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| | ==Solution Structure of the RGS domain from human RGS18== | | ==Solution Structure of the RGS domain from human RGS18== |
| - | <StructureSection load='2jm5' size='340' side='right'caption='[[2jm5]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | + | <StructureSection load='2jm5' size='340' side='right'caption='[[2jm5]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2jm5]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JM5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JM5 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2jm5]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JM5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JM5 FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2owi|2owi]]</div></td></tr> | + | </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=2jm5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jm5 OCA], [https://pdbe.org/2jm5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jm5 RCSB], [https://www.ebi.ac.uk/pdbsum/2jm5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jm5 ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RGS18, RGS13 ([https://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=2jm5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jm5 OCA], [https://pdbe.org/2jm5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jm5 RCSB], [https://www.ebi.ac.uk/pdbsum/2jm5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jm5 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/RGS18_HUMAN RGS18_HUMAN]] Inhibits signal transduction by increasing the GTPase activity of G protein alpha subunits thereby driving them into their inactive GDP-bound form. Binds to G(i) alpha-1, G(i) alpha-2, G(i) alpha-3 and G(q) alpha.<ref>PMID:11042171</ref> <ref>PMID:11955952</ref>
| + | [https://www.uniprot.org/uniprot/RGS18_HUMAN RGS18_HUMAN] Inhibits signal transduction by increasing the GTPase activity of G protein alpha subunits thereby driving them into their inactive GDP-bound form. Binds to G(i) alpha-1, G(i) alpha-2, G(i) alpha-3 and G(q) alpha.<ref>PMID:11042171</ref> <ref>PMID:11955952</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Arrowsmith, C]] | + | [[Category: Arrowsmith C]] |
| - | [[Category: Ball, L J]] | + | [[Category: Ball LJ]] |
| - | [[Category: Bray, J]] | + | [[Category: Bray J]] |
| - | [[Category: Brockmann, C]] | + | [[Category: Brockmann C]] |
| - | [[Category: Diehl, A]] | + | [[Category: Diehl A]] |
| - | [[Category: Doyle, D A]] | + | [[Category: Doyle DA]] |
| - | [[Category: Edwards, A]] | + | [[Category: Edwards A]] |
| - | [[Category: Elkins, J]] | + | [[Category: Elkins J]] |
| - | [[Category: Gileadi, C]] | + | [[Category: Gileadi C]] |
| - | [[Category: Higman, V A]] | + | [[Category: Higman VA]] |
| - | [[Category: Leidert, M]] | + | [[Category: Leidert M]] |
| - | [[Category: Oschkinat, H]] | + | [[Category: Oschkinat H]] |
| - | [[Category: Phillips, C]] | + | [[Category: Phillips C]] |
| - | [[Category: Structural genomic]]
| + | [[Category: Schmieder P]] |
| - | [[Category: Schmieder, P]] | + | [[Category: Schoch G]] |
| - | [[Category: Schoch, G]] | + | [[Category: Soundararajan M]] |
| - | [[Category: Soundararajan, M]] | + | [[Category: Sundstrom M]] |
| - | [[Category: Sundstrom, M]] | + | [[Category: Weigelt J]] |
| - | [[Category: Weigelt, J]] | + | [[Category: Yang X]] |
| - | [[Category: Yang, X]] | + | |
| - | [[Category: Sgc]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| Structural highlights
Function
RGS18_HUMAN Inhibits signal transduction by increasing the GTPase activity of G protein alpha subunits thereby driving them into their inactive GDP-bound form. Binds to G(i) alpha-1, G(i) alpha-2, G(i) alpha-3 and G(q) alpha.[1] [2]
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
Regulator of G protein signaling (RGS) proteins accelerate GTP hydrolysis by Galpha subunits and thus facilitate termination of signaling initiated by G protein-coupled receptors (GPCRs). RGS proteins hold great promise as disease intervention points, given their signature role as negative regulators of GPCRs-receptors to which the largest fraction of approved medications are currently directed. RGS proteins share a hallmark RGS domain that interacts most avidly with Galpha when in its transition state for GTP hydrolysis; by binding and stabilizing switch regions I and II of Galpha, RGS domain binding consequently accelerates Galpha-mediated GTP hydrolysis. The human genome encodes more than three dozen RGS domain-containing proteins with varied Galpha substrate specificities. To facilitate their exploitation as drug-discovery targets, we have taken a systematic structural biology approach toward cataloging the structural diversity present among RGS domains and identifying molecular determinants of their differential Galpha selectivities. Here, we determined 14 structures derived from NMR and x-ray crystallography of members of the R4, R7, R12, and RZ subfamilies of RGS proteins, including 10 uncomplexed RGS domains and 4 RGS domain/Galpha complexes. Heterogeneity observed in the structural architecture of the RGS domain, as well as in engagement of switch III and the all-helical domain of the Galpha substrate, suggests that unique structural determinants specific to particular RGS protein/Galpha pairings exist and could be used to achieve selective inhibition by small molecules.
Structural diversity in the RGS domain and its interaction with heterotrimeric G protein alpha-subunits.,Soundararajan M, Willard FS, Kimple AJ, Turnbull AP, Ball LJ, Schoch GA, Gileadi C, Fedorov OY, Dowler EF, Higman VA, Hutsell SQ, Sundstrom M, Doyle DA, Siderovski DP Proc Natl Acad Sci U S A. 2008 Apr 29;105(17):6457-62. Epub 2008 Apr 23. PMID:18434541[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Park IK, Klug CA, Li K, Jerabek L, Li L, Nanamori M, Neubig RR, Hood L, Weissman IL, Clarke MF. Molecular cloning and characterization of a novel regulator of G-protein signaling from mouse hematopoietic stem cells. J Biol Chem. 2001 Jan 12;276(2):915-23. PMID:11042171 doi:http://dx.doi.org/10.1074/jbc.M005947200
- ↑ Gagnon AW, Murray DL, Leadley RJ. Cloning and characterization of a novel regulator of G protein signalling in human platelets. Cell Signal. 2002 Jul;14(7):595-606. PMID:11955952
- ↑ Soundararajan M, Willard FS, Kimple AJ, Turnbull AP, Ball LJ, Schoch GA, Gileadi C, Fedorov OY, Dowler EF, Higman VA, Hutsell SQ, Sundstrom M, Doyle DA, Siderovski DP. Structural diversity in the RGS domain and its interaction with heterotrimeric G protein alpha-subunits. Proc Natl Acad Sci U S A. 2008 Apr 29;105(17):6457-62. Epub 2008 Apr 23. PMID:18434541
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