Structure of the dnaA and DnaA-box region in the Mycoplasma capricolum chromosome: conservation and variations in the course of evolution.
Identifieur interne : 004714 ( Main/Exploration ); précédent : 004713; suivant : 004715Structure of the dnaA and DnaA-box region in the Mycoplasma capricolum chromosome: conservation and variations in the course of evolution.
Auteurs : M Q Fujita [Japon] ; H. Yoshikawa ; N. OgasawaraSource :
- Gene [ 0378-1119 ] ; 1992.
Descripteurs français
- KwdFr :
- Alignement de séquences, Bacillus subtilis (génétique), Biosynthèse des protéines, Chromosomes de bactérie, Données de séquences moléculaires, Escherichia coli (génétique), Gènes bactériens, Micrococcus luteus (génétique), Mycoplasma (génétique), Protéines bactériennes (), Protéines bactériennes (génétique), Protéines de liaison à l'ADN (), Protéines de liaison à l'ADN (génétique), Pseudomonas putida (génétique), Réplication de l'ADN, Séquence d'acides aminés, Séquence nucléotidique, Variation génétique, Évolution biologique.
- MESH :
- génétique : Bacillus subtilis, Escherichia coli, Micrococcus luteus, Mycoplasma, Protéines bactériennes, Protéines de liaison à l'ADN, Pseudomonas putida.
- Alignement de séquences, Biosynthèse des protéines, Chromosomes de bactérie, Données de séquences moléculaires, Gènes bactériens, Protéines bactériennes, Protéines de liaison à l'ADN, Réplication de l'ADN, Séquence d'acides aminés, Séquence nucléotidique, Variation génétique, Évolution biologique.
English descriptors
- KwdEn :
- Amino Acid Sequence, Bacillus subtilis (genetics), Bacterial Proteins (chemistry), Bacterial Proteins (genetics), Base Sequence, Biological Evolution, Chromosomes, Bacterial, DNA Replication, DNA-Binding Proteins (chemistry), DNA-Binding Proteins (genetics), Escherichia coli (genetics), Genes, Bacterial, Genetic Variation, Micrococcus luteus (genetics), Molecular Sequence Data, Mycoplasma (genetics), Protein Biosynthesis, Pseudomonas putida (genetics), Sequence Alignment.
- MESH :
- chemical , chemistry : Bacterial Proteins, DNA-Binding Proteins.
- genetics : Bacillus subtilis, Bacterial Proteins, DNA-Binding Proteins, Escherichia coli, Micrococcus luteus, Mycoplasma, Pseudomonas putida.
- Amino Acid Sequence, Base Sequence, Biological Evolution, Chromosomes, Bacterial, DNA Replication, Genes, Bacterial, Genetic Variation, Molecular Sequence Data, Protein Biosynthesis, Sequence Alignment.
Abstract
We have previously shown that the dnaA gene and the DnaA-box region were conserved in bacteria representative of all three major branches of the eubacterial phylogenic tree: high G + C Gram+, low-G + C Gram+ and Gram-. In the present work, we determined the structure of the dnaA region of Mycoplasma capricolum and found that the dnaA gene and at least two other genes, rpmH and dnaN, were conserved in this bacterium. An unusually high level of amino acid (aa) substitutions was observed in M. capricolum DnaA. It was the case even in those aa which were well conserved in other bacterial species. The nontranslatable region upstream from the dnaA gene was also conserved in this bacterium, as it was universally found in both Gram+ and Gram- bacteria. An additional nontranslatable region downstream from the dnaA gene, which is common to Gram+ bacteria, was also found in M. capricolum, consistent with the proposal that M. capricolum is Gram+ in origin. These regions were rich in A + T and contained ten DnaA-box-like sequences (9-mers that differ from TTATCCACA by one or two bases).
DOI: 10.1016/0378-1119(92)90439-v
PubMed: 1544573
Affiliations:
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Le document en format XML
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<term>Bacterial Proteins (chemistry)</term>
<term>Bacterial Proteins (genetics)</term>
<term>Base Sequence</term>
<term>Biological Evolution</term>
<term>Chromosomes, Bacterial</term>
<term>DNA Replication</term>
<term>DNA-Binding Proteins (chemistry)</term>
<term>DNA-Binding Proteins (genetics)</term>
<term>Escherichia coli (genetics)</term>
<term>Genes, Bacterial</term>
<term>Genetic Variation</term>
<term>Micrococcus luteus (genetics)</term>
<term>Molecular Sequence Data</term>
<term>Mycoplasma (genetics)</term>
<term>Protein Biosynthesis</term>
<term>Pseudomonas putida (genetics)</term>
<term>Sequence Alignment</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Alignement de séquences</term>
<term>Bacillus subtilis (génétique)</term>
<term>Biosynthèse des protéines</term>
<term>Chromosomes de bactérie</term>
<term>Données de séquences moléculaires</term>
<term>Escherichia coli (génétique)</term>
<term>Gènes bactériens</term>
<term>Micrococcus luteus (génétique)</term>
<term>Mycoplasma (génétique)</term>
<term>Protéines bactériennes ()</term>
<term>Protéines bactériennes (génétique)</term>
<term>Protéines de liaison à l'ADN ()</term>
<term>Protéines de liaison à l'ADN (génétique)</term>
<term>Pseudomonas putida (génétique)</term>
<term>Réplication de l'ADN</term>
<term>Séquence d'acides aminés</term>
<term>Séquence nucléotidique</term>
<term>Variation génétique</term>
<term>Évolution biologique</term>
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<term>DNA-Binding Proteins</term>
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<term>Bacterial Proteins</term>
<term>DNA-Binding Proteins</term>
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<term>Micrococcus luteus</term>
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<term>Micrococcus luteus</term>
<term>Mycoplasma</term>
<term>Protéines bactériennes</term>
<term>Protéines de liaison à l'ADN</term>
<term>Pseudomonas putida</term>
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<keywords scheme="MESH" xml:lang="en"><term>Amino Acid Sequence</term>
<term>Base Sequence</term>
<term>Biological Evolution</term>
<term>Chromosomes, Bacterial</term>
<term>DNA Replication</term>
<term>Genes, Bacterial</term>
<term>Genetic Variation</term>
<term>Molecular Sequence Data</term>
<term>Protein Biosynthesis</term>
<term>Sequence Alignment</term>
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<keywords scheme="MESH" xml:lang="fr"><term>Alignement de séquences</term>
<term>Biosynthèse des protéines</term>
<term>Chromosomes de bactérie</term>
<term>Données de séquences moléculaires</term>
<term>Gènes bactériens</term>
<term>Protéines bactériennes</term>
<term>Protéines de liaison à l'ADN</term>
<term>Réplication de l'ADN</term>
<term>Séquence d'acides aminés</term>
<term>Séquence nucléotidique</term>
<term>Variation génétique</term>
<term>Évolution biologique</term>
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<front><div type="abstract" xml:lang="en">We have previously shown that the dnaA gene and the DnaA-box region were conserved in bacteria representative of all three major branches of the eubacterial phylogenic tree: high G + C Gram+, low-G + C Gram+ and Gram-. In the present work, we determined the structure of the dnaA region of Mycoplasma capricolum and found that the dnaA gene and at least two other genes, rpmH and dnaN, were conserved in this bacterium. An unusually high level of amino acid (aa) substitutions was observed in M. capricolum DnaA. It was the case even in those aa which were well conserved in other bacterial species. The nontranslatable region upstream from the dnaA gene was also conserved in this bacterium, as it was universally found in both Gram+ and Gram- bacteria. An additional nontranslatable region downstream from the dnaA gene, which is common to Gram+ bacteria, was also found in M. capricolum, consistent with the proposal that M. capricolum is Gram+ in origin. These regions were rich in A + T and contained ten DnaA-box-like sequences (9-mers that differ from TTATCCACA by one or two bases).</div>
</front>
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