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Small GTPases comprise a superfamily of over 167 proteins in the human genome and are critical regulators of a variety of pathways including cell migration and proliferation. Despite the importance of these proteins in cell signaling, a standardized approach for controlling small GTPase activation within living cells is lacking. Herein, we report a split-protein-based approach to directly activate small GTPase signaling in living cells. Importantly, our fragmentation site can be applied across the small GTPase superfamily. We highlight the utility of these standardized parts by demonstrating the ability to directly modulate the activity of four different small GTPases with user-defined inputs, providing a plug and play system for direct activation of small GTPases in living cells.

Citation

Yuchen He, Benjamin M Faulkner, Meaghan A Roberti, Dana K Bassford, Cliff I Stains. Standardized Parts for Activation of Small GTPase Signaling in Living Cells. bioRxiv : the preprint server for biology. 2024 Jan 03


PMID: 38260610

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