2qcc

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[[Image:2qcc.jpg|left|200px]]
 
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==Crystal structure of the orotidine-5'-monophosphate decarboxylase domain of human UMP synthase, apo form==
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The line below this paragraph, containing "STRUCTURE_2qcc", creates the "Structure Box" on the page.
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<StructureSection load='2qcc' size='340' side='right'caption='[[2qcc]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[2qcc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2QCC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2QCC FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 1.85&#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=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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{{STRUCTURE_2qcc| PDB=2qcc | SCENE= }}
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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=2qcc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2qcc OCA], [https://pdbe.org/2qcc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2qcc RCSB], [https://www.ebi.ac.uk/pdbsum/2qcc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2qcc ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/UMPS_HUMAN UMPS_HUMAN] Defects in UMPS are the cause of orotic aciduria type 1 (ORAC1) [MIM:[https://omim.org/entry/258900 258900]. A disorder of pyrimidine metabolism resulting in megaloblastic anemia and orotic acid crystalluria that is frequently associated with some degree of physical and mental retardation. A minority of cases have additional features, particularly congenital malformations and immune deficiencies.<ref>PMID:9042911</ref>
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== Function ==
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[https://www.uniprot.org/uniprot/UMPS_HUMAN UMPS_HUMAN]
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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/qc/2qcc_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=2qcc ConSurf].
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<div style="clear:both"></div>
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'''Crystal structure of the orotidine-5'-monophosphate decarboxylase domain of human UMP synthase, apo form'''
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==See Also==
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*[[Uridine 5'-monophosphate synthase 3D structures|Uridine 5'-monophosphate synthase 3D structures]]
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== References ==
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==Overview==
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<references/>
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UMP synthase (UMPS) catalyzes the last two steps of de novo pyrimidine nucleotide synthesis and is a potential cancer drug target. The C-terminal domain of UMPS is orotidine-5'-monophosphate decarboxylase (OMPD), a cofactor-less yet extremely efficient enzyme. Studies of OMPDs from micro-organisms led to the proposal of several noncovalent decarboxylation mechanisms via high-energy intermediates. We describe nine crystal structures of human OMPD in complex with substrate, product, and nucleotide inhibitors. Unexpectedly, simple compounds can replace the natural nucleotides and induce a closed conformation of OMPD, defining a tripartite catalytic site. The structures outline the requirements drugs must meet to maximize therapeutic effects and minimize cross-species activity. Chemical mimicry by iodide identified a CO(2) product binding site. Plasticity of catalytic residues and a covalent OMPD-UMP complex prompt a reevaluation of the prevailing decarboxylation mechanism in favor of covalent intermediates. This mechanism can also explain the observed catalytic promiscuity of OMPD.
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__TOC__
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</StructureSection>
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==Disease==
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Known disease associated with this structure: Oroticaciduria OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=258900 258900]]
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==About this Structure==
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2QCC is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2QCC OCA].
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==Reference==
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Structures of the human orotidine-5'-monophosphate decarboxylase support a covalent mechanism and provide a framework for drug design., Wittmann JG, Heinrich D, Gasow K, Frey A, Diederichsen U, Rudolph MG, Structure. 2008 Jan;16(1):82-92. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18184586 18184586]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Orotidine-5'-phosphate decarboxylase]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Rudolph M]]
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[[Category: Rudolph, M.]]
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[[Category: Wittmann J]]
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[[Category: Wittmann, J.]]
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[[Category: Catalytic proficiency]]
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[[Category: Decarboxylase]]
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[[Category: Lyase]]
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[[Category: Tim barrel]]
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[[Category: Ump synthase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 14:43:09 2008''
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Current revision

Crystal structure of the orotidine-5'-monophosphate decarboxylase domain of human UMP synthase, apo form

PDB ID 2qcc

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