claudin


claudin

(klaw'din), A membrane protein, juxtaposed strands of which form tight junctions between epithelial cells.
See also: tight junction, zonula occludens. [L. claudo, to close up, + -in]

claudin

Any of more than 20 small (less than 22 kD) transmembrane proteins which are part of the proteins in the tight junctions in endothelial and epithelial cells, and are critical for forming the paracellular space through which molecules flow between epithelial cells.