Mutants without mutations
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چکیده
منابع مشابه
Expression of acrA and acrB Genes in Esherichia coli Mutants with or without marR or acrR Mutations
Objective(s): The major antibiotic efflux pump of Esherichia coli is AcrAB-TolC. The first part of the pump, AcrAB, is encoded by acrAB operon. The expression of this operon can be kept elevated by overexpression of an activator, MarA following inactivation of MarR and AcrR repressors due to mutation in encoding genes, marR and acrR, respectively. The aims of this research were to us...
متن کاملexpression of acra and acrb genes in esherichia coli mutants with or without marr or acrr mutations
objective(s): the major antibiotic efflux pump of esherichia coli is acrab-tolc. the first part of the pump, acrab, is encoded by acrab operon. the expression of this operon can be kept elevated by overexpression of an activator, mara following inactivation of marr and acrr repressors due to mutation in encoding genes, marr and acrr, respectively. the aims of this research were to use e. coli m...
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and those arising in the context of viral infections remains to be elucidated. These entities share with MBL the indolent course and the low propensity to progress to overt malignancy. Among the patients followed for 5 years, only 17% of them progressed to clinically overt, splenic B-cell lymphoma of MZ origin, and only 3 needed treatment over the follow-up time. It is likely that CBL-MZ repres...
متن کاملExpression of acrA and acrB Genes in Esherichia coli Mutants with or without marR or acrR Mutations
OBJECTIVE(S) The major antibiotic efflux pump of Esherichia coli is AcrAB-TolC. The first part of the pump, AcrAB, is encoded by acrAB operon. The expression of this operon can be kept elevated by overexpression of an activator, MarA following inactivation of MarR and AcrR repressors due to mutation in encoding genes, marR and acrR, respectively. The aims of this research were to use E. coli mu...
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hepatitis b virus (hbv) is a crucial public health problem with approximately 350 million affected people and a death rate of 0.5 to 1.2 million per year worldwide. it proceeds to end-stage liver diseases including cirrhosis with hepatic decompensation and hepatocellular carcinoma (hcc). pakistan lies in the endemic region with 3% hbv carrier rate in the country. the differences in disease outc...
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ژورنال
عنوان ژورنال: Nature
سال: 1985
ISSN: 0028-0836,1476-4687
DOI: 10.1038/313635a0