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Curr Opin Chem Biol. 2019 Feb;48:106-113. doi: 10.1016/j.cbpa.2018.11.010. Epub 2018 Dec 5.

A bright future: optogenetics to dissect the spatiotemporal control of cell behavior.

Author information

1
Department of Molecular Biology, Princeton University, Princeton NJ 08544, United States.
2
Department of Molecular Biology, Princeton University, Princeton NJ 08544, United States. Electronic address: toettcher@princeton.edu.

Abstract

Cells sense, process, and respond to extracellular information using signaling networks: collections of proteins that act as precise biochemical sensors. These protein networks are characterized by both complex temporal organization, such as pulses of signaling activity, and by complex spatial organization, where proteins assemble structures at particular locations and times within the cell. Yet despite their ubiquity, studying these spatial and temporal properties has remained challenging because they emerge from the entire protein network rather than a single node, and cannot be easily tuned by drugs or mutations. These challenges are being met by a new generation of optogenetic tools capable of directly controlling the activity of individual signaling nodes over time and the assembly of protein complexes in space. Here, we outline how these recent innovations are being used in conjunction with engineering-influenced experimental design to address longstanding questions in signaling biology.

PMID:
30529586
PMCID:
PMC6382565
[Available on 2020-02-01]
DOI:
10.1016/j.cbpa.2018.11.010
[Indexed for MEDLINE]

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