|
|
| (One intermediate revision not shown.) |
| Line 1: |
Line 1: |
| | + | |
| | ==Structure of the C13.28 RNA Aptamer Bound to the G Protein-Coupled Receptor Kinase 2-Heterotrimeric G Protein Beta 1 and Gamma 2 Subunit Complex== | | ==Structure of the C13.28 RNA Aptamer Bound to the G Protein-Coupled Receptor Kinase 2-Heterotrimeric G Protein Beta 1 and Gamma 2 Subunit Complex== |
| - | <StructureSection load='3uzs' size='340' side='right' caption='[[3uzs]], [[Resolution|resolution]] 4.52Å' scene=''> | + | <StructureSection load='3uzs' size='340' side='right'caption='[[3uzs]], [[Resolution|resolution]] 4.52Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3uzs]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3UZS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3UZS FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3uzs]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3UZS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3UZS FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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]] 4.52Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CMT:O-METHYLCYSTEINE'>CMT</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CMT:O-METHYLCYSTEINE'>CMT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3uzt|3uzt]], [[1omw|1omw]]</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=3uzs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3uzs OCA], [https://pdbe.org/3uzs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3uzs RCSB], [https://www.ebi.ac.uk/pdbsum/3uzs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3uzs ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ADRBK1, GRK2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 Bos taurus]), GNB1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 Bos taurus]), GNG2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 Bos taurus])</td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/[Beta-adrenergic-receptor]_kinase [Beta-adrenergic-receptor] kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.15 2.7.11.15] </span></td></tr>
| + | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3uzs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3uzs OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3uzs RCSB], [http://www.ebi.ac.uk/pdbsum/3uzs PDBsum]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/ARBK1_BOVIN ARBK1_BOVIN]] Specifically phosphorylates the agonist-occupied form of the beta-adrenergic and closely related receptors, probably inducing a desensitization of them. Key regulator of LPAR1 signaling. Competes with RALA for binding to LPAR1 thus affecting the signaling properties of the receptor. Desensitizes LPAR1 and LPAR2 in a phosphorylation-independent manner (By similarity). [[http://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. [[http://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/ARBK1_BOVIN ARBK1_BOVIN] Specifically phosphorylates the agonist-occupied form of the beta-adrenergic and closely related receptors, probably inducing a desensitization of them. Key regulator of LPAR1 signaling. Competes with RALA for binding to LPAR1 thus affecting the signaling properties of the receptor. Desensitizes LPAR1 and LPAR2 in a phosphorylation-independent manner (By similarity). |
| - | <div style="background-color:#fffaf0;">
| + | |
| - | == Publication Abstract from PubMed ==
| + | |
| - | Cardiovascular homeostasis is maintained in part by the rapid desensitization of activated heptahelical receptors that have been phosphorylated by G protein-coupled receptor kinase 2 (GRK2). However, during chronic heart failure GRK2 is upregulated and believed to contribute to disease progression. We have determined crystallographic structures of GRK2 bound to an RNA aptamer that potently and selectively inhibits kinase activity. Key to the mechanism of inhibition is the positioning of an adenine nucleotide into the ATP-binding pocket and interactions with the basic alphaF-alphaG loop region of the GRK2 kinase domain. Constraints imposed on the RNA by the terminal stem of the aptamer also play a role. These results highlight how a high-affinity aptamer can be used to selectively trap a novel conformational state of a protein kinase.
| + | |
| - | | + | |
| - | Molecular Mechanism for Inhibition of G Protein-Coupled Receptor Kinase 2 by a Selective RNA Aptamer.,Tesmer VM, Lennarz S, Mayer G, Tesmer JJ Structure. 2012 Jun 21. PMID:22727813<ref>PMID:22727813</ref>
| + | |
| - | | + | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
| - | </div>
| + | |
| | | | |
| | ==See Also== | | ==See Also== |
| - | *[[Guanine nucleotide-binding protein|Guanine nucleotide-binding protein]] | + | *[[Beta adrenergic receptor kinase 3D structures|Beta adrenergic receptor kinase 3D structures]] |
| - | *[[Transducin|Transducin]] | + | *[[Transducin 3D structures|Transducin 3D structures]] |
| - | == References ==
| + | |
| - | <references/>
| + | |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| | [[Category: Bos taurus]] | | [[Category: Bos taurus]] |
| - | [[Category: Tesmer, J J.G]] | + | [[Category: Large Structures]] |
| - | [[Category: Tesmer, V M]] | + | [[Category: Tesmer JJG]] |
| - | [[Category: Beta propeller]] | + | [[Category: Tesmer VM]] |
| - | [[Category: Carboxymethylation]]
| + | |
| - | [[Category: G protein-coupled receptor phosphorylation]]
| + | |
| - | [[Category: Geranylgeranylation]]
| + | |
| - | [[Category: Pleckstrin homology domain]]
| + | |
| - | [[Category: Protein kinase fold]]
| + | |
| - | [[Category: Protein-rna complex]]
| + | |
| - | [[Category: Rgs homology domain]]
| + | |
| - | [[Category: Rna aptamer]]
| + | |
| - | [[Category: Transferase-rna complex]]
| + | |
