CLDN17

This gene encodes a member of the claudin family. Claudins are integral membrane proteins and components of tight junction strands. Tight junction strands serve as a physical barrier to prevent solutes and water from passing freely through the paracellular space between epithelial or endothelial cell sheets, and also play critical roles in maintaining cell polarity and signal transductions. This gene is intronless and is clustered with CLDN8 on chromosome 21q22.11. [provided by RefSeq, Jun 2010]

Full Name

Claudin 17

Function

Channel-forming tight junction protein with selectivity for anions, including chloride and bicarbonate, and for solutes smaller than 9 Angstrom in diameter. In the kidney proximal tubule, may be involved in quantitative reabsorption of filtered anions. Does not affect water permeability.

Biological Process

Bicellular tight junction assembly Source: GO_Central
Calcium-independent cell-cell adhesion via plasma membrane cell-adhesion molecules Source: UniProtKB
Cell adhesion Source: GO_Central
Chloride transport Source: UniProtKB-KW

Cellular Location

Cell membrane; Tight junction

Topology

Cytoplasmic: 1-7
Helical: 8-28
Extracellular: 29-81
Helical: 82-102
Cytoplasmic: 103-124
Helical: 125-145
Extracellular: 146-164
Helical: 165-185
Cytoplasmic: 186-224