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| | ==Structure of human parathyroid hormone in complex with the extracellular domain of its G-protein-coupled receptor (PTH1R)== | | ==Structure of human parathyroid hormone in complex with the extracellular domain of its G-protein-coupled receptor (PTH1R)== |
| - | <StructureSection load='3c4m' size='340' side='right' caption='[[3c4m]], [[Resolution|resolution]] 1.95Å' scene=''> | + | <StructureSection load='3c4m' size='340' side='right'caption='[[3c4m]], [[Resolution|resolution]] 1.95Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3c4m]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3C4M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3C4M FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3c4m]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3C4M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3C4M FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MAL:MALTOSE'>MAL</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene>, <scene name='pdbligand=PRD_900001:alpha-maltose'>PRD_900001</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">malE, PTHR1, PTHR ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3c4m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3c4m OCA], [https://pdbe.org/3c4m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3c4m RCSB], [https://www.ebi.ac.uk/pdbsum/3c4m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3c4m ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3c4m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3c4m OCA], [http://pdbe.org/3c4m PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3c4m RCSB], [http://www.ebi.ac.uk/pdbsum/3c4m PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3c4m ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Disease == | | == Disease == |
| - | [[http://www.uniprot.org/uniprot/PTHY_HUMAN PTHY_HUMAN]] Defects in PTH are a cause of familial isolated hypoparathyroidism (FIH) [MIM:[http://omim.org/entry/146200 146200]]; 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.<ref>PMID:2212001</ref> <ref>PMID:10523031</ref> <ref>PMID:18056632</ref> | + | [https://www.uniprot.org/uniprot/PTHY_HUMAN PTHY_HUMAN] Defects in PTH are a cause of familial isolated hypoparathyroidism (FIH) [MIM:[https://omim.org/entry/146200 146200]; 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.<ref>PMID:2212001</ref> <ref>PMID:10523031</ref> <ref>PMID:18056632</ref> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/MALE_ECOLI MALE_ECOLI]] Involved in the high-affinity maltose membrane transport system MalEFGK. Initial receptor for the active transport of and chemotaxis toward maltooligosaccharides. [[http://www.uniprot.org/uniprot/PTHY_HUMAN PTHY_HUMAN]] 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.<ref>PMID:21076856</ref> | + | [https://www.uniprot.org/uniprot/PTHY_HUMAN PTHY_HUMAN] 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.<ref>PMID:21076856</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/c4/3c4m_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/c4/3c4m_consurf.spt"</scriptWhenChecked> |
| - | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
| | </jmolCheckbox> | | </jmolCheckbox> |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Escherichia coli]] |
| - | [[Category: Pioszak, A A]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Xu, H E]] | + | [[Category: Large Structures]] |
| - | [[Category: Cleavage on pair of basic residue]] | + | [[Category: Pioszak AA]] |
| - | [[Category: Disease mutation]] | + | [[Category: Xu HE]] |
| - | [[Category: Dwarfism]]
| + | |
| - | [[Category: G-protein-coupled receptor]]
| + | |
| - | [[Category: Glycoprotein]]
| + | |
| - | [[Category: Membrane]]
| + | |
| - | [[Category: Membrane protein]]
| + | |
| - | [[Category: Parathyroid hormone]]
| + | |
| - | [[Category: Receptor]]
| + | |
| - | [[Category: Secreted]]
| + | |
| - | [[Category: Sugar transport]]
| + | |
| - | [[Category: Transducer]]
| + | |
| - | [[Category: Transmembrane]]
| + | |
| - | [[Category: Transport]]
| + | |
| Structural highlights
Disease
PTHY_HUMAN Defects in PTH are a cause of familial isolated hypoparathyroidism (FIH) [MIM:146200; 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.[1] [2] [3]
Function
PTHY_HUMAN 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.[4]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Parathyroid hormone (PTH) is central to calcium homeostasis and bone maintenance in vertebrates, and as such it has been used for treating osteoporosis. It acts primarily by binding to its receptor, PTH1R, a member of the class B G protein-coupled receptor (GPCR) family that also includes receptors for glucagon, calcitonin, and other therapeutically important peptide hormones. Despite considerable interest and much research, determining the structure of the receptor-hormone complex has been hindered by difficulties in purifying the receptor and obtaining diffraction-quality crystals. Here, we present a method for expression and purification of the extracellular domain (ECD) of human PTH1R engineered as a maltose-binding protein (MBP) fusion that readily crystallizes. The 1.95-A structure of PTH bound to the MBP-PTH1R-ECD fusion reveals that PTH docks as an amphipathic helix into a central hydrophobic groove formed by a three-layer alpha-beta-betaalpha fold of the PTH1R ECD, resembling a hot dog in a bun. Conservation in the ECD scaffold and the helical structure of peptide hormones emphasizes this hot dog model as a general mechanism of hormone recognition common to class B GPCRs. Our findings reveal critical insights into PTH actions and provide a rational template for drug design that targets this hormone signaling pathway.
Molecular recognition of parathyroid hormone by its G protein-coupled receptor.,Pioszak AA, Xu HE Proc Natl Acad Sci U S A. 2008 Apr 1;105(13):5034-9. Epub 2008 Mar 28. PMID:18375760[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Arnold A, Horst SA, Gardella TJ, Baba H, Levine MA, Kronenberg HM. Mutation of the signal peptide-encoding region of the preproparathyroid hormone gene in familial isolated hypoparathyroidism. J Clin Invest. 1990 Oct;86(4):1084-7. PMID:2212001 doi:http://dx.doi.org/10.1172/JCI114811
- ↑ Sunthornthepvarakul T, Churesigaew S, Ngowngarmratana S. A novel mutation of the signal peptide of the preproparathyroid hormone gene associated with autosomal recessive familial isolated hypoparathyroidism. J Clin Endocrinol Metab. 1999 Oct;84(10):3792-6. PMID:10523031
- ↑ Datta R, Waheed A, Shah GN, Sly WS. Signal sequence mutation in autosomal dominant form of hypoparathyroidism induces apoptosis that is corrected by a chemical chaperone. Proc Natl Acad Sci U S A. 2007 Dec 11;104(50):19989-94. Epub 2007 Dec 3. PMID:18056632 doi:10.1073/pnas.0708725104
- ↑ Zoidis E, Ghirlanda-Keller C, Schmid C. Stimulation of glucose transport in osteoblastic cells by parathyroid hormone and insulin-like growth factor I. Mol Cell Biochem. 2011 Feb;348(1-2):33-42. doi: 10.1007/s11010-010-0634-z. Epub, 2010 Nov 13. PMID:21076856 doi:10.1007/s11010-010-0634-z
- ↑ Pioszak AA, Xu HE. Molecular recognition of parathyroid hormone by its G protein-coupled receptor. Proc Natl Acad Sci U S A. 2008 Apr 1;105(13):5034-9. Epub 2008 Mar 28. PMID:18375760
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