Human parathyroid hormone (hPTH) is an 84 amino acid residue peptide and one of the main regulators in maintenance of calcium homeostasis. It acts primarily on kidney and bone cells stimulating calcium resorption or calcium mobilization, respectively. The whole mechanism is still under discussion, but low-dose hPTH triggers cyclic AMP-dependent protein kinase in some populations of bone cells bearing PTH receptors, which stimulates the proliferation of osteoblasts. Human parathyroid hormone(amino acids 1-84) was overexpressed in E. coli and purified to apparent homogeneity by using conventional column chromatography techniques. Alternative Names: Parathormone protein, Human Parathyroid Hormone protein, Parathyroid hormone protein, hPTH protein, PTH protein, PTH protein, Parathyrin protein, Parathormone protein