Parathyroid Hormone Active Protein | PTH active protein
Recombinant Human Parathyroid Hormone (1-34)
Sterile Filtered White lyophilized (freeze-dried) powder.
Introduction: Parathyroid hormone (PTH), or parathormone, is secreted by the parathyroid glands as a polypeptide containing 84 amino acids. It acts to increase the concentration of calciumin the blood, whereas calcitonin (a hormone produced by the parafollicular cells of the thyroid gland) acts to decrease calcium concentration. PTH acts to increase the concentration of calcium in the blood by acting upon parathyroid hormone receptorin three parts of the body: In the bones- It enhances the release of calcium from the large reservoir contained in the bones. Bone resorption is the normal destruction of bone by osteoclasts, which are indirectly stimulated by PTH. Stimulation is indirect since osteoclasts do not have a receptor for PTH; rather, PTH binds to osteoblasts, the cells responsible for creating bone. Binding stimulates osteoblasts to increase their expression of RANKL, which can bind to osteoclast precursors containing RANK, a receptor for RANKL. The binding of RANKL to RANK stimulates these precursors to fuse, forming new osteoclasts which ultimately enhances the resorption of bone. In the kidney- It enhances active reabsorption of calcium from distal tubules and the thick ascending limb.In the intestine- It enhances the absorption of calcium in the intestine by increasing the production of vitamin D and upregulating the enzyme responsible for 1-alpha hydroxylationof 25-hydroxy vitamin D, converting vitamin D to its active form (1,25-dihydroxy vitamin D) which effects the actual absorption of calcium (as Ca2+ ions) by the intestine via calbindin.Recombinant Human full length PTH 1-84 has potential as an anti-osteoporotic agent, due to its properties as a bone formation stimulant, it increases bone turnover, stimulating osteoblasts and reducing both vertebral and non vertebral fractures.
NCBI and Uniprot Product Information
NCBI Description
The protein encoded by this gene is a hormone secreted by parathyroid cells. This hormone elevates blood Ca2+ level by dissolving the salts in bone and preventing their renal excretion. Defects in this gene are a cause of familial isolated hypoparathyroidism (FIH). [provided by RefSeq, Jul 2008]
Uniprot Description
PTH: PTH elevates calcium level by dissolving the salts in bone and preventing their renal excretion. Stimulates [1-14C]-2- deoxy-D-glucose (2DG) transport and glycogen synthesis in osteoblastic cells. Defects in PTH are a cause of familial isolated hypoparathyroidism (FIH); also called autosomal dominant hypoparathyroidism or autosomal dominant hypocalcemia. FIH is characterized by hypocalcemia and hyperphosphatemia due to inadequate secretion of parathyroid hormone. Symptoms are seizures, tetany and cramps. FIH exist both as autosomal dominant and recessive forms of hypoparathyroidism. Belongs to the parathyroid hormone family.
Protein type: Secreted, signal peptide; Apoptosis; Hormone; Secreted
Chromosomal Location of Human Ortholog: 11p15.3-p15.1
Cellular Component: extracellular space; extracellular region
Molecular Function: RNA polymerase II transcription factor activity, enhancer binding; type 1 parathyroid hormone receptor binding; parathyroid hormone receptor binding; peptide hormone receptor binding; hormone activity
Biological Process: response to drug; transcription from RNA polymerase II promoter; positive regulation of signal transduction; induction of apoptosis by hormones; positive regulation of glycogen biosynthetic process; negative regulation of transcription from RNA polymerase II promoter; positive regulation of bone mineralization; G-protein signaling, adenylate cyclase activating pathway; Rho protein signal transduction; cellular calcium ion homeostasis; G-protein coupled receptor protein signaling pathway; positive regulation of glucose import; response to vitamin D; response to ethanol; response to cadmium ion; cAMP metabolic process; cell-cell signaling; regulation of gene expression; response to lead ion; positive regulation of cAMP biosynthetic process; positive regulation of transcription from RNA polymerase II promoter; skeletal development; bone resorption
Disease: Hypoparathyroidism, Familial Isolated
Research Articles on PTH
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Product Notes
The PTH pth (Catalog #AAA142641) is an Active Protein produced from E Coli and is intended for research purposes only. The product is available for immediate purchase. The amino acid sequence is listed below: Ser-Val-Se r-Glu-Ile- Gln-Leu-Me t-His-Asn- Leu-Gly-Ly s-His-Leu- Asn-Ser-Me t-Glu-Arg- Val-Glu-Tr p-Leu-Arg- Lys-Lys-Le u-Gln-Asp- Val-His-As n-Phe. It is sometimes possible for the material contained within the vial of "Parathyroid Hormone, Active Protein" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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