zonula adherens


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Related to zonula adherens: macula adherens

zo·nu·la ad·he·'rens

a beltlike attachment, similar to a desmosome, between columnar epithelial cells; supported by cytoplasmic filaments.

zonula adherens

Etymology: L, zone, belt, adhaerere, to stick
a continuous zone running around the outer surface of a cell in which there is an intercellular space of about 15 to 20 nm width. A component of the junctional complex between cells, the zone contains dense filamentous material.

Adherens Junction

A protein complex located at the junction between epithelial cells, which are subjected to stretching and pulling, yet require tight contact between them so they can function as a single unit. Adherens junctions are linked to the cell’s actin cytoskeleton, and take two forms: as bands encircling the cell—zonula adherens—or as “spot welds” to the extracellular matrix—adhesion plaques. Adherens junctions are composed of 4 principle proteins: cadherins and alpha-catenin, plakoglobulin (aka beta or gamma catenin) and p120 (aka delta catenin).

zo·nu·la ad·he·rens

(zōnyū-lă ad-hērenz)
Beltlike attachment, similar to a desmosome, between columnar epithelial cells; supported by cytoplasmic filaments. Also called intermediate junction.

zonula

pl. zonulae [L.] zonule.

zonula adherens
common component of junctional complexes between epithelial cells; forms an effective barrier between the lumen and connective tissue. Called also tight junction.
zonula ciliaris
suspensory ligament of the lens.
zonula occludens
part of the junctional complex of columnar epithelium.
References in periodicals archive ?
Zonula adherens formation in Caenorhabditis elegans requires dlg-1, the homologue of the Drosophila gene discs large.
They are now attached to each other through junctional complexes consisting of an apical zonula adherens and a subapical septate desmosome, and to the basal lamina through hemidesmo-some-like structures.
These expansions are linked together and to the adjacent epithelial cells by zonula adherens [ILLUSTRATION FOR FIGURE 3A OMITTED].