Transposition of IS1397 in the family Enterobacteriaceae and first characterization of ISKpn1, a new insertion sequence associated with Klebsiella pneumoniae palindromic units.

Authors:  C Wilde; S Bachellier; M Hofnung; J M Clément
Journal:  J Bacteriol       Date:  2001-08       Impact factor: 3.490

2.  A mutational study of the site-specific cleavage of EC83, a multicopy single-stranded DNA (msDNA): nucleotides at the msDNA stem are important for its cleavage.

Authors:  K Kim; D Jeong; D Lim
Journal:  J Bacteriol       Date:  1997-10       Impact factor: 3.490

3.  Bacterial interspersed mosaic elements (BIMEs) are a major source of sequence polymorphism in Escherichia coli intergenic regions including specific associations with a new insertion sequence.

Authors:  S Bachellier; J M Clément; M Hofnung; E Gilson
Journal:  Genetics       Date:  1997-03       Impact factor: 4.562

4.  Survey of multicopy single-stranded DNAs and reverse transcriptase genes among natural isolates of Myxococcus xanthus.

Authors:  B C Lampson; M Inouye; S Inouye
Journal:  J Bacteriol       Date:  1991-09       Impact factor: 3.490

5.  Diversity of retron elements in a population of rhizobia and other gram-negative bacteria.

Authors:  S A Rice; J Bieber; J Y Chun; G Stacey; B C Lampson
Journal:  J Bacteriol       Date:  1993-07       Impact factor: 3.490

6.  A novel retron of Vibrio parahaemolyticus is closely related to retron-Vc95 of Vibrio cholerae.

Authors:  Toshi Shimamoto; Ashraf M Ahmed; Tadashi Shimamoto
Journal:  J Microbiol       Date:  2013-06-28       Impact factor: 3.422

7.  Phylogenetic comparison of retron elements among the myxobacteria: evidence for vertical inheritance.

Authors:  S A Rice; B C Lampson
Journal:  J Bacteriol       Date:  1995-01       Impact factor: 3.490

8.  Multicopy Single-Stranded DNA Directs Intestinal Colonization of Enteric Pathogens.

Authors:  Johanna R Elfenbein; Leigh A Knodler; Ernesto S Nakayasu; Charles Ansong; Heather M Brewer; Lydia Bogomolnaya; L Garry Adams; Michael McClelland; Joshua N Adkins; Helene L Andrews-Polymenis
Journal:  PLoS Genet       Date:  2015-09-14       Impact factor: 5.917
  8 in total

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