نتایج جستجو برای: restriction modification system

تعداد نتایج: 2396706  

Journal: :jundishapur journal of microbiology 0
sajjad ahmad department of microbiology, faculty of biological sciences, quaid-i-azam university, islamabad, pakistan; department of microbiology, faculty of biological sciences, quaid-i-azam university, islamabad, pakistan faisal ahmad department of microbiology, faculty of biological sciences, quaid-i-azam university, islamabad, pakistan faiz ur rahman department of microbiology, faculty of biological sciences, quaid-i-azam university, islamabad, pakistan salman khan department of microbiology, faculty of biological sciences, quaid-i-azam university, islamabad, pakistan waheed murad department of microbiology and molecular genetics (mmg), university of punjab, lahore, pakistan imran mughal center of biotechnology and microbiology (cobam), university of peshawar, peshawar, pakistan

conclusions the distribution patterns of phase-variable genes in pakistani h. pylori strains were found to be somewhat different. the dominant prevalence of the hsdr gene was an interesting finding, considering its role in bacterial defense in both micro- and macroenvironments. results on culturing, the prevalence of h. pylori infections in the samples was 44.7%. the prevalence was higher in fe...

Journal: :Journal of Biological Chemistry 1989

Journal: :Journal of bacteriology 2015
Louise Roer Frank M Aarestrup Henrik Hasman

The rapid evolution of bacteria is crucial to their survival and is caused by exchange, transfer, and uptake of DNA, among other things. Conjugation is one of the main mechanisms by which bacteria share their DNA, and it is thought to be controlled by varied bacterial immune systems. Contradictory results about restriction-modification systems based on phenotypic studies have been presented as ...

Journal: :Proceedings of the National Academy of Sciences 1983

Journal: :Nucleic acids research 1989
J E Brooks J S Benner D F Heiter K R Silber L A Sznyter T Jager-Quinton L S Moran B E Slatko G G Wilson D O Nwankwo

BamHI, a Type II restriction modification system from Bacillus amyloliquefaciensH recognizes the sequence GGATCC. The methylase and endonuclease genes have been cloned into E. coli in separate steps; the clone is able to restrict unmodified phage. Although within the clone the methylase and endonuclease genes are present on the same pACYC184 vector, the system can be maintained in E. coli only ...

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