8u8f

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Current revision (09:59, 17 October 2024) (edit) (undo)
 
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8u8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8u8f OCA], [https://pdbe.org/8u8f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8u8f RCSB], [https://www.ebi.ac.uk/pdbsum/8u8f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8u8f ProSAT]</span></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=8u8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8u8f OCA], [https://pdbe.org/8u8f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8u8f RCSB], [https://www.ebi.ac.uk/pdbsum/8u8f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8u8f ProSAT]</span></td></tr>
</table>
</table>
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== Disease ==
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<div style="background-color:#fffaf0;">
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[https://www.uniprot.org/uniprot/GNAS2_HUMAN GNAS2_HUMAN] Pseudopseudohypoparathyroidism;Pseudohypoparathyroidism type 1A;Progressive osseous heteroplasia;Polyostotic fibrous dysplasia;Monostotic fibrous dysplasia;Pseudohypoparathyroidism type 1C;Pseudohypoparathyroidism type 1B;McCune-Albright syndrome. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. Most affected individuals have defects in methylation of the gene. In some cases microdeletions involving the STX16 appear to cause loss of methylation at exon A/B of GNAS, resulting in PHP1B. Paternal uniparental isodisomy have also been observed. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry.
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== Publication Abstract from PubMed ==
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== Function ==
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The class A orphan G protein-coupled receptor (GPCR), GPR3, has been implicated in a variety of conditions, including Alzheimer's and premature ovarian failure. GPR3 constitutively couples with Galphas, resulting in the production of cAMP in cells. While tool compounds and several putative endogenous ligands have emerged for the receptor, its endogenous ligand, if it exists, remains a mystery. As novel potential drug targets, the structures of orphan GPCRs have been of increasing interest, revealing distinct modes of activation, including autoactivation, presence of constitutively activating mutations, or via cryptic ligands. Here, we present a cryo-electron microscopy (cryo-EM) structure of the orphan GPCR, GPR3 in complex with DNGalphas and Gbeta(1)gamma(2). The structure revealed clear density for a lipid-like ligand that bound within an extended hydrophobic groove, suggesting that the observed "constitutive activity" was likely due to activation via a lipid that may be ubiquitously present. Analysis of conformational variance within the cryo-EM data set revealed twisting motions of the GPR3 transmembrane helices that appeared coordinated with changes in the lipid-like density. We propose a mechanism for the binding of a lipid to its putative orthosteric binding pocket linked to the GPR3 dynamics.
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[https://www.uniprot.org/uniprot/GNAS2_HUMAN GNAS2_HUMAN] Guanine nucleotide-binding proteins (G proteins) function as transducers in numerous signaling pathways controlled by G protein-coupled receptors (GPCRs) (PubMed:17110384). Signaling involves the activation of adenylyl cyclases, resulting in increased levels of the signaling molecule cAMP (PubMed:26206488, PubMed:8702665). GNAS functions downstream of several GPCRs, including beta-adrenergic receptors (PubMed:21488135). Stimulates the Ras signaling pathway via RAPGEF2 (PubMed:12391161).<ref>PMID:12391161</ref> <ref>PMID:17110384</ref> <ref>PMID:21488135</ref> <ref>PMID:26206488</ref> <ref>PMID:8702665</ref>
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Lipid-Dependent Activation of the Orphan G Protein-Coupled Receptor, GPR3.,Russell IC, Zhang X, Bumbak F, McNeill SM, Josephs TM, Leeming MG, Christopoulos G, Venugopal H, Flocco MM, Sexton PM, Wootten D, Belousoff MJ Biochemistry. 2024 Mar 5;63(5):625-631. doi: 10.1021/acs.biochem.3c00647. Epub , 2024 Feb 20. PMID:38376112<ref>PMID:38376112</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 8u8f" style="background-color:#fffaf0;"></div>
== References ==
== References ==
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<references/>

Current revision

GPR3 Orphan G-coupled Protein Receptor in complex with Dominant Negative Gs.

PDB ID 8u8f

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