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Literature DB >> 4577791

Nucleotide sequence divergence in the -chain-structural genes of tryptophan synthetase from Escherichia coli, Salmonella typhimurium, and Aerobacter aerogenes.

Abstract

Two different estimates were obtained for the extent of nucleotide sequence divergence in the structural genes of the tryptophan synthetase alpha-chains of Escherichia coli, Salmonella typhimurium, and Aerobacter aerogenes. One estimate was based on comparisons of the amino acid sequences of the respective alpha chains. The other was derived from measurements of the thermal stability of RNA-DNA hybrids formed with phage DNA carrying the alpha-chain structural gene of E. coli and labeled messenger RNA from the three bacterial species. Comparison of the two estimates suggests that during the course of evolution synonymous codon changes have accumulated in the alpha-chain-structural genes.

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Year: 1973 PMID： 4577791 PMCID： PMC433437 DOI： 10.1073/pnas.70.4.1112

Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205

14 in total

1. An approach to the measurement of genetic relatedness among organisms.

Authors: B J MCCARTHY; E T BOLTON
Journal: Proc Natl Acad Sci U S A Date: 1963-07 Impact factor: 11.205

2. The amino acid sequence of the A protein (alpha subunit) of the tryptophan synthetase of Escherichia coli.

Authors: J R Guest; G R Drapeau; B C Carlton; C Yanofsky
Journal: J Biol Chem Date: 1967-11-25 Impact factor: 5.157

3. Transcription of the tryptophan operon in polarity mutants of Escherichia coli. I. Characterization of the tryptophan messenger RNA of polar mutants.

Authors: F Imamoto; C Yanofsky
Journal: J Mol Biol Date: 1967-08-28 Impact factor: 5.469

4. Altered base ratios in the DNA of an Escherichia coli mutator strain.

Authors: E C Cox; C Yanofsky
Journal: Proc Natl Acad Sci U S A Date: 1967-11 Impact factor: 11.205

5. A quantitative assay for DNA-RNA hybrids with DNA immobilized on a membrane.

Authors: D Gillespie; S Spiegelman
Journal: J Mol Biol Date: 1965-07 Impact factor: 5.469

6. Rate of fixation of nucleotide substitutions in evolution.

Authors: C D Laird; B L McConaughy; B J McCarthy
Journal: Nature Date: 1969-10-11 Impact factor: 49.962

7. Evolutionary rate at the molecular level.

Authors: M Kimura
Journal: Nature Date: 1968-02-17 Impact factor: 49.962

8. Non-Darwinian evolution.

Authors: J L King; T H Jukes
Journal: Science Date: 1969-05-16 Impact factor: 47.728

9. Transcription of the operator proximal and distal ends of the tryptophan operon: evidence that trpE and trpA are the delimiting structural genes.

Authors: J K Rose; C Yanofsky
Journal: J Bacteriol Date: 1971-10 Impact factor: 3.490

10. Tryptophan messenger ribonucleic acid elongation rates and steady-state levels of tryptophan operon enzymes under various growth conditions.

Authors: J K Rose; R D Mosteller; C Yanofsky
Journal: J Mol Biol Date: 1970-08 Impact factor: 5.469

11 in total

1. Amino-terminal sequences of indoleglycerol phosphate synthetase of Escherichia coli and Salmonella typhimurium.

Authors: S S Li; J Hanlon; C Yanofsky
Journal: J Bacteriol Date: 1975-08 Impact factor: 3.490

2. Nucleotide sequences of trpA of Salmonella typhimurium and Escherichia coli: an evolutionary comparison.

Authors: B P Nichols; C Yanofsky
Journal: Proc Natl Acad Sci U S A Date: 1979-10 Impact factor: 11.205

3. The functional significance of the evolutionary divergence between the tryptophan operons of Escherichia coli and Salmonella typhimurium.

Authors: T E Creighton
Journal: J Mol Evol Date: 1974-11-29 Impact factor: 2.395

Nucleotide sequence divergence in the -chain-structural genes of tryptophan synthetase from Escherichia coli, Salmonella typhimurium, and Aerobacter aerogenes.

1. An approach to the measurement of genetic relatedness among organisms.

2. The amino acid sequence of the A protein (alpha subunit) of the tryptophan synthetase of Escherichia coli.

3. Transcription of the tryptophan operon in polarity mutants of Escherichia coli. I. Characterization of the tryptophan messenger RNA of polar mutants.

4. Altered base ratios in the DNA of an Escherichia coli mutator strain.

5. A quantitative assay for DNA-RNA hybrids with DNA immobilized on a membrane.

6. Rate of fixation of nucleotide substitutions in evolution.

7. Evolutionary rate at the molecular level.

8. Non-Darwinian evolution.

9. Transcription of the operator proximal and distal ends of the tryptophan operon: evidence that trpE and trpA are the delimiting structural genes.

10. Tryptophan messenger ribonucleic acid elongation rates and steady-state levels of tryptophan operon enzymes under various growth conditions.

1. Amino-terminal sequences of indoleglycerol phosphate synthetase of Escherichia coli and Salmonella typhimurium.

2. Nucleotide sequences of trpA of Salmonella typhimurium and Escherichia coli: an evolutionary comparison.

3. The functional significance of the evolutionary divergence between the tryptophan operons of Escherichia coli and Salmonella typhimurium.

4. On some principles governing molecular evolution.

Review 5. Gene rearrangements in the evolution of the tryptophan synthetic pathway.

6. Nucleotide sequence divergence among DNA fractions of different syngens of Tetrahymena pyriformis.

7. Tryptophan operon regulation in interspecific hybrids of enteric bacteria.

8. Conservation of transfer ribonucleic acid and 5S ribonucleic acid cistrons in Enterobacteriaceae.

9. Conservation and variation of nucleotide sequences within related bacterial genomes: enterobacteria.

10. Amino-terminal sequence of the tryptophan synthetase alpha chain of Bacillus subtilis.