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Updated: May 14, 2026
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High-Throughput Optogenetics Experiments in Yeast Using the Automated Platform Lustro
Published on: August 4, 2023
EL222-Based Optogenetic Gene Regulation in Methylotrophic Yeasts: Mechanisms, Applications, and Future Directions
Riya Joon1, Rhythm Phutela1, Prashant Khare1
1Xenesis, Absolute, Gurugram, Haryana, India.
Yeast (Chichester, England)
|May 13, 2026
Summary
Optogenetics offers a methanol-free method for protein production in yeasts like Pichia pastoris. The EL222 system uses light to control gene expression, enabling safer and more efficient bioprocessing.
Area of Science:
- Biotechnology
- Synthetic Biology
- Molecular Biology
Background:
- Methylotrophic yeasts, like Pichia pastoris, are valuable for protein production due to strong promoters.
- Methanol induction, while effective, poses safety and cost challenges (toxicity, flammability, high oxygen demand).
Purpose of the Study:
- To explore alternative, non-chemical induction strategies for heterologous protein production in yeast.
- To review advances in yeast optogenetics, focusing on the EL222 system for light-controlled gene expression.
Main Methods:
- Utilizing light-sensitive proteins (phytochromes, cryptochromes, LOV, UVR8) for optogenetic control of gene expression.
- Implementing the EL222 optogenetic system for regulating protein production in Pichia pastoris.
- Applying EL222-based circuits in Saccharomyces cerevisiae for synthetic biology and metabolic engineering.
Main Results:
- Optogenetic systems provide non-invasive, precise, and reversible control over gene activity.
- The EL222 system demonstrates successful light-controlled heterologous protein production in P. pastoris.
- EL222 circuits show broad applicability in yeast synthetic biology and metabolic engineering.
Conclusions:
- Optogenetics, particularly the EL222 system, offers a safer, more controllable, and energy-efficient alternative to methanol induction.
- This technology has the potential to significantly advance both fundamental research and industrial bioprocessing in yeast.
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