@inbook{a3fffc6a1bef4cef957841ada940ace0,
title = "Isotopic Labeling of Eukaryotic Membrane Proteins for NMR Studies of Interactions and Dynamics",
abstract = "Membrane proteins, and especially G-protein coupled receptors (GPCRs), are increasingly important targets of structural biology studies due to their involvement in many biomedically critical pathways in humans. These proteins are often highly dynamic and thus benefit from studies by NMR spectroscopy in parallel with complementary crystallographic and cryo-EM analyses. However, such studies are often complicated by a range of practical concerns, including challenges in preparing suitably isotopically labeled membrane protein samples, large sizes of protein/detergent or protein/lipid complexes, and limitations on sample concentrations and stabilities. Here we describe our approach to addressing these challenges via the use of simple eukaryotic expression systems and modified NMR experiments, using the human adenosine A2A receptor as an example. Protocols are provided for the preparation of U-2H (13C,1H-Ile δ1)-labeled membrane proteins from overexpression in the methylotrophic yeast Pichia pastoris, as well as techniques for studying the fast ns–ps sidechain dynamics of the methyl groups of such samples. We believe that, with the proper optimization, these protocols should be generalizable to other GPCRs and human membrane proteins.",
keywords = "Dynamics, GPCRs, Isotopic labeling, Membrane proteins, NMR spectroscopy, Pichia pastoris, Relaxation",
author = "Igor Dikiy and Clark, {Lindsay D.} and Gardner, {Kevin H} and Rosenbaum, {Daniel M}",
note = "Funding Information: Research detailed herein was supported by the National Science Foundation (Grant 1000136529 to L.D.C.), the American Heart Association (Grant 16PRE27200004 to L.D.C., the Welch Foundation (I-1770 to D.M.R), a Packard Foundation Fellowship (to D.M.R.), the Mallinckrodt Foundation (to D.M.R), and the National Institutes of Health (F32 GM119311 to I.D., R01 GM113050 to D.M.R., and R01 GM106239 to K.H.G.). Reagents for NMR spectroscopy were generously provided by a research award from Cambridge Isotope Laboratories, Inc. Publisher Copyright: {\textcopyright} 2019 Elsevier Inc.",
year = "2019",
month = jan,
day = "1",
doi = "10.1016/bs.mie.2018.08.030",
language = "English (US)",
isbn = "9780128138601",
series = "Methods in Enzymology",
publisher = "Academic Press Inc.",
pages = "37--65",
editor = "Wand, {A. Joshua}",
booktitle = "Biological NMR Part A",
}