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Related Concept Videos

Cryo-electron Microscopy01:28

Cryo-electron Microscopy

Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Studying the Cytoskeleton01:17

Studying the Cytoskeleton

The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...

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Do's and Don'ts of Cryo-electron Microscopy: A Primer on Sample Preparation and High Quality Data Collection for Macromolecular 3D Reconstruction
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Do's and Don'ts of Cryo-electron Microscopy: A Primer on Sample Preparation and High Quality Data Collection for Macromolecular 3D Reconstruction

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Structural physiology based on electron crystallography.

Yoshinori Fujiyoshi1

  • 1Department of Biophysics, Structural Physiology, Graduate School of Science, Kyoto University, Oiwake, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan. yoshi@em.biophys.kyoto-u.ac.jp

Protein Science : a Publication of the Protein Society
|March 19, 2011
PubMed
Summary

Advancements in cryo-electron microscopy enable detailed structural analysis of membrane proteins, offering insights into neural system functions and development. This structural physiology approach reveals molecular mechanisms behind brain development and function.

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Assessing Two-dimensional Crystallization Trials of Small Membrane Proteins for Structural Biology Studies by Electron Crystallography

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Assessing Two-dimensional Crystallization Trials of Small Membrane Proteins for Structural Biology Studies by Electron Crystallography
09:23

Assessing Two-dimensional Crystallization Trials of Small Membrane Proteins for Structural Biology Studies by Electron Crystallography

Published on: October 29, 2010

Area of Science:

  • Neuroscience
  • Structural Biology
  • Biophysics

Background:

  • Understanding how experiences shape adult traits and abilities remains a challenge in brain science.
  • Molecular mechanisms underlying developmental influences on neural and cognitive functions are largely unknown.
  • Electron microscopy advancements are crucial for elucidating biological structure-function relationships.

Purpose of the Study:

  • Introduce the emerging field of structural physiology.
  • Detail the development of cryo-electron microscopy for biological structure analysis.
  • Discuss technological aspects of membrane protein structural analysis using cryo-electron microscopy.
  • Review structural and functional insights into membrane proteins.

Main Methods:

  • Utilizing cryo-electron microscopy with helium-cooled stages for high-resolution imaging.
  • Applying electron crystallography to analyze membrane protein structures within lipid bilayers.
  • Achieving resolutions exceeding 3 Å for detailed molecular structure determination.

Main Results:

  • Established electron crystallography as a key technique for membrane protein structure determination.
  • Enabled high-resolution structural analysis of membrane proteins in near-native environments.
  • Provided a structural basis for understanding signal transduction in neural cells.

Conclusions:

  • Cryo-electron microscopy and structural physiology offer powerful tools to investigate complex biological questions.
  • High-resolution structural data of membrane proteins are essential for understanding neural system functions.
  • Technological innovation in microscopy drives progress in deciphering molecular mechanisms of development and function.