2v8q

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[[Image:2v8q.png|left|200px]]
 
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{{STRUCTURE_2v8q| PDB=2v8q | SCENE= }}
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==Crystal structure of the regulatory fragment of mammalian AMPK in complexes with AMP==
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<StructureSection load='2v8q' size='340' side='right'caption='[[2v8q]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2v8q]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] 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=2V8Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2V8Q FirstGlance]. <br>
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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]] 2.1&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene></td></tr>
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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=2v8q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2v8q OCA], [https://pdbe.org/2v8q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2v8q RCSB], [https://www.ebi.ac.uk/pdbsum/2v8q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2v8q ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/AAKG1_RAT AAKG1_RAT] AMP/ATP-binding subunit of AMP-activated protein kinase (AMPK), an energy sensor protein kinase that plays a key role in regulating cellular energy metabolism. In response to reduction of intracellular ATP levels, AMPK activates energy-producing pathways and inhibits energy-consuming processes: inhibits protein, carbohydrate and lipid biosynthesis, as well as cell growth and proliferation. AMPK acts via direct phosphorylation of metabolic enzymes, and by longer-term effects via phosphorylation of transcription regulators. Also acts as a regulator of cellular polarity by remodeling the actin cytoskeleton; probably by indirectly activating myosin. Gamma non-catalytic subunit mediates binding to AMP, ADP and ATP, leading to activate or inhibit AMPK: AMP-binding results in allosteric activation of alpha catalytic subunit (PRKAA1 or PRKAA2) both by inducing phosphorylation and preventing dephosphorylation of catalytic subunits. ADP also stimulates phosphorylation, without stimulating already phosphorylated catalytic subunit. ATP promotes dephosphorylation of catalytic subunit, rendering the AMPK enzyme inactive.<ref>PMID:17851531</ref> <ref>PMID:21399626</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/v8/2v8q_consurf.spt"</scriptWhenChecked>
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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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</jmolCheckbox>
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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=2v8q ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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AMP-activated protein kinase (AMPK) regulates cellular metabolism in response to the availability of energy and is therefore a target for type II diabetes treatment. It senses changes in the ratio of AMP/ATP by binding both species in a competitive manner. Thus, increases in the concentration of AMP activate AMPK resulting in the phosphorylation and differential regulation of a series of downstream targets that control anabolic and catabolic pathways. We report here the crystal structure of the regulatory fragment of mammalian AMPK in complexes with AMP and ATP. The phosphate groups of AMP/ATP lie in a groove on the surface of the gamma domain, which is lined with basic residues, many of which are associated with disease-causing mutations. Structural and solution studies reveal that two sites on the gamma domain bind either AMP or Mg.ATP, whereas a third site contains a tightly bound AMP that does not exchange. Our binding studies indicate that under physiological conditions AMPK mainly exists in its inactive form in complex with Mg.ATP, which is much more abundant than AMP. Our modelling studies suggest how changes in the concentration of AMP ([AMP]) enhance AMPK activity levels. The structure also suggests a mechanism for propagating AMP/ATP signalling whereby a phosphorylated residue from the alpha and/or beta subunits binds to the gamma subunit in the presence of AMP but not when ATP is bound.
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===CRYSTAL STRUCTURE OF THE REGULATORY FRAGMENT OF MAMMALIAN AMPK IN COMPLEXES WITH AMP===
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Structural basis for AMP binding to mammalian AMP-activated protein kinase.,Xiao B, Heath R, Saiu P, Leiper FC, Leone P, Jing C, Walker PA, Haire L, Eccleston JF, Davis CT, Martin SR, Carling D, Gamblin SJ Nature. 2007 Sep 27;449(7161):496-500. Epub 2007 Sep 12. PMID:17851531<ref>PMID:17851531</ref>
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{{ABSTRACT_PUBMED_17851531}}
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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==About this Structure==
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<div class="pdbe-citations 2v8q" style="background-color:#fffaf0;"></div>
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[[2v8q]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2V8Q OCA].
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==See Also==
==See Also==
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*[[AMP-activated protein kinase|AMP-activated protein kinase]]
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*[[AMP-activated protein kinase 3D structures|AMP-activated protein kinase 3D structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:017851531</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Non-specific serine/threonine protein kinase]]
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[[Category: Large Structures]]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Carling, D.]]
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[[Category: Carling D]]
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[[Category: Davis, C T.]]
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[[Category: Davis CT]]
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[[Category: Eccleston, J F.]]
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[[Category: Eccleston JF]]
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[[Category: Gamblin, S J.]]
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[[Category: Gamblin SJ]]
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[[Category: Haire, L.]]
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[[Category: Haire L]]
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[[Category: Heath, R.]]
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[[Category: Heath R]]
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[[Category: Jing, C.]]
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[[Category: Jing C]]
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[[Category: Leiper, F C.]]
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[[Category: Leiper FC]]
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[[Category: Leone, P.]]
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[[Category: Leone P]]
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[[Category: Martin, S R.]]
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[[Category: Martin SR]]
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[[Category: Saiu, P.]]
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[[Category: Saiu P]]
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[[Category: Walker, P A.]]
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[[Category: Walker PA]]
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[[Category: Xiao, B.]]
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[[Category: Xiao B]]
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[[Category: Cbs domain]]
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[[Category: Kinase]]
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[[Category: Magnesium]]
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[[Category: Nucleotide-binding]]
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[[Category: Phosphorylation]]
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[[Category: Serine/threonine-protein kinase]]
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[[Category: Transferase]]
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Current revision

Crystal structure of the regulatory fragment of mammalian AMPK in complexes with AMP

PDB ID 2v8q

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