Vitamin D-dependent calcium-binding protein

Vitamin D-dependent calcium binding proteins were discovered in the cytosolic fractions of chicken intestine, and later in mammalian intestine and kidney, by workers including Robert Wasserman of Cornell University.

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They bound calcium in the micromolar range and were greatly reduced in vitamin D-deficient animals. Expression could be induced by treating these animals with vitamin D metabolites such as calcitriol.

They were found to exist in two distant sizes with a molecular weight of approximately 9 kDa and 28 kDa. They were renamed calbindin; calbindin-D9k is found in mammalian intestine and calbindin-D28k in avain intestine and in kidney.

v • d • e Carrier protein: calcium-binding proteins
Intracellular calcium-sensing proteins	Calmodulin - Calnexin - Calreticulin - Gelsolin - neuronal (Hippocalcin, Neurocalcin, Recoverin)
Other	Annexin (A1, A2, A5) - Vitamin D-dependent calcium-binding protein/Calbindin - Calexcitin - Calsequestrin - Osteocalcin - Matrix gla protein - Osteonectin - S-100 - Synaptotagmin - Troponin C