Functions in biogenesis and organization of the apical membrane of epithelial cells of the thick ascending limb of Henle's loop (TALH), where it promotes formation of complex filamentous gel-like structure that may play a role in the water barrier permeability (Probable). May serve as a receptor for binding and endocytosis of cytokines (IL-1, IL-2) and TNF (PubMed:3498215). Facilitates neutrophil migration across renal epithelia (PubMed:20798515) In the urine, may contribute to colloid osmotic p

Apical cell membraneBasolateral cell membraneCell projection, cilium membraneSecreted

Tubulointerstitial kidney disease, autosomal dominant 1

A form of autosomal dominant tubulointerstitial kidney disease, a genetically heterogeneous disorder characterized by slowly progressive loss of kidney function, bland urinary sediment, hyperuricemia, absent or mildly increased albuminuria, lack of severe hypertension during the early stages, and normal or small kidneys on ultrasound. Renal histology shows variable abnormalities including interstitial fibrosis with tubular atrophy, microcystic dilatation of the tubules, thickening of tubular basement membranes, medullary cysts, and secondary glomerulosclerotic or glomerulocystic changes with abnormal glomerular tufting. There is significant variability, as well as incomplete penetrance.