Individual proteins are synthesized continuously throughout the Escherichia coli cell cycle
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چکیده
منابع مشابه
Interrogating the Escherichia coli cell cycle by cell dimension perturbations.
Bacteria tightly regulate and coordinate the various events in their cell cycles to duplicate themselves accurately and to control their cell sizes. Growth of Escherichia coli, in particular, follows a relation known as Schaechter's growth law. This law says that the average cell volume scales exponentially with growth rate, with a scaling exponent equal to the time from initiation of a round o...
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The metabolism of 184 individual proteins was examined in exponentially growing Escherichia coli. Cells were labeled with [3H]leucine and [35S]methionine using either a pulse-chase or a continuous labeling method. Proteins were fractionated by two-dimensional gel electrophoresis and their stabilities relative to total protein were determined from the 3H/35S ratios. Forty-seven proteins appeared...
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We have described a new method for the quantitative separation of ribosomal proteins and ribosomal ribonucleic acid. A procedure for the preparation of individual ribosomal proteins by polyacrylamide gel electrophoresis is also described. By the use of gels with smaller pores, at least four of the electrophoretic components from the 30S ribosome can be split into additional protein fractions. B...
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The synthesis of the periplasmic galactose-binding protein of E. coli is regulated by events occurring during its cell cycle, and proceeds in synchronized cells for only a short period after cell division is completed. Transport activity mediated by the fl-methylgalactoside transport system follows closely the synthesis pattern of the binding protein. A mutant, E. coli BUG-6, exhibits temperatu...
متن کاملLipid synthesis during the Escherichia coli cell cycle.
Lipid synthesis was examined in Escherichia coli cells at different stage of cell division. Exponentially growing cells were pulse-labeled with appropriate isotopes for 0.1 generation time, inactivated, and separated by size on a sucrose gradient. An abrupt increase in the rate of lipid synthesis occurred which was coincident with the initiation of cross walls. In contrast, the rate of protein ...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1979
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.138.2.352-360.1979