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Related Concept Videos

What are Lipids?01:38

What are Lipids?

Overview
What are Lipids?01:31

What are Lipids?

Lipids function as structural components of cellular membranes, in addition to acting as energy reservoirs and signaling molecules. They are thus crucial to all living organisms.  The three biologically important classes of lipids are triglycerides, phospholipids, and steroids.
Non-Polar and Hydrophobic Characteristics of Lipids
Lipids are a structurally and functionally diverse group of hydrocarbons—compounds consisting of carbon and hydrogen atoms. The carbon-carbon and carbon-hydrogen bonds...
What are Lipids?01:31

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Lipids function as structural components of cellular membranes, in addition to acting as energy reservoirs and signaling molecules. They are thus crucial to all living organisms.  The three biologically important classes of lipids are triglycerides, phospholipids, and steroids.
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Membrane Domains01:18

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The membrane domains concentrate specific lipids and proteins at one place within the membrane, which helps in cell signaling, adhesion, and other critical cellular processes. These domains can differ in size, composition, function, and lifespan.
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Lipids as Anchors01:32

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In the plasma membrane, the lipids forming the bilayer can also act as an anchor to tether proteins to the membrane. The three main types of lipid anchors found in eukaryotes are – prenyl groups, fatty acyl groups, and glycosylphosphatidylinositol or GPI groups. Prenyl and fatty acyl groups act as anchors on the cytosolic surface of the membrane, whereas GPI anchors proteins on the extracellular side.
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains the...

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Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis
10:23

Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis

Published on: April 17, 2017

Lipid droplets: size matters.

Michitaka Suzuki1, Yuki Shinohara, Yuki Ohsaki

  • 1Department of Anatomy and Molecular Cell Biology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.

Journal of Electron Microscopy
|August 17, 2011
PubMed
Summary
This summary is machine-generated.

Lipid droplets (LDs) are vital organelles found across many organisms. This study highlights key differences in size, location, and composition between adipocyte and non-adipocyte LDs, revealing their distinct biological roles.

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Last Updated: May 30, 2026

Lipid Droplet Isolation for Quantitative Mass Spectrometry Analysis
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09:41

Isolation of Cellular Lipid Droplets: Two Purification Techniques Starting from Yeast Cells and Human Placentas

Published on: April 1, 2014

Area of Science:

  • Cell Biology
  • Biochemistry
  • Medical Science

Background:

  • Lipid droplets (LDs) are ubiquitous organelles involved in lipid metabolism.
  • White adipocyte LDs are often considered the standard but differ significantly from other cell types.
  • Understanding these differences is crucial for cell biology and medical research.

Purpose of the Study:

  • To elucidate the distinct characteristics of lipid droplets (LDs) in white adipocytes compared to non-adipocyte cells.
  • To provide a comprehensive overview of current knowledge regarding LD heterogeneity.
  • To differentiate the properties conferred by varying LD size, localization, and molecular composition.

Main Methods:

  • Comparative analysis of existing literature on lipid droplet morphology and composition.
  • Review of studies focusing on LDs in both adipocytes and non-adipocyte cell types.
  • Synthesis of data on the functional implications of LD heterogeneity.

Main Results:

  • Adipocyte LDs are larger, centrally located, and possess a distinct molecular composition compared to non-adipocyte LDs.
  • Non-adipocyte LDs exhibit greater variability in size, peripheral localization, and protein/lipid content.
  • These structural and compositional differences lead to specialized functions in different cellular contexts.

Conclusions:

  • Lipid droplet (LD) structure and function are highly context-dependent, varying significantly between adipocytes and other cell types.
  • The 'prototype' model of LDs based on adipocytes is insufficient to explain the full spectrum of LD biology.
  • Further research into non-adipocyte LDs is essential for a complete understanding of lipid metabolism and related diseases.