1fqk: Difference between revisions

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-[[Image:1fqk.jpg|left|200px]]
- {{Structure
+==CRYSTAL STRUCTURE OF THE HETERODIMERIC COMPLEX OF THE RGS DOMAIN OF RGS9, AND THE GT/I1 CHIMERA ALPHA SUBUNIT [(RGS9)-(GT/I1ALPHA)-(GDP)-(ALF4-)-(MG2+)]==
-|PDB= 1fqk |SIZE=350|CAPTION= <scene name='initialview01'>1fqk</scene>, resolution 2.30&Aring;
+<StructureSection load='1fqk' size='340' side='right'caption='[[1fqk]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
-|SITE=
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ALF:TETRAFLUOROALUMINATE+ION'>ALF</scene> and <scene name='pdbligand=GDP:GUANOSINE-5'-DIPHOSPHATE'>GDP</scene>
+<table><tr><td colspan='2'>[[1fqk]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus] 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=1FQK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FQK FirstGlance]. <br>
-|ACTIVITY=
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ALF:TETRAFLUOROALUMINATE+ION'>ALF</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=1fqk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fqk OCA], [https://pdbe.org/1fqk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fqk RCSB], [https://www.ebi.ac.uk/pdbsum/1fqk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fqk ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/GNAT1_BOVIN GNAT1_BOVIN] Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. Transducin is an amplifier and one of the transducers of a visual impulse that performs the coupling between rhodopsin and cGMP-phosphodiesterase.[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 ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fq/1fqk_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</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=1fqk ConSurf].
+<div style="clear:both"></div>
-'''CRYSTAL STRUCTURE OF THE HETERODIMERIC COMPLEX OF THE RGS DOMAIN OF RGS9, AND THE GT/I1 CHIMERA ALPHA SUBUNIT [(RGS9)-(GT/I1ALPHA)-(GDP)-(ALF4-)-(MG2+)]'''
+==See Also==
+*[[Regulator of G-protein signaling 3D structures|Regulator of G-protein signaling 3D structures]]
+*[[Transducin 3D structures|Transducin 3D structures]]
-==Overview==
+== References ==
-A multitude of heptahelical receptors use heterotrimeric G proteins to transduce signals to specific effector target molecules. The G protein transducin, Gt, couples photon-activated rhodopsin with the effector cyclic GMP phosophodiesterase (PDE) in the vertebrate phototransduction cascade. The interactions of the Gt alpha-subunit (alpha(t)) with the inhibitory PDE gamma-subunit (PDEgamma) are central to effector activation, and also enhance visual recovery in cooperation with the GTPase-activating protein regulator of G-protein signalling (RGS)-9 (refs 1-3). Here we describe the crystal structure at 2.0 A of rod transducin alpha x GDP x AlF4- in complex with the effector molecule PDEgamma and the GTPase-activating protein RGS9. In addition, we present the independently solved crystal structures of the RGS9 RGS domain both alone and in complex with alpha(t/i1) x GDP x AlF4-. These structures reveal insights into effector activation, synergistic GTPase acceleration, RGS9 specificity and RGS activity. Effector binding to a nucleotide-dependent site on alpha(t) sequesters PDEgamma residues implicated in PDE inhibition, and potentiates recruitment of RGS9 for hydrolytic transition state stabilization and concomitant signal termination.
+<references/>
+__TOC__
-==About this Structure==
+</StructureSection>
-FQK is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Bos_taurus_and_rattus_norvegicus Bos taurus and rattus norvegicus] and [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FQK OCA].
-==Reference==
-Structural determinants for regulation of phosphodiesterase by a G protein at 2.0 A., Slep KC, Kercher MA, He W, Cowan CW, Wensel TG, Sigler PB, Nature. 2001 Feb 22;409(6823):1071-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11234020 11234020]
 [[Category: Bos taurus]]
-[[Category: Bos taurus and rattus norvegicus]]
+[[Category: Large Structures]]
-[[Category: Protein complex]]
+[[Category: Rattus norvegicus]]
-[[Category: Cowan, C W.]]
+[[Category: Cowan CW]]
-[[Category: He, W.]]
+[[Category: He W]]
-[[Category: Kercher, M A.]]
+[[Category: Kercher MA]]
-[[Category: Sigler, P B.]]
+[[Category: Sigler PB]]
-[[Category: Slep, K C.]]
+[[Category: Slep KC]]
-[[Category: Wensel, T G.]]
+[[Category: Wensel TG]]
-[[Category: ALF]]
-[[Category: GDP]]
-[[Category: MG]]
-[[Category: g protein]]
-[[Category: gap]]
-[[Category: phototransduction]]
-[[Category: rg]]
-[[Category: rgs9]]
-[[Category: rod]]
-[[Category: transducin]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:12:41 2008''