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Related Concept Videos

Synthetic Biology02:55

Synthetic Biology

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Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
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Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
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Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under...
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Using Synthetic Biology to Engineer Living Cells That Interface with Programmable Materials
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Programming Surface Chemistry with Engineered Cells.

Ruihua Zhang1, Keith C Heyde2, Felicia Y Scott1

  • 1Department of Biological Systems Engineering, Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24061, United States.

ACS Synthetic Biology
|May 21, 2016
PubMed
Summary
This summary is machine-generated.

Engineered E. coli cells can now control surface chemistry by synthesizing biotin on demand. This synthetic biology approach enables precise molecular assembly on functionalized surfaces for applications in tissue engineering and drug delivery.

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Area of Science:

  • Synthetic biology
  • Biochemistry
  • Materials science

Background:

  • Cells can be engineered to produce specific molecules.
  • Surface chemistry can be programmed using molecular interactions.
  • Controlled molecular assembly is crucial for various biotechnological applications.

Purpose of the Study:

  • To develop synthetic gene networks for programmable surface chemistry.
  • To engineer E. coli for inducible biotin synthesis.
  • To create functionalized surfaces for regulated enzyme assembly.

Main Methods:

  • Engineering Escherichia coli (E. coli) to overexpress biotin synthase.
  • Developing biotin- streptavidin binding-based surface functionalization.
  • Integrating engineered cells with functionalized surfaces to demonstrate controlled molecular assembly.

Main Results:

  • Successfully engineered E. coli to synthesize biotin upon biochemical induction.
  • Demonstrated selective enzyme assembly on functionalized surfaces via biotin-streptavidin interactions.
  • Validated the ability of synthetic biology to control surface chemistry and molecular assembly.

Conclusions:

  • Synthetic gene networks provide a powerful tool for programming cell surface chemistry.
  • This modular system enables precise control over molecular assembly.
  • Potential applications span tissue engineering, drug development, and drug delivery.