- 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.
calciumin the micromolar range and were greatly reduced in vitamin D-deficient animals. Expression could be induced by treating these animals with vitamin Dmetabolites such as calcitriol.
They were found to exist in two distant sizes with a
molecular weightof 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.
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