Parathyroid hormone 2 receptor is a protein that in humans is encoded by the PTH2Rgene.[5]
Function
The protein encoded by this gene is a member of the G protein-coupled receptor family 2. This protein is a receptor for parathyroid hormone (PTH). This receptor is more selective in ligand recognition and has a more specific tissue distribution compared to parathyroid hormone 1 receptor (PTH1R). It is activated by PTH but not by parathyroid hormone-like hormone (PTHLH) and is particularly abundant in the brain and pancreas.[5]
The molecular interaction of the PTH2 receptor with the peptideTIP39 has been characterized in full 3D molecular detail, identifying among other residues Tyr-318 in transmembrane helix 5 as a key residue for high affinity binding.[6]
^Weaver RE, Mobarec JC, Wigglesworth MJ, Reynolds CA, Donnelly D (2017). "High affinity binding of the peptide agonist TIP-39 to the Parathyroid hormone 2 (PTH2) receptor requires the hydroxyl group of Tyr-318 on transmembrane helix 5". Biochemical Pharmacology. 127: 71–81. doi:10.1016/j.bcp.2016.12.013.
Further reading
Usdin TB, Gruber C, Bonner TI (1995). "Identification and functional expression of a receptor selectively recognizing parathyroid hormone, the PTH2 receptor". J. Biol. Chem. 270 (26): 15455–8. doi:10.1074/jbc.270.26.15455. PMID7797535.{{cite journal}}: CS1 maint: unflagged free DOI (link)
Usdin TB, Modi W, Bonner TI (1997). "Assignment of the human PTH2 receptor gene (PTHR2) to chromosome 2q33 by fluorescence in situ hybridization". Genomics. 37 (1): 140–1. doi:10.1006/geno.1996.0532. PMID8921382.
Clark JA, Bonner TI, Kim AS, Usdin TB (1998). "Multiple regions of ligand discrimination revealed by analysis of chimeric parathyroid hormone 2 (PTH2) and PTH/PTH-related peptide (PTHrP) receptors". Mol. Endocrinol. 12 (2): 193–206. doi:10.1210/me.12.2.193. PMID9482662.
Hoare SR, Clark JA, Usdin TB (2000). "Molecular determinants of tuberoinfundibular peptide of 39 residues (TIP39) selectivity for the parathyroid hormone-2 (PTH2) receptor. N-terminal truncation of TIP39 reverses PTH2 receptor/PTH1 receptor binding selectivity". J. Biol. Chem. 275 (35): 27274–83. doi:10.1074/jbc.M003910200. PMID10854439.{{cite journal}}: CS1 maint: unflagged free DOI (link)
John MR, Arai M, Rubin DA, et al. (2002). "Identification and characterization of the murine and human gene encoding the tuberoinfundibular peptide of 39 residues". Endocrinology. 143 (3): 1047–57. doi:10.1210/en.143.3.1047. PMID11861531.
Seeliger S, Hausberg M, Eue I, et al. (2003). "The parathyroid hormone-2 receptor is expressed on human leukocytes and down-regulated in hyperparathyroidism". Clin. Nephrol. 59 (6): 429–35. doi:10.5414/CNP59429. PMID12834174.
Bisello A, Manen D, Pierroz DD, et al. (2004). "Agonist-specific regulation of parathyroid hormone (PTH) receptor type 2 activity: structural and functional analysis of PTH- and tuberoinfundibular peptide (TIP) 39-stimulated desensitization and internalization". Mol. Endocrinol. 18 (6): 1486–98. doi:10.1210/me.2003-0487. PMID14988434.
Mahon MJ, Shimada M (2005). "Calmodulin interacts with the cytoplasmic tails of the parathyroid hormone 1 receptor and a sub-set of class b G-protein coupled receptors". FEBS Lett. 579 (3): 803–7. doi:10.1016/j.febslet.2004.12.056. PMID15670850.
Weaver RE, Mobarec JC, Wigglesworth MJ, Reynolds CA, Donnelly D (2017). "High affinity binding of the peptide agonist TIP-39 to the Parathyroid hormone 2 (PTH2) receptor requires the hydroxyl group of Tyr-318 on transmembrane helix 5". Biochemical Pharmacology. 127: 71–81. doi:10.1016/j.bcp.2016.12.013.