The dnaA initiator protein binds separate domains in the replication origin of Escherichia coli.
Identifieur interne : 004A92 ( Main/Exploration ); précédent : 004A91; suivant : 004A93The dnaA initiator protein binds separate domains in the replication origin of Escherichia coli.
Auteurs : B Y Yung [États-Unis] ; A. KornbergSource :
- The Journal of biological chemistry [ 0021-9258 ] ; 1989.
Descripteurs français
- KwdFr :
- ADN bactérien (métabolisme), ADN superhélicoïdal (métabolisme), ADP (métabolisme), Adénosine triphosphate (métabolisme), Escherichia coli (métabolisme), Fixation compétitive, Fragments peptidiques (métabolisme), Plasmides, Protéines bactériennes (métabolisme), Protéines de liaison à l'ADN (métabolisme), Relation structure-activité, Réplication de l'ADN, Séquences d'acides nucléiques régulatrices, Température, Trypsine (pharmacologie).
- MESH :
- métabolisme : ADN bactérien, ADN superhélicoïdal, ADP, Adénosine triphosphate, Escherichia coli, Fragments peptidiques, Protéines bactériennes, Protéines de liaison à l'ADN.
- pharmacologie : Trypsine.
- Fixation compétitive, Plasmides, Relation structure-activité, Réplication de l'ADN, Séquences d'acides nucléiques régulatrices, Température.
English descriptors
- KwdEn :
- Adenosine Diphosphate (metabolism), Adenosine Triphosphate (metabolism), Bacterial Proteins (metabolism), Binding, Competitive, DNA Replication, DNA, Bacterial (metabolism), DNA, Superhelical (metabolism), DNA-Binding Proteins (metabolism), Escherichia coli (metabolism), Peptide Fragments (metabolism), Plasmids, Regulatory Sequences, Nucleic Acid, Structure-Activity Relationship, Temperature, Trypsin (pharmacology).
- MESH :
- chemical , metabolism : Adenosine Diphosphate, Adenosine Triphosphate, Bacterial Proteins, DNA, Bacterial, DNA, Superhelical, DNA-Binding Proteins, Peptide Fragments.
- metabolism : Escherichia coli.
- chemical , pharmacology : Trypsin.
- Binding, Competitive, DNA Replication, Plasmids, Regulatory Sequences, Nucleic Acid, Structure-Activity Relationship, Temperature.
Abstract
After binding to its four 9-mer boxes in the 245-base pair Escherichia coli replication origin (oriC), dnaA protein effects the formation of an "open complex" in an adjacent region made up of three 13-mers (Bramhill, D., and Kornberg, A. (1988) Cell 52, 743-755). This open complex formation requires the ATP form of dnaA protein assisted by HU protein (Sekimizu, K., Bramhill, D., and Kornberg, A. (1987) Cell 50, 259-265). We now provide direct evidence that dnaA protein binds the 13-mers, sequences that bear no resemblance to the 9-mer box. The evidence is (i) displacement of dnaA protein from the open complex by oriC or by a synthetic oligonucleotide containing the 13-mers, but not by a mutant of oriC lacking the 13-mers; (ii) filter binding of the synthetic (13-mer) oligonucleotide by dnaA protein; and (iii) requirement for the ATP form of dnaA protein assisted by HU protein for temperature-dependent binding to the 13-mer region. Controlled proteolysis of dnaA protein results in a prompt loss of oriC binding; an NH2-terminal 30-kDa peptide contains the domain that binds ATP and phospholipids known to destabilize the tightly bound ATP.
PubMed: 2539372
Affiliations:
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Le document en format XML
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<series><title level="j">The Journal of biological chemistry</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adenosine Diphosphate (metabolism)</term>
<term>Adenosine Triphosphate (metabolism)</term>
<term>Bacterial Proteins (metabolism)</term>
<term>Binding, Competitive</term>
<term>DNA Replication</term>
<term>DNA, Bacterial (metabolism)</term>
<term>DNA, Superhelical (metabolism)</term>
<term>DNA-Binding Proteins (metabolism)</term>
<term>Escherichia coli (metabolism)</term>
<term>Peptide Fragments (metabolism)</term>
<term>Plasmids</term>
<term>Regulatory Sequences, Nucleic Acid</term>
<term>Structure-Activity Relationship</term>
<term>Temperature</term>
<term>Trypsin (pharmacology)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>ADN bactérien (métabolisme)</term>
<term>ADN superhélicoïdal (métabolisme)</term>
<term>ADP (métabolisme)</term>
<term>Adénosine triphosphate (métabolisme)</term>
<term>Escherichia coli (métabolisme)</term>
<term>Fixation compétitive</term>
<term>Fragments peptidiques (métabolisme)</term>
<term>Plasmides</term>
<term>Protéines bactériennes (métabolisme)</term>
<term>Protéines de liaison à l'ADN (métabolisme)</term>
<term>Relation structure-activité</term>
<term>Réplication de l'ADN</term>
<term>Séquences d'acides nucléiques régulatrices</term>
<term>Température</term>
<term>Trypsine (pharmacologie)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Adenosine Diphosphate</term>
<term>Adenosine Triphosphate</term>
<term>Bacterial Proteins</term>
<term>DNA, Bacterial</term>
<term>DNA, Superhelical</term>
<term>DNA-Binding Proteins</term>
<term>Peptide Fragments</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Escherichia coli</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>ADN bactérien</term>
<term>ADN superhélicoïdal</term>
<term>ADP</term>
<term>Adénosine triphosphate</term>
<term>Escherichia coli</term>
<term>Fragments peptidiques</term>
<term>Protéines bactériennes</term>
<term>Protéines de liaison à l'ADN</term>
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<keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr"><term>Trypsine</term>
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<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Trypsin</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Binding, Competitive</term>
<term>DNA Replication</term>
<term>Plasmids</term>
<term>Regulatory Sequences, Nucleic Acid</term>
<term>Structure-Activity Relationship</term>
<term>Temperature</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Fixation compétitive</term>
<term>Plasmides</term>
<term>Relation structure-activité</term>
<term>Réplication de l'ADN</term>
<term>Séquences d'acides nucléiques régulatrices</term>
<term>Température</term>
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<front><div type="abstract" xml:lang="en">After binding to its four 9-mer boxes in the 245-base pair Escherichia coli replication origin (oriC), dnaA protein effects the formation of an "open complex" in an adjacent region made up of three 13-mers (Bramhill, D., and Kornberg, A. (1988) Cell 52, 743-755). This open complex formation requires the ATP form of dnaA protein assisted by HU protein (Sekimizu, K., Bramhill, D., and Kornberg, A. (1987) Cell 50, 259-265). We now provide direct evidence that dnaA protein binds the 13-mers, sequences that bear no resemblance to the 9-mer box. The evidence is (i) displacement of dnaA protein from the open complex by oriC or by a synthetic oligonucleotide containing the 13-mers, but not by a mutant of oriC lacking the 13-mers; (ii) filter binding of the synthetic (13-mer) oligonucleotide by dnaA protein; and (iii) requirement for the ATP form of dnaA protein assisted by HU protein for temperature-dependent binding to the 13-mer region. Controlled proteolysis of dnaA protein results in a prompt loss of oriC binding; an NH2-terminal 30-kDa peptide contains the domain that binds ATP and phospholipids known to destabilize the tightly bound ATP.</div>
</front>
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<country name="États-Unis"><region name="Californie"><name sortKey="Yung, B Y" sort="Yung, B Y" uniqKey="Yung B" first="B Y" last="Yung">B Y Yung</name>
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