Partial characterization of nucleoids and nucleoid-plasmid complexes from Salmonella typhimurium.
نویسندگان
چکیده
Nucleoids from Salmonella typhimurium strain LT2 consist of supercoiled deoxyribonucleic acid structures that are ribonuclease labile sedimenting at 1,700S. More than 90% of the covalently closed circular deoxyribonucleic acid of a cryptic plasmid harbored by this strain cosediments with the host's 1,700S nucleoids.
منابع مشابه
Genetic Characterization of Salmonella Typhimurium Isolates from Faeces of Children with Gastroenteritis Hospitalized in Baqiatollah-Azam Hospital, Tehran, Iran
Introduction: In Iran, invasive nontyphoidal Salmonella (iNTS) disease causes severe bacteremic illness among children <5 years old. The global yearly incidence of iNTS disease in children was reported to be in the 3.4 (range 2.1-6.5) million cases, (overall incidence 49 cases (range 30-94) per 100,000 population), the iNTS case-fatality ratio (CFR) of 20% yielded 681,316 deat...
متن کاملCharacterization of the Salmonella Isolates from Backyard Chickens in North of Iran, by Serotyping, Multiplex PCR and Antibiotic Resistance Analysis
The present study was designed to investigate the prevalence of Salmonella species, their molecular characterization and antibiotic resistance in backyard chickens. A total of 1125 samples were collected from backyard chickens in two consequent samplings. In the first part, samples were included of 820 poor recently hatched chicks, hatching residuals, egg shells in the nest floor, cloacal swabs...
متن کاملMolecular Characterization of a Salmonella Typhimurium Isolate from Caspian Pony
Typhoid disease or salmonellosis is a common sickness in horses. In several epidemiological studies inhospitalized horses, several serotypes of Salmonella often are predominant in nosocomial infections.Transportation, overcrowding, dehydration, oral antimicrobial therapy and infections are the risk factorswhich may activate latent or subclinical salmonellosis. In this study, t...
متن کاملDNA topology and adaptation of Salmonella typhimurium to an intracellular environment.
The expression of genes coding for determinants of DNA topology in the facultative intracellular pathogen Salmonella typhimurium was studied during adaptation by the bacteria to the intracellular environment of J774A.1 macrophage-like cells. A reporter plasmid was used to monitor changes in DNA supercoiling during intracellular growth. Induction of the dps and spv genes, previously shown to be ...
متن کاملIsolation and Detection of Virulence factors of Salmonella typhimurium and Salmonella enteritidis
Plasmids play an important role in the virulence and antibiotic resistance of Salmonella. Salmonella carry plasmids having different size and number. Plasmid profile analysis of single isolates of Salmonella typhimurium and Salmonella enteritidis revealed the presence of 4- plasmid profiles. Salmonella serovars produce several Type III secretions including Sop-E and Sop –B. Soap E is detected b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of bacteriology
دوره 127 1 شماره
صفحات -
تاریخ انتشار 1976