connexon

(redirected from Connexons)
Also found in: Medical.

connexon

[kə′nek‚sän]
(cell and molecular biology)
Any of the cylindrical channels associated with gap junctions.
References in periodicals archive ?
Pannexin1 and Pannexin2 channels show quaternary similarities to connexons and different oligomerization numbers from each other.
In the current edition, Ganong (physiology, University of California) expands coverage of food intake, mitochondria and molecular motors, melanopsin, pheromones, von Willebrand factor, and the complexity of connexons, while sections on renal function and estrogen receptors have been updated.
In the course of forming gap junctions, the connexins oligomerize into hexameric arrays known as "connexons" or "hemichannels" that assemble in the plasma membrane before docking with the connexons of adjacent cells (1).
Small intracellular pores in endothelial cells may also open in the presence of 5-HT Cx43 is a major connexin found in endothelial cells and is found in connexons, transmembrane gap junctions that allow the diffusion of small molecules between cells.
Six connexin polypeptides oligomerize to form a membrane hemichannel, or connexon, which can dock with the connexons from adjacent cells to form an aqueous pore (d [approximately equal to] 16 A) which allows the cell-to-cell diffusion of ions, second-messenger molecules, and metabolites having a molecular mass [less than or equal to] 1 kDa.
Six connexin polypeptides oligomerize to form a membrane hemichannel or connexon, clusters of which join with the connexons of adjacent cells to create the gap junction.
If intercellular coupling sensitive to gap junction blockers is involved in sea pansy luminescence signaling, then one should be able to detect a protein capable of assembling into connexons for this coupling.