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Related Concept Videos

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...

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Related Experiment Video

Updated: May 9, 2026

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions
10:02

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions

Published on: May 27, 2021

Membrane protein structure and dynamics probed by MicroED.

Orel Paz1,2, Tamir Gonen1,2,3,4

  • 1Department of Biological Chemistry, University of California Los Angeles, Los Angeles CA 90095, U.S.A.

Biochemical Society Transactions
|May 8, 2026
PubMed
Summary
This summary is machine-generated.

Microcrystal Electron Diffraction (MicroED) enables membrane protein structure determination from nanocrystals. This method overcomes limitations of traditional techniques, revealing crucial protein interactions and dynamics.

Keywords:
MicroEDcryoEMcrystalmembrane proteinsmicrocrystal electron diffraction

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Method to Visualize and Analyze Membrane Interacting Proteins by Transmission Electron Microscopy
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Method to Visualize and Analyze Membrane Interacting Proteins by Transmission Electron Microscopy

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

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Related Experiment Videos

Last Updated: May 9, 2026

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions
10:02

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions

Published on: May 27, 2021

Method to Visualize and Analyze Membrane Interacting Proteins by Transmission Electron Microscopy
10:49

Method to Visualize and Analyze Membrane Interacting Proteins by Transmission Electron Microscopy

Published on: March 5, 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

Area of Science:

  • Structural biology
  • Biochemistry
  • Membrane protein research

Background:

  • Membrane proteins are vital for cellular functions but challenging to study structurally due to their nature and size.
  • Traditional methods like X-ray crystallography and cryo-electron microscopy face limitations with membrane proteins.

Purpose of the Study:

  • To review the advancements and applications of Microcrystal Electron Diffraction (MicroED) for membrane protein structure determination.
  • To highlight MicroED's capability in studying proteins in near-native lipid environments.

Main Methods:

  • Microcrystal Electron Diffraction (MicroED) applied to membrane protein nanocrystals.
  • Advancements including focused ion-beam milling and high-throughput data collection.
  • Analysis of junction-forming proteins, G protein-coupled receptors, and ion channels.

Main Results:

  • MicroED allows structure determination from small membrane protein crystals.
  • Improved MicroED techniques facilitate the investigation of protein dynamics.
  • Revealed physiologically relevant assemblies, lipid interactions, and functional states.

Conclusions:

  • MicroED is a powerful technique for overcoming barriers in membrane protein structural biology.
  • It provides insights into protein function and interactions unattainable by other methods.
  • Advancements in MicroED continue to expand its applicability to complex membrane protein systems.