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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.
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Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic...
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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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SNARE-mediated Fusion of Single Proteoliposomes with Tethered Supported Bilayers in a Microfluidic Flow Cell Monitored by Polarized TIRF Microscopy
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Multiple bonds for the lipid interest.

Lars Kuerschner1, Christoph Thiele1

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|January 14, 2014
PubMed
Summary
This summary is machine-generated.

Polyene and alkyne lipids are valuable tools for studying lipid behavior. Recent advances in their synthesis and application enable detailed metabolic tracing and microscopy imaging for lipid research.

Keywords:
Alkyne lipidAnalogClick lipidClick-reactionPolyene lipidProbe

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Area of Science:

  • Biochemistry
  • Lipidomics
  • Molecular Biology

Background:

  • Lipids are crucial for cellular organization, dynamics, and metabolism.
  • Polyene and alkyne lipids possess unique functional groups (multiple bonds) that minimally perturb native lipid properties.
  • These lipid analogs offer distinct advantages for tracing and imaging.

Purpose of the Study:

  • To review recent developments in the synthesis of polyene and alkyne lipid analogs.
  • To highlight the applications of these analogs in metabolic tracing and microscopy imaging.
  • To discuss the utility of these tools in understanding lipid functions.

Main Methods:

  • Synthesis of polyene and alkyne lipid analogs.
  • Utilizing intrinsic fluorescence of polyene lipids for direct detection.
  • Employing copper-catalyzed click chemistry for alkyne lipid detection with azido-reporters.
  • Application in metabolic tracing studies.
  • Utilizing microscopy imaging techniques.

Main Results:

  • Polyene lipids offer direct, intrinsic fluorescence-based detection.
  • Alkyne lipids require click chemistry for detection, enabling versatile reporter conjugation.
  • Both lipid types facilitate detailed studies of lipid organization, dynamics, and metabolism.
  • Recent synthetic strategies have improved accessibility and utility of these analogs.

Conclusions:

  • Polyene and alkyne lipids are powerful tools for lipid research.
  • Advances in synthesis and detection methods enhance their application in metabolic tracing and imaging.
  • These lipid analogs provide novel insights into lipid organization, dynamics, and metabolism.