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Literature DB >> 173297

Metabolic regulation of beta-galactosidase synthesis in Escherichia coli. A test for constitutive ribosome synthesis.

Abstract

The rate of differential synthesis of beta-galactosidase (alphalac) was measured in maximally induced cultures of Escherichia coli B/r with 0.01 M-inducer and 0.01 M-cyclic AMP. The value of alphalac decreases with growth rate (60% between 0.67 and 2.1 doublings/h) and after a nutritional shift-up. This decrease is presumed to reflect a decrease in the intracellular concentration of free active RNA polymerase after a shift-up, which implies that the increase in ribosome synthesis after a shift-up is due to an active induction of the ribosomal components.

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Year: 1975 PMID： 173297 PMCID： PMC1165696 DOI： 10.1042/bj1500001b

Source DB: PubMed Journal: Biochem J ISSN： 0264-6021 Impact factor: 3.857

14 in total

1. Regulatory state of ribosomal genes and physiological changes in the concentration of free ribonucleic acid polymerase in Escherichia coli.

Authors: H Bremer; D G Dalbow
Journal: Biochem J Date: 1975-07 Impact factor: 3.857

2. Macromolecular composition during steady-state growth of Escherichia coli B-r.

Authors: P P Dennis; H Bremer
Journal: J Bacteriol Date: 1974-07 Impact factor: 3.490

3. Metabolic regulation of the tryptophan operon of Escherichia coli: repressor-independent regulation of transcription initiation frequency.

Authors: J K Rose; C Yanofsky
Journal: J Mol Biol Date: 1972-08-14 Impact factor: 5.469

3. Regulatory state of ribosomal genes and physiological changes in the concentration of free ribonucleic acid polymerase in Escherichia coli.

Authors: H Bremer; D G Dalbow
Journal: Biochem J Date: 1975-07 Impact factor: 3.857

4. Constitutive and repressivle enzymes of the common pathway of aromatic biosynthesis in Escherichia coli K-12: regulation of enzyme synthesis at different growth rates.

Authors: D E Tribe; H Camakaris; J Pittard
Journal: J Bacteriol Date: 1976-09 Impact factor: 3.490

5. Gene expression in Escherichia coli B/r during partial rifampicin-mediated restrictions of transcription initiation.

Authors: R M Blumenthal; P P Dennis
Journal: Mol Gen Genet Date: 1978-09-20

6. Synthesis and function of ribonucleic acid polymerase and ribosomes in Escherichia coli B/r after a nutritional shift-up.

Authors: N Shepherd; G Churchward; H Bremer
Journal: J Bacteriol Date: 1980-09 Impact factor: 3.490

Metabolic regulation of beta-galactosidase synthesis in Escherichia coli. A test for constitutive ribosome synthesis.

1. Regulatory state of ribosomal genes and physiological changes in the concentration of free ribonucleic acid polymerase in Escherichia coli.

2. Macromolecular composition during steady-state growth of Escherichia coli B-r.

3. Metabolic regulation of the tryptophan operon of Escherichia coli: repressor-independent regulation of transcription initiation frequency.

4. Synthesis of RNA polymerase in Escherichia coli B-r growing at different rates.

5. Biosynthesis of the beta and beta' subunits of RNA polymerase in Escherichia coli.

6. Polyacrylamide gel electrophoresis in a continuous molecular sieve gradient.

7. Control of production of ribosomal protein.

8. Cleavage of structural proteins during the assembly of the head of bacteriophage T4.

Review 9. Review lecture on the growth and form of a bacterial cell.

10. The Synthesis of Ribosomes in E. coli: I. The Incorporation of C-Uracil into the Metabolic Pool and RNA.

1. Gene activities for ribosomal components in Escherichia coli B/r.

2. Synthesis time of beta-galactosidase in Escherichia coli B/r as a function of growth rate.

3. Regulatory state of ribosomal genes and physiological changes in the concentration of free ribonucleic acid polymerase in Escherichia coli.

4. Constitutive and repressivle enzymes of the common pathway of aromatic biosynthesis in Escherichia coli K-12: regulation of enzyme synthesis at different growth rates.

5. Gene expression in Escherichia coli B/r during partial rifampicin-mediated restrictions of transcription initiation.

6. Synthesis and function of ribonucleic acid polymerase and ribosomes in Escherichia coli B/r after a nutritional shift-up.

7. Analysis of enzyme induction in bacteria.

8. Physiological characterization of Escherichia coli rpoB mutants with abnormal control of ribosome synthesis.

9. rpoB mutation in Escherichia coli alters control of ribosome synthesis by guanosine tetraphosphate.

10. Transcription in bacteria at different DNA concentrations.