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1gdd

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[[Image:1gdd.jpg|left|200px]]
 
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{{Structure
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==TERTIARY AND QUATERNARY STRUCTURAL CHANGES IN GIA1 INDUCED BY GTP HYDROLYSIS==
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|PDB= 1gdd |SIZE=350|CAPTION= <scene name='initialview01'>1gdd</scene>, resolution 2.2&Aring;
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<StructureSection load='1gdd' size='340' side='right'caption='[[1gdd]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> and <scene name='pdbligand=GDP:GUANOSINE-5'-DIPHOSPHATE'>GDP</scene>
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<table><tr><td colspan='2'>[[1gdd]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GDD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GDD FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
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|GENE=
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<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>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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}}
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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=1gdd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gdd OCA], [https://pdbe.org/1gdd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gdd RCSB], [https://www.ebi.ac.uk/pdbsum/1gdd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gdd ProSAT]</span></td></tr>
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</table>
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'''TERTIARY AND QUATERNARY STRUCTURAL CHANGES IN GIA1 INDUCED BY GTP HYDROLYSIS'''
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== Function ==
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[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>
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== Evolutionary Conservation ==
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==Overview==
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[[Image:Consurf_key_small.gif|200px|right]]
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Crystallographic analysis of 2.2 angstrom resolution shows that guanosine triphosphate (GTP) hydrolysis triggers conformational changes in the heterotrimeric G-protein alpha subunit, Gi alpha 1. The switch II and switch III segments become disordered, and linker II connecting the Ras and alpha helical domains moves, thus altering the structures of potential effector and beta gamma binding regions. Contacts between the alpha-helical and Ras domains are weakened, possibly facilitating the release of guanosine diphosphate (GDP). The amino and carboxyl termini, which contain receptor and beta gamma binding determinants, are disordered in the complex with GTP, but are organized into a compact microdomain on GDP hydrolysis. The amino terminus also forms extensive quaternary contacts with neighboring alpha subunits in the lattice, suggesting that multimers of alpha subunits or heterotrimers may play a role in signal transduction.
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Check<jmol>
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<jmolCheckbox>
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==About this Structure==
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/gd/1gdd_consurf.spt"</scriptWhenChecked>
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1GDD is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GDD OCA].
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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==Reference==
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</jmolCheckbox>
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Tertiary and quaternary structural changes in Gi alpha 1 induced by GTP hydrolysis., Mixon MB, Lee E, Coleman DE, Berghuis AM, Gilman AG, Sprang SR, Science. 1995 Nov 10;270(5238):954-60. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/7481799 7481799]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1gdd ConSurf].
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<div style="clear:both"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Single protein]]
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[[Category: Mixon MB]]
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[[Category: Mixon, M B.]]
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[[Category: Sprang SR]]
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[[Category: Sprang, S R.]]
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[[Category: GDP]]
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[[Category: SO4]]
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[[Category: gtp-ase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:21:38 2008''
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Current revision

TERTIARY AND QUATERNARY STRUCTURAL CHANGES IN GIA1 INDUCED BY GTP HYDROLYSIS

PDB ID 1gdd

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