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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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Cyanobacteria are a diverse group of oxygenic, phototrophic bacteria that played a pivotal role in converting Earth’s atmosphere from anoxic to oxygen-rich billions of years ago. They exhibit remarkable morphological diversity, ranging from unicellular forms to filamentous types, with cell sizes varying between 0.5 μm and 100 μm. Cyanobacteria are classified into five groups: Chroococcales (unicellular, dividing by binary fission), Pleurocapsales (unicellular, dividing by...
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Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
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Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters
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Circadian rhythms: hijacking the cyanobacterial clock.

Nathaniel P Hoyle1, John S O'Neill

  • 1MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.

Current Biology : CB
|December 7, 2013
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Summary
This summary is machine-generated.

Scientists reprogrammed the cyanobacteria circadian clock to boost protein production yields. This breakthrough advances practical applications for sustainable biotechnology and a greener future.

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Area of Science:

  • Synthetic Biology
  • Microbial Biotechnology
  • Circadian Biology

Background:

  • Cyanobacteria possess intrinsic circadian clocks regulating various cellular processes.
  • Optimizing heterologous protein production in microbial systems is crucial for biotechnology.
  • Current methods for enhancing protein yields often face limitations.

Purpose of the Study:

  • To investigate the potential of reprogramming the cyanobacteria circadian clock.
  • To enhance heterologous protein production yields using this approach.
  • To establish a foundation for sustainable biotechnological applications.

Main Methods:

  • Genetic manipulation of key circadian clock components in cyanobacteria.
  • Engineering cyanobacteria strains for heterologous protein expression.
  • Quantitative analysis of protein yields under reprogrammed clock conditions.

Main Results:

  • Demonstrated successful reprogramming of the cyanobacteria circadian clock.
  • Achieved significant improvements in heterologous protein production yields.
  • Validated the efficacy of the engineered circadian system.

Conclusions:

  • Reprogramming the circadian clock is a viable strategy to enhance protein production in cyanobacteria.
  • This research paves the way for more efficient and sustainable biotechnological manufacturing.
  • The findings support the development of 'green' bioproduction systems.