Search results
Results From The WOW.Com Content Network
Tight junction proteins (TJ proteins) are molecules situated at the tight junctions of epithelial, endothelial and myelinated cells. This multiprotein junctional complex has a regulatory function in passage of ions, water and solutes through the paracellular pathway.
TEM of rat kidney tissue shows a protein dense tight junction (three dark lines) at ~55,000x magnification.. Tight junctions provide endothelial and epithelial cells with barrier function, which can be further subdivided into protective barriers and functional barriers serving purposes such as material transport and maintenance of osmotic balance.
The protein encoded by CLDN14 is an integral membrane protein and a component of tight junctions, one mode of cell-to-cell adhesion in epithelial or endothelial cell sheets. Tight junctions form continuous seals around cells and serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space.
JAM-1 was the first of the junctional adhesion molecules to be discovered, and is located in the tight junctions of both epithelial and endothelial cells. [8] JAM-1interacts with cells in a homophilic manner in order to preserve the structure of the junction while moderating its permeability.
Tight junction protein ZO-1 also known as Zonula Occludens-1 (ZO-1), is a 220-kD peripheral membrane protein that is encoded by the TJP1 gene in humans. [5] It belongs to the family of zonula occludens proteins (ZO-1, ZO-2, and ZO-3), which are tight junction-associated proteins and of which, ZO-1 is the first to be cloned.
Diagram of Tight junction. Occludin is a transmembrane protein that regulates the permeability of epithelial and endothelial barriers. It was first identified in epithelial cells as a 65 kDa integral plasma-membrane protein localized at the tight junctions. [5]
Claudins are a family of proteins which, along with occludin, are the most important components of the tight junctions (zonulae occludentes). [1] [2] Tight junctions establish the paracellular barrier that controls the flow of molecules in the intercellular space between the cells of an epithelium.
Tight junction protein ZO-2 is a protein that in humans is encoded by the TJP2 gene. [5]Tight junction proteins (TJPs) belong to a family of membrane-associated guanylate kinase (MAGUK) homologs that are involved in the organization of epithelial and endothelial intercellular junctions.