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Protein Complex Assembly02:41

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
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Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
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DNA replication is carried out by a large complex of proteins that act in a coordinated matter to achieve high-fidelity DNA replication. Together this complex is known as the DNA replication machinery or the replisome.
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For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
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Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
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Supramolecular Protein Assemblies Based on DNA Templates.

Chunxi Hou, Shuwen Guan, Ruidi Wang1

  • 1Department of Chemistry, University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada.

The Journal of Physical Chemistry Letters
|August 10, 2017
PubMed
Summary
This summary is machine-generated.

DNA nanotechnology enables precise construction of protein nanostructures using DNA templates. These DNA-temtemplated protein assemblies offer potential in biomaterials and biodevices.

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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Materials Science

Background:

  • DNA serves as a crucial template for protein assembly, exemplified by DNA viruses like M13.
  • The M13 virus utilizes its single DNA genome to direct the assembly of major coat protein (PVIII) monomers.

Purpose of the Study:

  • To review advancements in DNA-templated protein nanostructures.
  • To highlight the potential of these nanostructures in biomaterials and biodevices.

Main Methods:

  • Utilizing DNA templates for protein assembly through various interactions.
  • Employing DNA nanotechnology for precise 1D and 3D nanostructure design.
  • Exploring DNA-protein, protein-ligand, and protein-adapter interactions.

Main Results:

  • Successful design and construction of sophisticated DNA-templated protein nanostructures.
  • Demonstration of programmable shapes and stimuli-responsive parameters in these assemblies.
  • Identification of applications in catalysis, medicine, drug delivery, and signal transduction.

Conclusions:

  • DNA-templated protein assemblies represent a significant advancement in nanotechnology.
  • These nanostructures hold immense promise for future biomaterials and biodevices.
  • Continued research in this area will drive innovation in nanomedicine and nanobiotechnology.