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ParAlleL: A Novel Population-Based Approach to Biological Logic Gates.

Felipe A Millacura1, Brendan Largey1, Christopher E French1

  • 1School of Biological Sciences, Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh, United Kingdom.

Frontiers in Bioengineering and Biotechnology
|April 6, 2019
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Summary

Researchers developed ParAlleL, a novel cell-based logic system. This parallel approach enables complex biological circuits like a 3-bit adder and subtractor in bacteria, simplifying synthetic biology.

Keywords:
3-bitsEscherichia colicalculator-like displayfull adderfull subtractorparallel approach

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Area of Science:

  • Synthetic biology
  • Computational biology
  • Microbial engineering

Background:

  • Integrating multiple logic gates into larger biological devices is challenging.
  • Existing cell-based logic systems face scalability issues.

Purpose of the Study:

  • To introduce ParAlleL, a novel cell-based logic system designed for parallel processing.
  • To demonstrate the construction of complex computational functions using engineered bacteria.

Main Methods:

  • Decomposition of large circuits into smaller, parallel subcircuits.
  • Utilizing *Escherichia coli* as the cellular platform.
  • Combining subcircuit responses for a global output.

Main Results:

  • Successfully engineered a functional 3-bit full adder and full subtractor in *E. coli*.
  • Developed a calculator-style display showing results from 0 to 7 based on 3-bit binary inputs.
  • Demonstrated complex computational tasks without intricate genetic engineering.

Conclusions:

  • ParAlleL offers a scalable and parallel design strategy for cell-based logic systems.
  • This approach simplifies the creation and analysis of complex biological circuits.
  • Facilitates advancements in synthetic biology applications using a parallel processing paradigm.