THYMINELESS DEATH IN BACILLUS MEGATERIUM
نویسندگان
چکیده
منابع مشابه
On the mechanism of thymineless death in Bacillus subtilis.
Thymineless death (TD), the loss by a thymine-requiring auxotroph of the ability to multiply after a period of thymine starvation, was first described1 in Escherichia coli 15T-, and was attributed to "unbalanced growth," the synthesis of RNA and protein in the absence of DNA synthesis. This phenomenon has been investigated in thymineless auxotrophs of a number of bacterial species: E. coli 15Ta...
متن کاملThymineless death in Escherichia coli.
There is little doubt that thymine starvation af fects the DNA of thymine requiring bacteria1-5. However, the process of killing is fairly complicated and remains to be clarified. The genes responsible for the control of sensitivity to thymine starvation have not been identified, even though claims have been but forward for at least one gene6. Besides, whether the cells die when still in incub...
متن کاملPlasmolysis in Bacillus Megaterium.
Weibull, Claes (Central Bacteriological Laboratory of Stockholm City, Stockholm, Sweden). Plasmolysis in Bacillus megaterium. J. Bacteriol. 89:1151-1154. 1965.-Sucrose solutions stronger than 1 m caused plasmolysis in Bacillus megaterium strain M, whereas concentrated NaCl and KNO(3) solutions were ineffective. In plasmolyzed cells, mesosome bodies were found in pockets between the cytoplasmic ...
متن کاملThymineless death, at the origin
Thymineless death (TLD) in bacteria has been a focus of research for decades. Nevertheless, the advances in the last 5 years, with Escherichia coli as the model organism, have been outstanding. Independent research groups have presented compelling results that establish that the initiation of chromosome replication under thymine starvation is a key element in the scenario of TLD. Here we review...
متن کاملEnzyme localization in Bacillus megaterium.
Weibull (1953a) has shown that after osmotic lysis of protoplasts of Bacillus megaterium, prepared by controlled treatment with lysozyme, only two microscopically detectable structures remain; membrane-like bodies termed "ghosts," and granules. The ghosts were found to sediment as a dark yellow fraction by centrifugation at 10,000 G (Weibull, 1953b) and to contain almost all the pigmented mater...
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: Journal of Bacteriology
سال: 1964
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.87.5.1079-1086.1964