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Related Concept Videos

Introduction to Membrane Proteins01:16

Introduction to Membrane Proteins

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The cell membrane, or plasma membrane, is an ever-changing landscape. It is described as a fluid mosaic where various macromolecules are embedded in the phospholipid bilayer. Among the macromolecules are proteins. The protein content varies across cell types. For example, mitochondrial inner membranes contain ~76% protein content, while myelin contains ~18% protein content. Individual cells contain many types of membrane proteins—red blood cells contain over 50—and different cell...
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Membrane Lipids01:32

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Lipids are an essential component of all biological membranes. The average lipid content in mammalian membranes is 50%, though it can be as low as 20% in the inner mitochondrial membrane or as high as 80% in the myelin sheath present around the nerve cells.
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Tandem Mass Spectrometry01:21

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Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
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Mass Spectrometry: Overview01:19

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Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass. One common type of ionization, known as electron ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave behind a...
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In mass spectroscopy, amines undergo fragmentation to give parent ions with odd molecule weights. This observed mass spectrum follows the nitrogen rule; a molecule with an odd number of nitrogen atoms produces a molecular ion with an odd molecular weight. Amines undergo fragmentation through α cleavage, producing nitrogen-containing cations—iminium ions—and alkyl radicals. Mass spectra of aromatic and cyclic aliphatic amines exhibit strong molecular ion peaks, but acyclic...
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Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the mass differences between isotopes. Furthermore, the intensity of these signals is dependent on the...
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Related Experiment Video

Updated: Jan 27, 2026

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

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Membrane Protein-Lipid Interactions Probed Using Mass Spectrometry.

Jani Reddy Bolla1, Mark T Agasid1, Shahid Mehmood1

  • 1Department of Chemistry, University of Oxford, Oxford OX1 3QZ, United Kingdom;

Annual Review of Biochemistry
|March 23, 2019
PubMed
Summary
This summary is machine-generated.

Lipid molecules are essential for membrane protein structure and function. Native mass spectrometry (native MS) is a powerful technique for studying these vital protein-lipid interactions in their natural environment.

Keywords:
lipidsmembrane proteinsnative MSnative mass spectrometryprotein–lipid interactions

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

  • Biochemistry
  • Structural Biology
  • Biophysics

Background:

  • Membrane proteins function within lipid bilayers, not in isolation.
  • Associated lipids are critical for maintaining membrane protein structure and function.
  • Understanding protein-lipid interactions is key to membrane protein research.

Purpose of the Study:

  • To review structural techniques for probing protein-lipid interactions.
  • To focus on molecular insights gained from native mass spectrometry (native MS).
  • To highlight native MS as a complementary method to established structural techniques.

Main Methods:

  • Review of structural techniques for protein-lipid interaction analysis.
  • Application of native mass spectrometry (native MS) for molecular-level investigation.
  • Comparison of native MS with X-ray crystallography and cryo-electron microscopy.

Main Results:

  • Lipids significantly modulate membrane protein structure and function.
  • Native MS provides detailed molecular information on protein-lipid complexes.
  • Native MS complements traditional structural biology methods.

Conclusions:

  • Native MS is a valuable tool for studying membrane protein-lipid interactions.
  • Further advancements in native MS will enhance understanding of native protein environments.
  • Continued research is needed to fully elucidate the role of lipids in membrane protein biology.