ArticleBiophysical journal2010
Increased sensitivity and extended range of distance measurements in spin-labeled membrane proteins: Q-band double electron-electron resonance and nanoscale bilayers.
Article in Biophysical journal, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.
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Who cites it
60 citing papers in PubMed, 116 citations in OpenAlex.
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- Tracking Copper sensing operon Repressor (CsoR) oligomerization in solution using Electron Paramagnetic Resonance spectroscopy.Protein science : a publication of the Protein Society · 2025Article
- Double Quantum Coherence ESR at Q-Band Enhances the Sensitivity of Distance Measurements at Submicromolar Concentrations.The journal of physical chemistry letters · 2023Article
- Electron paramagnetic resonance spectroscopic characterization of the human KCNE3 protein in lipodisq nanoparticles for structural dynamics of membrane proteins.Biophysical chemistry · 2023Article
- Conformation of influenza AM2 membrane protein in nanodiscs and liposomes.Biochimica et biophysica acta. Biomembranes · 2023Article
- Proton-driven alternating access in a spinster lipid transporter.Nature communications · 2022Article
- Integrated AlphaFold2 and DEER investigation of the conformational dynamics of a pH-dependent APC antiporter.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Article
- Electron Paramagnetic Resonance as a Tool for Studying Membrane Proteins.Biomolecules · 2020Review
- Characterization of the Human KCNQ1 Voltage Sensing Domain (VSD) in Lipodisq Nanoparticles for Electron Paramagnetic Resonance (EPR) Spectroscopic Studies of Membrane Proteins.The journal of physical chemistry. B · 2020Article
- Sequence and structural determinants of ligand-dependent alternating access of a MATE transporter.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- PELDOR/DEER: An Electron Paramagnetic Resonance Method to Study Membrane Proteins in Lipid Bilayers.Methods in molecular biology (Clifton, N.J.) · 2020Article
- Probing the solution structure of the E. coli multidrug transporter MdfA using DEER distance measurements with nitroxide and Gd(III) spin labels.Scientific reports · 2019Article
- Mechanism of allosteric modulation of P-glycoprotein by transport substrates and inhibitors.Science (New York, N.Y.) · 2019Article
- Conformational Changes and Membrane Interaction of the Bacterial Phospholipase, ExoU: Characterization by Site-Directed Spin Labeling.Cell biochemistry and biophysics · 2019Article
- Structural, functional, and behavioral insights of dopamine dysfunction revealed by a deletion inProceedings of the National Academy of Sciences of the United States of America · 2019Article
- Enhancing sensitivity of Double Electron-Electron Resonance (DEER) by using Relaxation-Optimized Acquisition Length Distribution (RELOAD) scheme.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2019Article
- The voltage-gated sodium channel pore exhibits conformational flexibility during slow inactivation.The Journal of general physiology · 2018Article
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2 authors at 1 institution in 1 country.
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Abstract
We report a significant methodological advance in the application of double electron-electron resonance (DEER) spectroscopy to measure long-range distances in spin-labeled membrane proteins. In the pseudo two-dimensional environment of proteoliposomes, a steep intermolecular background shapes DEER signals leading to long accumulation times, complicating data analysis and reducing the maximal measurable distances from 70 A down to approximately 40-50 A. To eliminate these limitations, we took advantage of the homogeneity and monodispersity of a class of discoidal nanoscale phospholipid bilayers in conjunction with the micromolar DEER sensitivity at Q-band (34 GHz) microwave frequency. Spin-labeled mutants of the ABC transporter MsbA were functionally reconstituted at a ratio of one functional dimer per nanoscale apolipoprotein-bound bilayer (NABB). DEER echo intensities from NABB-reconstituted MsbA have linear baselines reflecting a three-dimensional spatial distribution. This results in an order-of-magnitude higher sensitivity at Q-band relative to proteoliposomes and restores the maximal observable distance effectively increasing experimental throughput. The advances described here set the stage for the use of DEER spectroscopy to analyze conformational dynamics of sample-limited eukaryotic membrane proteins.
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