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2022 - Circularized fluorescent nanodiscs for probing protein–lipid interactions

Icon Orbit Mini  Orbit mini Publication in Communications Biology (2022)

Authors:
Ren Q., Zhang S., Bao H.

Journal:
Orbit mini Publication in Communications Biology (2022) doi:10.1038/s42003-022-03443-4


Abstract: 

Protein–lipid interactions are vital for numerous transmembrane signaling pathways. However, simple tools to characterize these interactions remain scarce and are much needed to advance our understanding of signal transduction across lipid bilayers. To tackle this challenge, we herein engineer nanodisc as a robust fluorescent sensor for reporting membrane biochemical reactions. We circularize nanodiscs via split GFP and thereby create an intensity-based fluorescent sensor (isenND) for detecting membrane binding and remodeling events. We show that isenND responds robustly and specifically to the action of a diverse array of membrane-interacting proteins and peptides, ranging from synaptotagmin and synuclein involved in neurotransmission to viral fusion peptides of HIV-1 and SARS-CoV-2. Together, isenND can serve as a versatile biochemical reagent useful for basic and translational research of membrane biology.


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