Dictionary > Anchoring junction

Anchoring junction

Definition
noun, plural: tight junctions
A type of cell junction that is attached to components of the extracellular matrix and anchored to one another, and plays an important role in keeping the cells together and in the structural cohesion of tissues
Supplement
Cell junctions are specialised junctions between cells. They occur within animal tissues (e.g. animal tissues, nerve tissues, etc.). They are formed by multiprotein complexes that provide contact between adjacent cells or between a cell and the extracellular matrix. There are three major types of cell junctions: (1) tight junctions, (2) gap junctions, and (3) anchoring junctions.
Anchoring junctions are cell junctions that are anchored to one another and attached to components of the extracellular matrix. They are important in keeping the cells together and structural cohesion of tissues. They are commonly found in tissues that are prone to constant mechanical stress, e.g. skin and heart.
There are three types of anchoring junctions. They are desmosomes, hemidesmosomes, and adherens junctions. Both desmosomes and hemidesmosomes use intermediate filaments as their cytoskeletal anchor. However, the transmembrane linker of desmosomes is cadherin whereas that of hemidesmosomes is integrins. Desmosomes link cell to another cell. Hemidesmosomes link cell to the extracellular matrix.
The adherens junctions use actin filaments as their cytoskeletal anchor. Their transmembrane linker is cadherin or integrin. Therefore, adherens junctions link cell to another cell or to the extracellular matrix.
See also:


You will also like...

Carbohydrates, fats and proteins - dietary sources
A Balanced Diet – Carbohydrates and Fat

Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

Lentic community
Freshwater Communities & Lentic Waters

Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

Lake Wakatipu, New Zealand
New Zealand’s Unique Geographical History

Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..

Biological Energy
ATP & ADP – Biological Energy

ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..

The process of photosynthesis
Photosynthesis – Photolysis and Carbon Fixation

Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..

Growth and Plant Hormones
Growth and Plant Hormones

Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

Related Articles...

No related articles found

See all Related Topics