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Related Concept Videos

Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

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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...
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Purification of the Sarco-Endoplasmic Reticulum Ca2+-ATPase from Rabbit Muscle
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Expression and purification of membrane proteins.

Jan Kubicek1, Helena Block1, Barbara Maertens1

  • 1QIAGEN GmbH, Research and Development, Hilden, Germany.

Methods in Enzymology
|March 29, 2014
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Summary

Standardized protocols for membrane protein isolation are crucial for drug discovery and understanding diseases. These methods enable researchers to obtain sufficient quantities of membrane proteins for characterization and therapeutic development.

Keywords:
Cell-free expression systemsE. coliEukaryotic cellsMembrane proteinsNi-NTA SuperflowOptimal solubilizationProkaryotic cells

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Area of Science:

  • Biochemistry and Molecular Biology
  • Cell Biology
  • Drug Discovery

Background:

  • Membrane proteins constitute approximately 30% of the human genome and play vital roles in cellular signaling and function.
  • Dysfunction of membrane proteins is implicated in serious diseases, including neurodegenerative disorders and diabetes.
  • These proteins are critical drug targets, representing about 50% of known and novel therapeutic targets.

Purpose of the Study:

  • To address the challenges in expressing and isolating membrane proteins.
  • To provide a set of standard protocols for membrane protein isolation.
  • To facilitate the characterization of membrane proteins for further optimization.

Main Methods:

  • Development of tailored expression and isolation procedures for membrane proteins.
  • Establishment of standard protocols for obtaining sufficient quantities of target proteins.
  • Guidance on varying conditions for yield optimization.

Main Results:

  • A workable starting point for membrane protein isolation protocols has been established.
  • The protocols aim to yield sufficient quantities for individual protein characterization.
  • The study provides a foundation for optimizing membrane protein isolation yields.

Conclusions:

  • Standardized isolation protocols are essential for advancing research on membrane proteins.
  • These protocols will aid in the characterization and therapeutic targeting of membrane proteins.
  • Further optimization of conditions can enhance protein yields for research and drug development.