Broadus, Arthur E. Department of Medicine, Yale University, New Haven, Connecticut.
- Chemistry and biosynthesis
- Regulation of secretion
- Target tissues and actions
- Links to Primary Literature
- Additional Readings
The secretory product of the parathyroid glands. Parathyroid hormone (PTH) is a single-chain polypeptide composed of 84 amino acids. The peptide has no intrachain disulfide linkages and a molecular weight of 9500. The sequences of human, bovine, and porcine parathyroid hormone are known, and the gene for human parathyroid hormone has been cloned and sequenced (see illustration).
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