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  2. DNA polymerase III holoenzyme - Wikipedia

    en.wikipedia.org/wiki/DNA_polymerase_III_holoenzyme

    Being the primary holoenzyme involved in replication activity, the DNA Pol III holoenzyme also has proofreading capabilities that corrects replication mistakes by means of exonuclease activity reading 3'→5' and synthesizing 5'→3'. DNA Pol III is a component of the replisome, which is located at the replication fork.

  3. DNA clamp - Wikipedia

    en.wikipedia.org/wiki/DNA_clamp

    The beta clamp is a specific DNA clamp and a subunit of the DNA polymerase III holoenzyme found in bacteria. Two beta subunits are assembled around the DNA by the gamma subunit and ATP hydrolysis; this assembly is called the pre-initiation complex. After assembly around the DNA, the beta subunits' affinity for the gamma subunit is replaced by ...

  4. DNA polymerase - Wikipedia

    en.wikipedia.org/wiki/DNA_polymerase

    DNA polymerase III holoenzyme is the primary enzyme involved in DNA replication in E. coli and belongs to family C polymerases. It consists of three assemblies: the pol III core, the beta sliding clamp processivity factor, and the clamp-loading complex. The core consists of three subunits: α, the polymerase activity hub, ɛ, exonucleolytic ...

  5. Replisome - Wikipedia

    en.wikipedia.org/wiki/Replisome

    Clamp proteins attract and tether replicative polymerases, such as DNA polymerase III, in order to extend the amount of time that a replicative polymerase stays associated with the strand. From a chemical perspective, the clamp has a slightly positive charge at its centre that is a near perfect match for the slightly negative charge of the DNA ...

  6. dnaQ - Wikipedia

    en.wikipedia.org/wiki/DnaQ

    dnaQ is the gene encoding the ε subunit of DNA polymerase III in Escherichia coli. [1] The ε subunit is one of three core proteins in the DNA polymerase complex. It functions as a 3’→5’ DNA directed proofreading exonuclease that removes incorrectly incorporated bases during replication. [2] dnaQ may also be referred to as mutD. [3]

  7. Processivity - Wikipedia

    en.wikipedia.org/wiki/Processivity

    Multiple DNA polymerases have specialized roles in the DNA replication process. In E. coli, which replicates its entire genome from a single replication fork, the polymerase DNA Pol III is the enzyme primarily responsible for DNA replication and forms a replication complex with extremely high processivity.

  8. DNA polymerase III subunit gamma/tau - Wikipedia

    en.wikipedia.org/wiki/DNA_polymerase_III_subunit...

    The τ and γ subunits are part of the DNA polymerase III holoenzyme of prokaryotes. The protein family is characterized by the well-conserved first N-terminal domain, approx. 365 amino acids. The eukaryotic equivalent to the DNA clamp loader is replication factor C, with the subunits RFC1, RFC2, RFC3, RFC4, and RFC5.

  9. Exonuclease - Wikipedia

    en.wikipedia.org/wiki/Exonuclease

    Similarly, in Salmonella typhimurium bacteria, the 3’ to 5’ editing function employed during DNA replication is also encoded by a gene, dnaQ, which specifies a 3’ to 5’ exonuclease subunit, one of the three separately encoded core proteins of the DNA polymerase III holoenzyme. [11]

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