Related Experiment Video
Updated: Aug 10, 2026

13:22
Adhesion Frequency Assay for In Situ Kinetics Analysis of Cross-Junctional Molecular Interactions at the Cell-Cell Interface
Published on: November 2, 2011
Plasma membrane components of adherens junctions (Review)
Orest W Blaschuk1, Tracey M Rowlands
1Department of Surgery, McGill University, Royal Victoria Hospital, Montreal, Quebec, Canada. orest.blaschuk@mcgill.ca
Molecular Membrane Biology
|July 20, 2002
Summary
This review examines E-cadherin, nectin-2, and vezatin, key proteins in adherens junctions. It details their structures and how E-cadherin and nectin-2 facilitate cell adhesion.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Adherens junctions are crucial for cell-cell adhesion and tissue integrity.
- Plasma membrane proteins play vital roles in mediating these cell adhesion processes.
Purpose of the Study:
- To review the structures of three key plasma membrane components of adherens junctions: E-cadherin, nectin-2, and vezatin.
- To elucidate the molecular mechanisms underlying cell adhesion promotion by E-cadherin and nectin-2.
Main Methods:
- Literature review of existing research on adherens junction components.
- Structural analysis of E-cadherin, nectin-2, and vezatin.
- Examination of molecular pathways involved in cell adhesion.
Main Results:
- Detailed structural descriptions of E-cadherin, nectin-2, and vezatin.
- Elucidation of the distinct molecular mechanisms employed by E-cadherin and nectin-2 to mediate cell adhesion.
- Identification of vezatin's role within the adherens junction complex.
Conclusions:
- E-cadherin and nectin-2 are critical for cell adhesion through distinct structural and molecular mechanisms.
- Understanding these components is essential for comprehending tissue development and stability.
- Further research into vezatin's function can provide deeper insights into adherens junction regulation.
Related Concept Videos
Overview of Cell-Matrix Interactions
The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
Anchoring Junctions
Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
Overview of Cell-Cell Junctions
The complex three-dimensional arrangement of cells in any multicellular organism is defined and maintained by interactions of cells with each other and the extracellular matrix. Cell-cell junctions are specialized structures where the multi-protein complexes on one cell interact with the multi-protein complexes on another cell. These cell junctions are classified into three main types based on their function — occluding, anchoring, and gap junctions.
Occluding or Tight Junctions
Tight...
Occluding or Tight Junctions
Tight...
Adherens Junctions
Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types – adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
The endothelial cells...
Adherens Junctions are Dynamic
The endothelial cells...
Tight Junctions
Tight junctions are molecular seals between cells that prevent the leaking of fluids, ions, and other small solutes across cavities and compartments in multicellular organisms. They are mainly composed of claudin and occludin transmembrane proteins, and other proteins such as tricellulin and JAM (junctional adhesion molecule). All these proteins are 4-pass transmembrane proteins, except JAM, which is a single-pass transmembrane protein belonging to the immunoglobulin superfamily. The...
Overview of Cell-Cell Junctions
The complex three-dimensional arrangement of cells in any multicellular organism is defined and maintained by interactions of cells with each other and the extracellular matrix. Cell-cell junctions are specialized structures where the multi-protein complexes on one cell interact with the multi-protein complexes on another cell. These cell junctions are classified into three main types based on their function — occluding, anchoring, and gap junctions.
Occluding or Tight Junctions
Tight...
Occluding or Tight Junctions
Tight...

