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Related Concept Videos

Elastin is Responsible for Tissue Elasticity01:12

Elastin is Responsible for Tissue Elasticity

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Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. The main property of elastin is that it will return to its original shape after being stretched or compressed. Elastic fibers are prominent in elastic tissues found in skin and the elastic ligaments of the vertebral column.
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
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Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...
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Production of Elastin-like Protein Hydrogels for Encapsulation and Immunostaining of Cells in 3D
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Graphene-based materials functionalized with elastin-like polypeptides.

Eddie Wang1, Malav S Desai, Kwang Heo

  • 1Department of Bioengineering, University of California, Berkeley , Berkeley, California 94720, United States.

Langmuir : the ACS Journal of Surfaces and Colloids
|February 12, 2014
PubMed
Summary
This summary is machine-generated.

Researchers functionalized graphene materials with genetically engineered proteins, creating hybrid nanocomposites with tunable thermo- and photoresponsive behaviors for biomedical applications.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Graphene and graphene oxide (GO) are promising nanomaterials for biomedical use.
  • Functionalization is crucial for controlling graphene's properties and adding bioactivity.
  • Existing methods for graphene functionalization can be complex.

Purpose of the Study:

  • To develop a versatile genetic engineering strategy for functionalizing graphene-based materials.
  • To create novel graphene-protein nanocomposites with stimuli-responsive properties.
  • To demonstrate the potential of these materials for future biomedical applications.

Main Methods:

  • Functionalization of chemical vapor deposition (CVD)-grown graphene and graphene oxide.
  • Utilizing a genetically engineered elastin-like polypeptide fused to a graphene-binding peptide.
  • Characterization of the resulting hybrid materials for responsiveness and bioactivity.

Main Results:

  • The functionalized graphene and graphene oxide hybrid materials exhibited significant thermo- and photoresponsive behaviors.
  • The genetic engineering approach enabled facile introduction of bioactivity to reduced graphene oxide.
  • Demonstrated the successful creation of tunable graphene-protein nanocomposites.

Conclusions:

  • Genetically engineered elastin-like polypeptides fused to graphene-binding peptides offer a powerful tool for graphene functionalization.
  • These graphene-protein nanocomposites possess tunable stimuli-responsive properties.
  • The developed strategy holds promise for advancing the use of graphene in diverse biomedical applications.