Dictionary > Spot desmosome

Spot desmosome

Definition
noun, plural: spot desmosomes
A type of desmosome characterized by a circular or spot-like rivet between neighboring cells
Supplement
Desmosomes are anchoring junctions between neighboring cells. A similar anchoring junction is the hemidesmosome. 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. Furthermore, desmosomes link cell to another cell whereas hemidesmosomes link cell to the extracellular matrix.
Desmosomes are typically found in simple and stratified squamous epithelium. They aid in resisting shearing forces. They are also found between myocytes where they bind these cells to one another. There are basically two types of desmosomes identified: (1) spot desmosomes and (2) belt desmosomes. Their difference lies on their appearance. The belt desmosomes are belt-like surrounding the cell completely, hence, the name. Spot desmosomes, on the contrary, are spot-like or circular in appearance. Spot desmosomes are also called macula adherens (i.e. macula means spot). Spot desmosomes together with belt desmosomes and tight junctions form the so-called junctional complex.1
Synonym:

  • macula adherens

Compare:

  • Belt desmosome
  • See also:

    Reference(s):

    1 Quick review: the 5 main intercellular junctions. Retrieved from ://www.pathologystudent.com/?p=9739.


    You will also like...

    Cell Biology
    Cell Biology

    The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

    Selective Breeding
    Selective Breeding

    Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..

    New Zealand Flora & Fauna
    Ecology & Biodiversity: New Zealand Flora & Fauna

    New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    Genetic engineering
    Genetic Engineering Advantages & Disadvantages

    This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

    Genetics and Evolution
    Genetics and Evolution

    Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..