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Related Experiment Video

Updated: Jun 15, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

Structural study of the membrane protein MscL using cell-free expression and solid-state NMR.

Alaa Abdine1, Michiel A Verhoeven, Kyu-Ho Park

  • 1UMR 7099, CNRS and Université Paris Diderot, IBPC, 13 rue Pierre et Marie Curie, F-75005 Paris, France.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|March 3, 2010
PubMed
Summary

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Solid-state NMR now enables studying membrane proteins within their native lipid bilayers. Cell-free expression allows selective protein labeling, reducing spectral crowding for structural analysis.

Area of Science:

  • Biophysics
  • Structural Biology
  • Biochemistry

Background:

  • High-resolution membrane protein structures are typically determined by X-ray crystallography using detergent-solubilized samples.
  • Solid-state NMR offers an alternative approach to study integral membrane proteins within their native membrane environment.
  • Cell-free expression systems facilitate the production of membrane proteins tailored for NMR studies.

Purpose of the Study:

  • To present an in situ solid-state NMR study of a membrane protein.
  • To demonstrate the utility of selective isotopic labeling via cell-free expression for improving NMR spectra.
  • To advance the structural determination of membrane proteins using solid-state NMR.

Main Methods:

  • Utilized cell-free expression for selective labeling of a membrane protein.

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Examining the Conformational Dynamics of Membrane Proteins in situ with Site-directed Fluorescence Labeling
11:55

Examining the Conformational Dynamics of Membrane Proteins in situ with Site-directed Fluorescence Labeling

Published on: May 29, 2011

Related Experiment Videos

Last Updated: Jun 15, 2026

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
14:55

Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy

Published on: September 17, 2017

Examining the Conformational Dynamics of Membrane Proteins in situ with Site-directed Fluorescence Labeling
11:55

Examining the Conformational Dynamics of Membrane Proteins in situ with Site-directed Fluorescence Labeling

Published on: May 29, 2011

  • Reconstituted the MscL (mechano-sensitive channel of large conductance) into a hydrated lipid bilayer.
  • Performed in situ solid-state NMR spectroscopy on the reconstituted MscL.

    • Main Results:

    • Achieved selective isotopic labeling of MscL using cell-free expression.
    • Observed significantly reduced spectral crowding in the selectively labeled MscL sample compared to uniformly labeled samples.
    • Demonstrated the feasibility of studying membrane proteins in their native-like environment via solid-state NMR.

    Conclusions:

    • Cell-free expression coupled with solid-state NMR is a powerful approach for membrane protein structural studies.
    • Selective labeling significantly simplifies NMR spectra, aiding in spectral assignment.
    • This methodology represents a crucial advancement towards high-resolution structure determination of membrane proteins by solid-state NMR.