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Related Concept Videos

Synthetic Biology02:55

Synthetic Biology

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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Protein Networks02:26

Protein Networks

An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
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Protein Networks

An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
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Propagation of Waves01:07

Propagation of Waves

When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
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Lagging Strand Synthesis01:59

Lagging Strand Synthesis

During replication, the complementary strands in double-stranded DNA are synthesized at different rates. Replication first begins on the leading strand. Replication starts later, occurs more slowly, and proceeds discontinuously on the lagging strand.
There are several major differences between synthesis of the leading strand and synthesis of the lagging strand. 1) Leading strand synthesis happens in the direction of replication fork opening, whereas lagging strand synthesis happens in the...
Lagging Strand Synthesis01:59

Lagging Strand Synthesis

During replication, the complementary strands in double-stranded DNA are synthesized at different rates. Replication first begins on the leading strand. Replication starts later, occurs more slowly, and proceeds discontinuously on the lagging strand.
There are several major differences between synthesis of the leading strand and synthesis of the lagging strand. 1) Leading strand synthesis happens in the direction of replication fork opening, whereas lagging strand synthesis happens in the...

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Spatial waves in synthetic biochemical networks.

Adrien Padirac1, Teruo Fujii, André Estévez-Torres

  • 1LIMMS/CNRS-IIS, The University of Tokyo , Komaba 4-6-2, Meguro-ku, Tokyo 153-8505, Japan.

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|June 5, 2013
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Researchers observed traveling chemical waves and spirals using DNA and enzymes. This groundbreaking study demonstrates predator-prey chemical dynamics in a lab setting, opening new avenues for studying chemical pattern formation.

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Area of Science:

  • Chemical kinetics
  • Biochemistry
  • Systems chemistry

Background:

  • Chemical reaction networks are crucial for understanding complex systems.
  • Spatiotemporal pattern formation is a fundamental concept in chemistry and biology.
  • Previous studies have explored pattern formation, but experimental observation of predator-prey waves in a bottom-up chemical network is novel.

Purpose of the Study:

  • To experimentally observe traveling concentration waves and spirals in a synthetic chemical reaction network.
  • To demonstrate predator-prey dynamics in a laboratory setting using a bottom-up approach.
  • To provide a tunable platform for studying spatiotemporal order formation in chemistry.

Main Methods:

  • Constructing a chemical reaction network using DNA oligonucleotides for connectivity and purified enzymes for reactivity.
  • Utilizing a predator-prey oscillator mechanism.
  • Measuring wave velocities using microscopy and image analysis.

Main Results:

  • Successfully observed traveling concentration waves and spirals in the designed chemical network.
  • Demonstrated the first experimental observation of predator-prey waves in the laboratory.
  • Measured wave velocities in the range of 80-400 μm min(-1).
  • Developed a reaction-diffusion model that quantitatively agrees with experimental findings.

Conclusions:

  • Bottom-up chemical reaction networks, particularly those based on nucleic acids, can exhibit complex spatiotemporal behaviors like waves and spirals.
  • The predator-prey oscillator mechanism is viable for generating such dynamic patterns.
  • Nucleic acid reaction networks offer tunable parameters (topology, rate constants, diffusion coefficients), facilitating the study of spatiotemporal order formation principles.