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Related Concept Videos

Membrane Lipids01:32

Membrane Lipids

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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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Oligosaccharide Assembly01:24

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Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
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Membrane Carbohydrates01:30

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The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
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Protein Glycosylation01:25

Protein Glycosylation

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Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
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Asymmetric Lipid Bilayer01:35

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Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
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Proteoglycans01:05

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Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
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Updated: Oct 21, 2025

Mass Spectrometric Analysis of Glycosphingolipid Antigens
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Mass Spectrometric Analysis of Glycosphingolipid Antigens

Published on: April 16, 2013

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Glycosphingolipids.

Elena Chiricozzi1, Massimo Aureli1, Laura Mauri1

  • 1Department of Medical Biotechnology and Translational Medicine, University of Milano, Segrate, Milano, Italy.

Advances in Experimental Medicine and Biology
|September 8, 2021
PubMed
Summary
This summary is machine-generated.

Glycosphingolipids are vital membrane components influencing cell biology. Their structure, metabolism, and protein interactions impact cell signaling in both health and disease.

Keywords:
CancerCeramideGlycosphingolipidsNeurodegenerationNeuroprotectionSphingosine

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Background:

  • Glycosphingolipids are essential amphiphilic molecules within the plasma membrane.
  • They consist of a glycan moiety attached to a lipid component.
  • These molecules play a crucial role in cellular functions.

Purpose of the Study:

  • To provide a comprehensive overview of glycosphingolipids.
  • To elucidate their structure and metabolic pathways.
  • To explore their role in cell signaling and overall cell biology.

Main Methods:

  • Literature review and synthesis of existing research on glycosphingolipids.
  • Analysis of glycosphingolipid structure and metabolism.
  • Examination of protein-glycosphingolipid interactions.

Main Results:

  • Detailed description of glycosphingolipid structures and metabolic processes.
  • Identification of their interactions with cellular proteins.
  • Demonstration of their modulatory effects on cell signaling.

Conclusions:

  • Glycosphingolipids are critical regulators of cell biology.
  • Their functions are intrinsically linked to their structure and interactions.
  • Dysregulation of glycosphingolipids contributes to various diseases.