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Related Concept Videos

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...
Membrane Fluidity01:23

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent – the...
Fluid Mosaic Model01:19

Fluid Mosaic Model

Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich with the analogy of...
Mechanisms of Membrane Domain Formation00:59

Mechanisms of Membrane Domain Formation

Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...

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Related Experiment Video

Updated: May 18, 2026

Crystallization of Membrane Proteins in Lipidic Mesophases
11:53

Crystallization of Membrane Proteins in Lipidic Mesophases

Published on: March 28, 2011

Vapor diffusion-controlled meso crystallization of membrane proteins.

J Labahn1, J Kubicek, F Schäfer

  • 1Institute for Structural Biology and Biophysics, Research Center Jülich, Jülich, Germany. j.labahn@fz-juelich.de

Methods in Molecular Biology (Clifton, N.J.)
|September 15, 2012
PubMed
Summary

This study introduces a novel membrane protein crystallization method, merging meso-phase and vapor diffusion techniques for rapid screening using automated systems.

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Crystallizing Membrane Proteins for Structure Determination using Lipidic Mesophases
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Use of a Robot for High-throughput Crystallization of Membrane Proteins in Lipidic Mesophases
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Use of a Robot for High-throughput Crystallization of Membrane Proteins in Lipidic Mesophases

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Related Experiment Videos

Last Updated: May 18, 2026

Crystallization of Membrane Proteins in Lipidic Mesophases
11:53

Crystallization of Membrane Proteins in Lipidic Mesophases

Published on: March 28, 2011

Crystallizing Membrane Proteins for Structure Determination using Lipidic Mesophases
22:00

Crystallizing Membrane Proteins for Structure Determination using Lipidic Mesophases

Published on: November 21, 2010

Use of a Robot for High-throughput Crystallization of Membrane Proteins in Lipidic Mesophases
20:21

Use of a Robot for High-throughput Crystallization of Membrane Proteins in Lipidic Mesophases

Published on: September 1, 2012

Area of Science:

  • Structural Biology
  • Biochemistry
  • Membrane Protein Research

Background:

  • Membrane proteins are crucial for cellular functions but challenging to crystallize.
  • Traditional crystallization methods are often time-consuming and labor-intensive.

Purpose of the Study:

  • To develop an efficient and rapid method for membrane protein crystallization.
  • To enable high-throughput screening of crystallization conditions.

Main Methods:

  • A hybrid approach combining meso-phase and vapor diffusion crystallization techniques.
  • Utilizing automated liquid handlers for a 96-well format.

Main Results:

  • The method facilitates rapid screening of diverse crystallization conditions.
  • Successful crystallization of membrane proteins is achieved more efficiently.

Conclusions:

  • The combined method offers a significant advancement in membrane protein structural studies.
  • This approach accelerates the discovery of novel membrane protein structures.