osteocalcin

osteocalcin
(= bone g-carboxyglutamic acid protein: BGP)
Polypeptide of 50 residues formed from a 76-77 amino acid precursor, and found in the extracellular matrix of bone. Binds hydroxyapatite. Has limited homology of its leader sequence with that of other vitamin K-dependent proteins such as prothrombin, Factors IX and X, and Protein C.

Dictionary of molecular biology. 2004.

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