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1u11

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(New page: 200px<br /><applet load="1u11" size="450" color="white" frame="true" align="right" spinBox="true" caption="1u11, resolution 1.55&Aring;" /> '''PurE (N5-carboxyamin...)
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[[Image:1u11.gif|left|200px]]<br /><applet load="1u11" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1u11, resolution 1.55&Aring;" />
 
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'''PurE (N5-carboxyaminoimidazole Ribonucleotide Mutase) from the acidophile Acetobacter aceti'''<br />
 
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==Overview==
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==PurE (N5-carboxyaminoimidazole Ribonucleotide Mutase) from the acidophile Acetobacter aceti==
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The crystal structure of Acetobacter aceti PurE was determined to a, resolution of 1.55 A and is compared with the known structures of the, class I PurEs from a mesophile, Escherichia coli, and a thermophile, Thermotoga maritima. Analyses of the general factors that increase protein, stability are examined as potential explanations for the acid stability of, A. aceti PurE. Increased inter-subunit hydrogen bonding and an increased, number of arginine-containing salt bridges appear to account for the bulk, of the increased acid stability. A chain of histidines linking two active, sites is discussed in the context of the proton transfers catalyzed by the, enzyme.
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<StructureSection load='1u11' size='340' side='right'caption='[[1u11]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1u11]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Acetobacter_aceti Acetobacter aceti]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1U11 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1U11 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]] 1.55&#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=CIT:CITRIC+ACID'>CIT</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=1u11 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1u11 OCA], [https://pdbe.org/1u11 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1u11 RCSB], [https://www.ebi.ac.uk/pdbsum/1u11 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1u11 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/Q2QJL3_ACEAC Q2QJL3_ACEAC] Catalyzes the conversion of N5-carboxyaminoimidazole ribonucleotide (N5-CAIR) to 4-carboxy-5-aminoimidazole ribonucleotide (CAIR) (By similarity).[PIRNR:PIRNR001338]
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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/u1/1u11_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=1u11 ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1U11 is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Acetobacter_aceti Acetobacter aceti] with CIT as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1U11 OCA].
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*[[Phosphoribosylaminoimidazole carboxylase 3D structures|Phosphoribosylaminoimidazole carboxylase 3D structures]]
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__TOC__
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==Reference==
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</StructureSection>
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Acidophilic adaptations in the structure of Acetobacter aceti N5-carboxyaminoimidazole ribonucleotide mutase (PurE)., Settembre EC, Chittuluru JR, Mill CP, Kappock TJ, Ealick SE, Acta Crystallogr D Biol Crystallogr. 2004 Oct;60(Pt 10):1753-60. Epub 2004, Sep 23. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15388921 15388921]
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[[Category: Acetobacter aceti]]
[[Category: Acetobacter aceti]]
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[[Category: Protein complex]]
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[[Category: Large Structures]]
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[[Category: Chittuluru, J.R.]]
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[[Category: Chittuluru JR]]
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[[Category: Ealick, S.E.]]
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[[Category: Ealick SE]]
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[[Category: Kappock, T.J.]]
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[[Category: Kappock TJ]]
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[[Category: Mill, C.P.]]
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[[Category: Mill CP]]
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[[Category: Settembre, E.C.]]
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[[Category: Settembre EC]]
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[[Category: CIT]]
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[[Category: acidophile]]
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[[Category: protein stability]]
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[[Category: pure]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Sun Nov 25 03:07:35 2007''
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Current revision

PurE (N5-carboxyaminoimidazole Ribonucleotide Mutase) from the acidophile Acetobacter aceti

PDB ID 1u11

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