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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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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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Solubility03:00

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Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
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Handwashing I: Introduction and Types of Equipment01:18

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Handwashing is hand hygiene with plain or antimicrobial soap and water to physically remove dirt, organic material, and microorganisms. However, it may not kill all microorganisms. The handwashing procedure requires a hand wash basin, liquid soap, paper towels, a domestic waste bin, and disposable nail cleaner as optional equipment.
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After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
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Related Experiment Video

Updated: May 1, 2026

Contrast-Matching Detergent in Small-Angle Neutron Scattering Experiments for Membrane Protein Structural Analysis and Ab Initio Modeling
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Explanatory chapter: choosing the right detergent.

Dirk Linke1

  • 1Department Protein Evolution, Max-Planck-Institute for Developmental Biology, Tübingen, Germany.

Methods in Enzymology
|March 29, 2014
PubMed
Summary
This summary is machine-generated.

Choosing the right detergent is crucial for membrane protein research. This protocol guides scientists in selecting appropriate detergents to maintain protein solubility for various biochemical applications.

Keywords:
Affinity chromatographyDetergentsHydrophobic interaction chromatography (HIC)Ion exchange chromatographyLinear and circular dichroismMembrane proteinsPolyacrylamide gel electrophoresisSize exclusion chromatographySolubilizationUV-VIS spectroscopy

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Protein Science

Background:

  • Membrane proteins represent a significant class of drug targets.
  • Studying membrane proteins requires specialized techniques due to their hydrophobic nature.
  • Detergents are essential for solubilizing membrane proteins for biochemical analysis.

Purpose of the Study:

  • To provide a comprehensive guide for selecting detergents for membrane protein studies.
  • To facilitate the application of standard biochemical techniques to membrane proteins.
  • To aid researchers in optimizing detergent choice for specific experimental needs.

Main Methods:

  • Review of established biochemical techniques applicable to membrane proteins.
  • Discussion of detergent properties and their impact on protein structure and function.
  • Criteria for detergent selection based on experimental goals and protein characteristics.

Main Results:

  • Membrane proteins can be studied using most biochemical techniques when properly solubilized.
  • The choice of detergent significantly influences the success of membrane protein experiments.
  • A systematic approach to detergent selection is presented.

Conclusions:

  • Effective detergent selection is paramount for successful membrane protein biochemistry.
  • This protocol serves as a valuable resource for researchers working with membrane proteins.
  • Optimizing detergent choice enhances the reliability and scope of membrane protein studies.