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Updated: Nov 11, 2025

Spatiotemporal Control of Protein Activity through Optogenetic Allosteric Regulation
Published on: October 4, 2024
A platform for post-translational spatiotemporal control of cellular proteins
Brianna Jayanthi1, Bhagyashree Bachhav2, Zengyi Wan3
1Systems, Synthetic and Physical Biology Graduate Program, Rice University, Houston, TX, USA.
Researchers developed a novel platform using nanobodies to control protein location within cells. This tool enables precise spatial and temporal regulation of target proteins for biological research and synthetic biology applications.
Area of Science:
- Cellular Biology
- Molecular Biology
- Synthetic Biology
Background:
- Mammalian cells rely on precise spatiotemporal protein regulation for information processing.
- Engineering cellular networks requires effective tools for controlling protein levels in specific subcellular locations.
Purpose of the Study:
- To develop a platform for target-specific control of protein destination and dynamics.
- To enable manipulation of protein localization and degradation rates within cells.
Main Methods:
- Developed bifunctional molecules with target-specific nanobodies and universal localization/degradation sequences.
- Investigated nanobody-mediated localization dependence on expression levels.
- Utilized multiple nanobodies with distinct sequences for regulated localization.
- Integrated the platform within orthogonal genetic circuits for temporal control.
Main Results:
- Demonstrated nanobody-mediated control over protein subcellular localization.
- Showcased regulation of localization extent by combining multiple nanobodies.
- Achieved transcriptional and temporal control over spatial protein regulation.
- Validated the platform's utility in orthogonal genetic circuits.
Conclusions:
- The platform offers an innovative tool for controlling protein subcellular localization.
- This technology facilitates investigation of protein function and regulation of synthetic gene circuits.
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