Calcitonin - Biosynthesis and Regulation

Biosynthesis and Regulation

Calcitonin is formed by the proteolytic cleavage of a larger prepropeptide, which is the product of the CALC1 gene (CALCA). The CALC1 gene belongs to a superfamily of related protein hormone precursors including islet amyloid precursor protein, calcitonin gene-related peptide, and the precursor of adrenomedullin.

Secretion of calcitonin is stimulated by:

  • an increase in serum
  • gastrin and pentagastrin.

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