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Related Concept Videos

Membrane Domains01:18

Membrane Domains

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.
Protein Domains
The membrane comprises a group of distinct proteins responsible for carrying out a cell's specific function. For example, the plasma membrane of the human sperm, or a single germ cell, contains a unique set of proteins in the anterior...
Mechanisms of Membrane Domain Formation00:59

Mechanisms of Membrane Domain Formation

Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...
Lipids as Anchors01:32

Lipids as Anchors

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...
Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Ligand Binding Sites02:40

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Ligand Binding Sites02:40

Ligand Binding Sites

Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...

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Related Experiment Video

Updated: Jun 28, 2026

Construction of Model Lipid Membranes Incorporating G-protein Coupled Receptors (GPCRs)
09:45

Construction of Model Lipid Membranes Incorporating G-protein Coupled Receptors (GPCRs)

Published on: February 5, 2022

Lipid binding domains: more than simple lipid effectors.

Robert V Stahelin1

  • 1Department of Biochemistry and Molecular Biology, Indiana University School of Medicine-South Bend, Raclin-Carmichael Hall, 1234 Notre Dame Avenue, South Bend, IN 46617, USA. rstaheli@iupui.edu

Journal of Lipid Research
|November 15, 2008
PubMed
Summary

Cellular signaling relies on lipid-binding domains that recognize specific lipids for protein localization. Integrating this knowledge advances understanding of cell membranes and offers therapeutic targets.

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Area of Science:

  • Cell Biology
  • Biochemistry
  • Molecular Biology

Background:

  • Lipid molecules in cell membranes are crucial for cellular signaling and membrane trafficking.
  • Cell membranes contain diverse lipids, enabling versatile signaling pathways.
  • Proteins utilize modular lipid-binding domains for localization and function.

Purpose of the Study:

  • To review the field of lipid-binding domains.
  • To summarize recent findings and classical concepts.
  • To illustrate future directions and technological advancements.

Main Methods:

  • Structural studies
  • Computational modeling
  • Biochemical assays
  • Biophysical techniques

Main Results:

  • Lipid-binding domains recognize specific lipids, directing protein localization.
  • Nearly 20 years of research have elucidated domain-lipid interactions.
  • Integration of domain data with full proteins and lipidomes is emerging.

Conclusions:

  • Understanding lipid-binding domains is key to cellular signaling.
  • Emerging technologies will fill knowledge gaps in this field.
  • This research area holds potential for therapeutic development.