Calbindin-D-28K (also termed vitamin D-dependent calcium-binding protein, or cholecalcin), is a highly conserved 28kDa calcium binding protein, with broad tissue distribution. It belongs, together with calmodulin, S-100, parvalbumin, troponin C and other proteins, to a family of low molecular weight calcium-binding proteins (CaBPs). These CaBPs have homologous primary structures, which contain conserved polypeptide folds of the EF-hand type for Ca2+ binding. Calbindin-D-28K is found predominantly in subpopulations of central and peripheral nervous system neurons, and in certain epithelial nervous system neurons, and in certain epithelial cells involved in Ca2+ transport such as distal tubular cells and cortical collecting tubules of the kidney, and in enteric neuroendocrine cells.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: Calbindin; calbindin 1, (28kD); calbindin 1, 28 kD; calbindin 1, 28kDa; Calbindin D28; calbindin-28K; calbindin-D (28k); CalbindinD28K; cerebellar Ca-binding protein spot 35 protein; cerebellar Ca-binding protein, spot 35 protein; D-28K; PCD-29; RTVL-H protein; Spot 35 protein; Vitamin D-dependent calcium-binding protein, avian-type
Gene Aliases: Brain-2; CAB27; CaBP28K; CALB; Calb-1; CALB1; CB; D-28K
Molecular Function: calcium-binding protein