Efficient screening of ligand-receptor complex formation using fluorescence labeling and size-exclusion chromatography.

Abstract:

:Evidence of a complex formation is a crucial step in the structural studies of ligand-receptor interactions. Here we presented a simple and fast approach for qualitative screening of the complex formation between the chimeric extracellular domain of the nicotinic acetylcholine receptor (α7-ECD) and three-finger proteins. Complex formation of snake toxins α-Bgtx and WTX, as well as of recombinant analogs of human proteins Lynx1 and SLURP-1, with α7-ECD was confirmed using fluorescently labeled ligands and size-exclusion chromatography with simultaneous absorbance and fluorescence detection. WTX/α7-ECD complex formation also was confirmed by cryo-EM. The proposed approach could easily be adopted to study the interaction of other receptors with their ligands.

authors

Kulbatskii DS,Shulepko MA,Sluchanko NN,Yablokov EO,Kamyshinsky RA,Chesnokov YM,Kirpichnikov MP,Lyukmanova EN

doi

10.1016/j.bbrc.2020.08.021

subject

Has Abstract

pub_date

2020-10-29 00:00:00

pages

127-133

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(20)31566-7

journal_volume

532

pub_type

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