High level, intrinsic resistance ofNatronococcus occultusto potassium tellurite
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چکیده
منابع مشابه
Resistance of Thermus spp. to Potassium Tellurite.
Two members of the genus Thermus were examined for their resistance to toxic inorganic compounds. They both proved to be fairly resistant to tellurite and selenite and to many other heavy metal salts. Cell extracts of Thermus thermophilus HB8 and of T. flavus AT-62 catalyze the reduction of K(2)TeO(3) in a reaction which is dependent on NADH oxidation.
متن کاملCysteine metabolism-related genes and bacterial resistance to potassium tellurite.
Tellurite exerts a deleterious effect on a number of small molecules containing sulfur moieties that have a recognized role in cellular oxidative stress. Because cysteine is involved in the biosynthesis of glutathione and other sulfur-containing compounds, we investigated the expression of Geobacillus stearothermophilus V cysteine-related genes cobA, cysK, and iscS and Escherichia coli cysteine...
متن کاملTellurite and Tetracycixne Resistance in Enterococci
APPLEMAN, M. D. (University of Southern California, Los Angeles), AND I. M. HEINMILLER. Comparison of tellurite resistance and tetracycline resistance among the enterococci. Appl. Microbiol. 9:391-394. 1961.-A correlation was found to exist between tellurite and tetracycline resistance in the enterococci. Fleming (1932) reported that species of bacteria which were susceptible to penicillin were...
متن کاملBacterial Toxicity of Potassium Tellurite: Unveiling an Ancient Enigma
Biochemical, genetic, enzymatic and molecular approaches were used to demonstrate, for the first time, that tellurite (TeO(3) (2-)) toxicity in E. coli involves superoxide formation. This radical is derived, at least in part, from enzymatic TeO(3) (2-) reduction. This conclusion is supported by the following observations made in K(2)TeO(3)-treated E. coli BW25113: i) induction of the ibpA gene ...
متن کاملSpheroidal forms of Bacillus megaterium induced by potassium tellurite.
This communication is concerned with the formation of spheroidal bodies from Bacillus megaterium strain KM, by the action of potassium tellurite in a hypertonic sucrose medium. Cells grown in sucrose-casein hydrolyzate broth (Lederberg and St. Clair, J. Bacteriol., 75, 143, 1958) were inoculated into fresh broth and aerated at 37 C for 3 to 4 hr. Potassium tellurite (final concentration 0.05 pe...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1999
ISSN: 0378-1097,1574-6968
DOI: 10.1111/j.1574-6968.1999.tb13544.x