Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Extrachromosomal deoxyribonucleic acid in R factor-harboring Enterobacteriaceae
View through CrossRef
Extrachromosomal deoxyribonucleic acid (DNA) from 24 different R factor-harboring Enterobacteriaceae was isolated and characterized by analytical ultracentrifugation and electron microscopy. The R factors represented 15 different patterns of transferable drug resistance found in enterobacteria from an enclosed geographic area. All of the strains contained extrachromosomal, circular DNA molecules within the range of 0.4 to 52 mum. More than one size class of circular DNA molecules was observed in the majority of the extrachromosomal DNA preparations. The buoyant density of the extrachromosomal DNA ranged from 1.700 to 1.720 g/cm3. The majority of the bacteria contained extrachromosomal DNAs of various densities. Three-fourths of the R factors were classified as fi+. The investigation illustrates the extensive variability in the physical characteristics of plasmid DNA from R factor-harboring strains.
American Society for Microbiology
Title: Extrachromosomal deoxyribonucleic acid in R factor-harboring Enterobacteriaceae
Description:
Extrachromosomal deoxyribonucleic acid (DNA) from 24 different R factor-harboring Enterobacteriaceae was isolated and characterized by analytical ultracentrifugation and electron microscopy.
The R factors represented 15 different patterns of transferable drug resistance found in enterobacteria from an enclosed geographic area.
All of the strains contained extrachromosomal, circular DNA molecules within the range of 0.
4 to 52 mum.
More than one size class of circular DNA molecules was observed in the majority of the extrachromosomal DNA preparations.
The buoyant density of the extrachromosomal DNA ranged from 1.
700 to 1.
720 g/cm3.
The majority of the bacteria contained extrachromosomal DNAs of various densities.
Three-fourths of the R factors were classified as fi+.
The investigation illustrates the extensive variability in the physical characteristics of plasmid DNA from R factor-harboring strains.
Related Results
Extrachromosomal Deoxyribonucleic Acid in Different Enterobacteria
Extrachromosomal Deoxyribonucleic Acid in Different Enterobacteria
Eighty-seven different enterobacteria and pseudomonas strains were examined for the presence of extrachromosomal deoxyribonucleic acid (DNA). Thirty-four strains contained closed c...
High prevalence of fecal carriage of Extended-spectrum beta-lactamase and carbapenemase-producing Enterobacteriaceae among food handlers at the University of Gondar, Northwest Ethiopia
High prevalence of fecal carriage of Extended-spectrum beta-lactamase and carbapenemase-producing Enterobacteriaceae among food handlers at the University of Gondar, Northwest Ethiopia
BackgroundFecal carriage of extended-spectrum beta-lactamase and Carbapenemase-producing Enterobacteriaceae is a potential risk for the transmission of infection with resistant str...
Isolation of extended spectrum beta-lactamase producing Enterobacteriaceae among children with urinary tract infection: A cross sectional study.
Isolation of extended spectrum beta-lactamase producing Enterobacteriaceae among children with urinary tract infection: A cross sectional study.
Abstract
Background: Resistance of Gram-negative bacteria to antibiotics had increased at an alarming pace over the last two decades. Empirical antibiotic treatment of UTI ...
British Food Journal Volume 46 Issue 11 1944
British Food Journal Volume 46 Issue 11 1944
1. From the information given to the Committee by members of the trade the following conclusions were drawn : (i) Four main types of product are sold under a name commonly includin...
Pediatric Febrile Urinary Tract Infection Caused by ESBL Producing Enterobacteriaceae Species
Pediatric Febrile Urinary Tract Infection Caused by ESBL Producing Enterobacteriaceae Species
Background. Over the past decade, drug resistance pattern has worsened for many of the uropathogens due to overuse of antibiotics for empiric treatment. The burden of extended spec...
Magnitude and antimicrobial susceptibility patterns of extended-spectrum β-lactamase producing Enterobacteriaceae recovered from environmental samples at Tikur Anbessa Specialized Hospital, Ethiopia
Magnitude and antimicrobial susceptibility patterns of extended-spectrum β-lactamase producing Enterobacteriaceae recovered from environmental samples at Tikur Anbessa Specialized Hospital, Ethiopia
Abstract
Background
The hospital environment especially the intensive care units (ICUs) contributes to the spread of extended-spectrum β-lactamase (ESBL) producing Enterob...
Acid Fracturing Technique for Carbonate Reservoirs Using Nitric Acid Powder
Acid Fracturing Technique for Carbonate Reservoirs Using Nitric Acid Powder
Abstract
The length of the etched fracture is rather limited utilizing traditional acid fracturing techniques, especially in a high-temperature carbonate reservoi...
Recent Advances in Foamed Acid Fracturing
Recent Advances in Foamed Acid Fracturing
Abstract
Foamed acid fracturing is gaining importance in maximizing flowback recovery and is particularly applicable when reservoir energy is not sufficient to effec...