Induction of filament formation and thymineless death in Escherichia coli K-12.

نویسندگان

  • M Gherardi
  • N Sicard
چکیده

The study of isogenic strains of Escherichia coli K-12 carrying mutations which control filament formation after ultraviolet irradiation showed that there is not necessarily a relationship between filament formation and thymineless death.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Thymineless death in Escherichia coli 15T- and recombinants of 15T- and Escherichia coli K-12.

Thymineless death was examined in Escherichia coli 15T(-) and recombinants of 15T(-) and E. coli K-12. Those strains that were very sensitive to thymine deprivation were also very sensitive to a variety of inducing agents (mitomycin C, ultraviolet light, hydroxyurea, and nalidixic acid). Those strains that were relatively resistant to thymineless death were also relatively resistant to the indu...

متن کامل

Genetic determinant in Escherichia coli affecting thymineless death and ultraviolet sensitivity.

We have infected Escherichia coli strain B3 with F' factors carrying different lengths of the K-12 chromosome. When the F' factor carries the tsx to purE segment, the resulting hybrid merodiploid shows increased sensitivity to thymineless death, although leaky deoxyribonucleic acid synthesis is unaffected, as well as increased sensitivity to ultraviolet irradiation. The dominant or partially do...

متن کامل

Energy Requirement for Thymineless Death in Cells of Escherichia Coli.

Freifelder, David (University of California, Berkeley), and Ole Maaløe. Energy requirement for thymineless death in cells of Escherichia coli. J. Bacteriol. 88:987-990. 1964.-Thymineless death in thymine-requiring Escherichia coli is arrested immediately and reversibly by nitrogenation if the bacterial population is growing in a medium containing a carbon source that can only be metabolized aer...

متن کامل

Thymineless 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 کامل

A survey about prophage induction ability in Escherichia coli K-12(λ) by ethnic medicinal plants of Kohgiluyeh va Boyerahmad, Iran

Background and objectives: There is a growing trend towards investigating natural products as sources of compounds with biological effects and many researches have been carried out in order to find effective medications against many diseases. Cancer is no exception and studies focusing on evaluating the effects of different materials on DNA, give valuable information in cancer researches and ca...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of bacteriology

دوره 102 1  شماره 

صفحات  -

تاریخ انتشار 1970