Purification and Properties of Chromosomally Mediated -Lactamase from Citrobacter freundii GN7391
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چکیده
منابع مشابه
Interaction of cefpirome and a cephalosporinase from Citrobacter freundii GN7391.
The interaction of cefpirome and a cephalosporinase from Citrobacter freundii, including hydrolysis and inhibition, was studied in comparison with those of cefotiam, cefotaxime, and ceftazidime. Cefpirome was hydrolyzed by the enzyme more rapidly at Vmax than were cefotaxime and ceftazidime. However, the low affinity of the enzyme for cefpirome caused a reduction in the hydrolytic rate of cefpi...
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Dear Sir, Enterobacteriaceae, other than Escherichia spp. and Klebsiella spp., can cause serious nosocomial infections and appear to have become increasingly drug resistant. Citrobacter freundii, belonging to the Enterobacteriaceae family, is a prominent opportunistic pathogen responsible for serious infections in immunocompromised individuals. C. freundii is characterized by the presence of ch...
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CfrI, a new restriction endonuclease of unique substrate specificity, has been isolated from a Citrobacterfreundii strain. The enzyme recognizes a degenerated sequence PyGGCCPu in double-strand DNA and cleaves it between Py and G residues to yield 5' -protruding tetranucleotide ends GGCC.
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The ability of a bacterial population to survive in different niches, as well as in stressful and rapidly changing environmental conditions, depends greatly on its genetic content. To survive such fluctuating conditions, bacteria have evolved different mechanisms to modulate phenotypic variations and related strategies to produce high levels of genetic diversity. Laboratories working in microbi...
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ژورنال
عنوان ژورنال: Microbiology
سال: 1980
ISSN: 1350-0872,1465-2080
DOI: 10.1099/00221287-121-2-449