Cell surface-located deoxyribonucleic acid receptors in transformable pneumococci
نویسندگان
چکیده
منابع مشابه
Inhibitors of preferentially stimulated deoxyribonucleic acid synthesis in pneumococci.
During experiments with Haemophilus gallinarum, mycoplasma of similar identity, were isolated from the infraorbital sinuses of chickens with coryza. These organisms were unrelated, serologically and by standard biochemical tests, to any other mycoplasma of avian origin. Furthermore, the organisms grew at room temperature in the absence of serum proteins, and were not pathogenic to either chicke...
متن کاملSelective release of a deoxyribonucleic acid-binding factor from the surface of competent pneumococci.
Methods are described that resulted in the selective release of deoxyribonucleic acid (DNA)-binding factor from the surface of competent pneumococci. The same methods caused a parallel inactivation of the DNA-binding capacity of the extracted bacteria. Genetically or physiologically incompetent pneumococci did not yield binding factor upon exposure to the same methods. The solubilized binding f...
متن کاملBinding of deoxyribonucleic acid by cell walls of transformable and nontransformable streptococci.
Cell walls isolated from competent streptococci (group H strain Challis) were shown to bind more homologous and heterologous deoxyribonucleic acid (DNA) than noncompetent walls. Heat- and alkali-denatured DNA was not bound by either wall preparation. Pretreatment of cell walls with cetyltrimethylammonium bromide sharply increased the binding of DNA but did not increase transformation of whole c...
متن کاملdeoxyribonucleic acid
Triostin antibiotics, which contain a cyclic peptide with a disulphide bridge, have been prepared by growing Streptomyces triostinicus in the presence of inorganic [3PS]sulphate. The labelled triostin A has been shown to behave in all respects similarly to the authentic natural product and to enable a much more sensitive radiochemical adaptation of the solvent-partition method for determining a...
متن کاملDeoxyribonucleic Acid
The effects of the three antibiotics U-12,241, nogalamycin, and U-20,661 on (i) deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) synthesis in KB cell cultures and cell-free systems of bacterial and mammalian origin and on (ii) oxidative phosphorylation in rat liver mitochondria were compared. Nogalamycin and U-12,241 inhibited RNA synthesis more strongly than DNA synthesis in all test sys...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1975
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.122.3.1339-1350.1975