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Related Concept Videos

Replication in Prokaryotes01:32

Replication in Prokaryotes

DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
Many Proteins Work Together to Replicate the Chromosome
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Replication in Eukaryotes01:29

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In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
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Replication in Eukaryotes02:31

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Replication in Eukaryotes01:29

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In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
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Electrophoretic Analysis of Replication Through Structure-Prone DNA Repeats Within the SV40-Based Human Episome
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Intravesicle isothermal DNA replication.

Domenica Torino1, Cristina Del Bianco, Lindsey A Ross

  • 1Centre for Integrative Biology, University of Trento, Via delle Regole, 101 Mattarello, Italy. mansy@science.unitn.it.

BMC Research Notes
|April 19, 2011
PubMed
Summary
This summary is machine-generated.

Researchers combined bacterial DNA replication machinery with lipid vesicles to create cell-like structures. This system successfully amplified DNA isothermally within these vesicles, paving the way for evolving minimal cells.

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Area of Science:

  • Synthetic biology
  • Origin of life research
  • Biochemistry

Background:

  • Previous reconstitution of bacterial and viral DNA replication in vitro.
  • Recent advances in constructing minimal cell-like structures.
  • Combining these approaches for evolving minimal cells.

Purpose of the Study:

  • To build a minimal cell-like structure capable of evolution.
  • To combine membrane encapsulation with genome replication.
  • To test bacterial isothermal DNA replication within lipid vesicles.

Main Methods:

  • Utilized purified genomic replication protein components from thermophilic bacteria.
  • Employed isothermal DNA amplification techniques.
  • Encapsulated replication machinery within phospholipid vesicles.

Main Results:

  • Bacterial replication components are compatible with lipid vesicle generation.
  • Encapsulation within phospholipid vesicles does not inhibit DNA replication machinery.
  • Efficient isothermal amplification of short DNA segments within vesicles was achieved.

Conclusions:

  • Bacterial isothermal DNA replication machinery functions within phospholipid vesicles.
  • Replicating cellular mimics can be constructed from purified bacterial components.
  • This work supports the development of evolving minimal cell models.