S100G encodes calbindin D9K, a vitamin D-dependent calcium-binding protein. This cytosolic protein belongs to a family of calcium-binding proteins that includes calmodulin, parvalbumin, troponin C, and S100 protein. In the intestine, the protein is vitamin D-dependent and its expression correlates with calcium transport activity. The protein may increase Ca2+ absorption by buffering Ca2+ in the cytoplasm and increase ATP-dependent Ca2+ transport in duodenal basolateral membrane vesicles.
CABP; calbindin 3, (vitamin D-dependent calcium-binding protein); calbindin D9K; Calbindin-D9k; Protein S100-G; S100 calcium-binding protein G; Vitamin D-dependent calcium-binding protein, intestinal
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