Inherited Differences in Sensitivity to Radiation in Escherichia Coli
نویسندگان
چکیده
منابع مشابه
Loci for radiation sensitivity in Escherichia coli strain Bs-1.
TRAIN B,-, is a mutcnt of Escherichia coli strain B, isolated and described by HILL and SIMSON (1961), having the following properties: it is extremely sensitive to ultraviolet (UV) radiation; does not, like parent strain B, form filaments following UV irradiation; is less efficient than strain B at reactivating certain UV irradiated coliphages (HCR-) ; cannot excise UV induced thymine dimers f...
متن کاملAntibiotic Sensitivity Patterns of Escherichia coli Isolated in Urine Samples of Patients Referred to Ayatollah Mousavi Hospital in Zanjan
Background & Objective: Escherichia coli (E. coli) is considered to be the most common cause of urinary tract infections (UTIs) worldwide. Due to the recent rise in bacterial resistance to antibiotics and the appearance of multidrug-resistant E. coli, treatment options have been significantly limited, thus increasing the cost of treatment as well as morbidity and mortality rates, especially in ...
متن کاملAmplified RNase H activity in Escherichia coli B/r increases sensitivity to ultraviolet radiation.
Strains of E. coli B/r transformed with the plasmid pSK760 were found to be sensitized to inactivation by ultraviolet radiation (UV) and to have elevated levels of RNase H activity. Strains transformed with the carrier vector pBR322 or the plasmid pSK762C derived from pSK760 but with an inactivated rnh gene were not sensitized. UV-inactivation data for strains having known defects in DNA repair...
متن کاملPhenethyl alcohol sensitivity in Escherichia coli.
Phenethyl alcohol is known to be bacteriostatic to certain gram-negative microorganisms (B. 0. Lilley and J. H. Brewer, J. Am. Pharm. Assoc. Sci. Ed. 43:6, 1953) and to inhibit reversibly deoxyribonucleic acid (DNA) synthesis of Escherichia coli while allowing ribonucleic acid (RNA) and protein synthesis to proceed (G. Berrah and W. A. Konetzka, J. Bacteriol. 83:738, 1962; R. W. Treick and W. A...
متن کاملMutations in Escherichia coli that effect sensitivity to oxygen.
Fifteen oxygen-sensitive (Oxys) mutants of Escherichia coli were isolated after exposure to UV light. The mutants did not form macroscopic colonies when plated aerobically. They did form macroscopic colonies anaerobically. Oxygen, introduced during log phase, inhibited the growth of liquid cultures. The degree of inhibition was used to separate the mutants into three classes. Class I mutants di...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1946
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.32.3.59