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| | <StructureSection load='3ah8' size='340' side='right'caption='[[3ah8]], [[Resolution|resolution]] 2.90Å' scene=''> | | <StructureSection load='3ah8' size='340' side='right'caption='[[3ah8]], [[Resolution|resolution]] 2.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3ah8]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bovin Bovin], [https://en.wikipedia.org/wiki/Chromobacterium_sp. Chromobacterium sp.] and [https://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3AH8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3AH8 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3ah8]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus], [https://en.wikipedia.org/wiki/Chromobacterium_sp. Chromobacterium sp.], [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus] and [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3AH8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3AH8 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</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]] 2.9Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=DAM:N-METHYL-ALPHA-BETA-DEHYDROALANINE'>DAM</scene>, <scene name='pdbligand=HF2:(2R)-2-HYDROXY-3-PHENYLPROPANOIC+ACID'>HF2</scene>, <scene name='pdbligand=HL2:(2S,3R)-2-AMINO-3-HYDROXY-4-METHYLPENTANOIC+ACID'>HL2</scene>, <scene name='pdbligand=MAA:N-METHYL-L-ALANINE'>MAA</scene>, <scene name='pdbligand=OTH:N,O-DIMETHYL-L-THREONINE'>OTH</scene>, <scene name='pdbligand=THC:N-METHYLCARBONYLTHREONINE'>THC</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=DAM:N-METHYL-ALPHA-BETA-DEHYDROALANINE'>DAM</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=HF2:(2R)-2-HYDROXY-3-PHENYLPROPANOIC+ACID'>HF2</scene>, <scene name='pdbligand=HL2:(2S,3R)-2-AMINO-3-HYDROXY-4-METHYLPENTANOIC+ACID'>HL2</scene>, <scene name='pdbligand=MAA:N-METHYL-L-ALANINE'>MAA</scene>, <scene name='pdbligand=OTH:N,O-DIMETHYL-L-THREONINE'>OTH</scene>, <scene name='pdbligand=THC:N-METHYLCARBONYLTHREONINE'>THC</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">gmhB ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice]), GNB1 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 BOVIN]), GNG2 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 BOVIN])</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=3ah8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ah8 OCA], [https://pdbe.org/3ah8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ah8 RCSB], [https://www.ebi.ac.uk/pdbsum/3ah8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ah8 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=3ah8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ah8 OCA], [https://pdbe.org/3ah8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ah8 RCSB], [https://www.ebi.ac.uk/pdbsum/3ah8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ah8 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/GNAI1_RAT GNAI1_RAT]] Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. The G(i) proteins are involved in hormonal regulation of adenylate cyclase: they inhibit the cyclase in response to beta-adrenergic stimuli. The inactive GDP-bound form prevents the association of RGS14 with centrosomes and is required for the translocation of RGS14 from the cytoplasm to the plasma membrane. May play a role in cell division.<ref>PMID:16870394</ref> [[https://www.uniprot.org/uniprot/GBG2_BOVIN GBG2_BOVIN]] Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction. [[https://www.uniprot.org/uniprot/GBB1_BOVIN GBB1_BOVIN]] Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction. | + | [https://www.uniprot.org/uniprot/GNAQ_MOUSE GNAQ_MOUSE] Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. Regulates B-cell selection and survival and is required to prevent B-cell-dependent autoimmunity. Regulates chemotaxis of BM-derived neutrophils and dendritic cells (in vitro).<ref>PMID:17938235</ref> <ref>PMID:20624888</ref> [https://www.uniprot.org/uniprot/GNAI1_RAT GNAI1_RAT] Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. The G(i) proteins are involved in hormonal regulation of adenylate cyclase: they inhibit the cyclase in response to beta-adrenergic stimuli. The inactive GDP-bound form prevents the association of RGS14 with centrosomes and is required for the translocation of RGS14 from the cytoplasm to the plasma membrane. May play a role in cell division.<ref>PMID:16870394</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: Bovin]] | + | [[Category: Bos taurus]] |
| | [[Category: Chromobacterium sp]] | | [[Category: Chromobacterium sp]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Lk3 transgenic mice]] | + | [[Category: Mus musculus]] |
| - | [[Category: Hakoshima, T]] | + | [[Category: Rattus norvegicus]] |
| - | [[Category: Itoh, H]] | + | [[Category: Hakoshima T]] |
| - | [[Category: Kitano, K]] | + | [[Category: Itoh H]] |
| - | [[Category: Mizuno, N]] | + | [[Category: Kitano K]] |
| - | [[Category: Nishimura, A]] | + | [[Category: Mizuno N]] |
| - | [[Category: Tago, K]] | + | [[Category: Nishimura A]] |
| - | [[Category: Takasaki, J]] | + | [[Category: Tago K]] |
| - | [[Category: Taniguchi, M]] | + | [[Category: Takasaki J]] |
| - | [[Category: Galpha-q]]
| + | [[Category: Taniguchi M]] |
| - | [[Category: Gbeta]]
| + | |
| - | [[Category: Ggamma]]
| + | |
| - | [[Category: Gtpase]]
| + | |
| - | [[Category: Heterotrimeric g protein]]
| + | |
| - | [[Category: Inhibitor]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| - | [[Category: Signaling protein-inhibitor complex]]
| + | |
| - | [[Category: Ym-254890]]
| + | |
| Structural highlights
3ah8 is a 4 chain structure with sequence from Bos taurus, Chromobacterium sp., Mus musculus and Rattus norvegicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 2.9Å |
| Ligands: | , , , , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
GNAQ_MOUSE Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. Regulates B-cell selection and survival and is required to prevent B-cell-dependent autoimmunity. Regulates chemotaxis of BM-derived neutrophils and dendritic cells (in vitro).[1] [2] GNAI1_RAT Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. The G(i) proteins are involved in hormonal regulation of adenylate cyclase: they inhibit the cyclase in response to beta-adrenergic stimuli. The inactive GDP-bound form prevents the association of RGS14 with centrosomes and is required for the translocation of RGS14 from the cytoplasm to the plasma membrane. May play a role in cell division.[3]
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
Heterotrimeric GTP-binding proteins (G proteins) transmit extracellular stimuli perceived by G protein-coupled receptors (GPCRs) to intracellular signaling cascades. Hundreds of GPCRs exist in humans and are the targets of a large percentage of the pharmaceutical drugs used today. Because G proteins are regulated by GPCRs, small molecules that directly modulate G proteins have the potential to become therapeutic agents. However, strategies to develop modulators have been hampered by a lack of structural knowledge of targeting sites for specific modulator binding. Here we present the mechanism of action of the cyclic depsipeptide YM-254890, which is a recently discovered G(q)-selective inhibitor. YM-254890 specifically inhibits the GDP/GTP exchange reaction of alpha subunit of G(q) protein (Galpha(q)) by inhibiting the GDP release from Galpha(q). X-ray crystal structure analysis of the Galpha(q)betagamma-YM-254890 complex shows that YM-254890 binds the hydrophobic cleft between two interdomain linkers connecting the GTPase and helical domains of the Galpha(q). The binding stabilizes an inactive GDP-bound form through direct interactions with switch I and impairs the linker flexibility. Our studies provide a novel targeting site for the development of small molecules that selectively inhibit each Galpha subunit and an insight into the molecular mechanism of G protein activation.
Structural basis for the specific inhibition of heterotrimeric Gq protein by a small molecule.,Nishimura A, Kitano K, Takasaki J, Taniguchi M, Mizuno N, Tago K, Hakoshima T, Itoh H Proc Natl Acad Sci U S A. 2010 Jul 16. PMID:20639466[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Shi G, Partida-Sanchez S, Misra RS, Tighe M, Borchers MT, Lee JJ, Simon MI, Lund FE. Identification of an alternative G{alpha}q-dependent chemokine receptor signal transduction pathway in dendritic cells and granulocytes. J Exp Med. 2007 Oct 29;204(11):2705-18. Epub 2007 Oct 15. PMID:17938235 doi:10.1084/jem.20071267
- ↑ Misra RS, Shi G, Moreno-Garcia ME, Thankappan A, Tighe M, Mousseau B, Kusser K, Becker-Herman S, Hudkins KL, Dunn R, Kehry MR, Migone TS, Marshak-Rothstein A, Simon M, Randall TD, Alpers CE, Liggitt D, Rawlings DJ, Lund FE. G alpha q-containing G proteins regulate B cell selection and survival and are required to prevent B cell-dependent autoimmunity. J Exp Med. 2010 Aug 2;207(8):1775-89. doi: 10.1084/jem.20092735. Epub 2010 Jul, 12. PMID:20624888 doi:10.1084/jem.20092735
- ↑ Shu FJ, Ramineni S, Amyot W, Hepler JR. Selective interactions between Gi alpha1 and Gi alpha3 and the GoLoco/GPR domain of RGS14 influence its dynamic subcellular localization. Cell Signal. 2007 Jan;19(1):163-76. Epub 2006 Jul 25. PMID:16870394 doi:http://dx.doi.org/10.1016/j.cellsig.2006.06.002
- ↑ Nishimura A, Kitano K, Takasaki J, Taniguchi M, Mizuno N, Tago K, Hakoshima T, Itoh H. Structural basis for the specific inhibition of heterotrimeric Gq protein by a small molecule. Proc Natl Acad Sci U S A. 2010 Jul 16. PMID:20639466
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