1sg6

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{{STRUCTURE_1sg6| PDB=1sg6 | SCENE= }}
 
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===Crystal structure of Aspergillus nidulans 3-dehydroquinate synthase (AnDHQS) in complex with Zn2+ and NAD+, at 1.7D===
 
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{{ABSTRACT_PUBMED_15103156}}
 
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==Function==
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==Crystal structure of Aspergillus nidulans 3-dehydroquinate synthase (AnDHQS) in complex with Zn2+ and NAD+, at 1.7D==
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[[http://www.uniprot.org/uniprot/ARO1_EMENI ARO1_EMENI]] The AROM polypeptide catalyzes 5 consecutive enzymatic reactions in prechorismate polyaromatic amino acid biosynthesis.[HAMAP-Rule:MF_03143]
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<StructureSection load='1sg6' size='340' side='right'caption='[[1sg6]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1sg6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Aspergillus_nidulans Aspergillus nidulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SG6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1SG6 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]] 1.7&#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=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1sg6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sg6 OCA], [https://pdbe.org/1sg6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1sg6 RCSB], [https://www.ebi.ac.uk/pdbsum/1sg6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1sg6 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/ARO1_EMENI ARO1_EMENI] The AROM polypeptide catalyzes 5 consecutive enzymatic reactions in prechorismate polyaromatic amino acid biosynthesis.[HAMAP-Rule:MF_03143]
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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/sg/1sg6_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=1sg6 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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Crystallization of Aspergillus nidulans 3-dehydroquinate synthase (DHQS), following turnover of the enzyme by addition of the substrate DAHP, gave a new crystal form (form J). Although the crystals have dimensions of only 50 x 20 x 5 micro m, they are well ordered, diffracting to 1.7 A. The space group is C222(1), with unit-cell parameters a = 90.0, b = 103.7, c = 177.4 A. Structure determination and refinement to R = 0.19 (R(free) = 0.25) shows the DHQS is in the 'open' form with the substrate site unoccupied but with some loop regions perturbed. Previous crystals of open-form DHQS only diffracted to 2.5 A resolution. The use of enzyme turnover may be applicable in other systems in attempts to improve crystal quality.
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==About this Structure==
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Structure of the 'open' form of Aspergillus nidulans 3-dehydroquinate synthase at 1.7 A resolution from crystals grown following enzyme turnover.,Nichols CE, Hawkins AR, Stammers DK Acta Crystallogr D Biol Crystallogr. 2004 May;60(Pt 5):971-3. Epub 2004, Apr 21. PMID:15103156<ref>PMID:15103156</ref>
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[[1sg6]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Emericella_nidulans Emericella nidulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SG6 OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<ref group="xtra">PMID:015103156</ref><references group="xtra"/><references/>
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</div>
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[[Category: 3-dehydroquinate synthase]]
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<div class="pdbe-citations 1sg6" style="background-color:#fffaf0;"></div>
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[[Category: Emericella nidulans]]
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== References ==
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[[Category: Hawkins, A R.]]
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<references/>
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[[Category: Nichols, C E.]]
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__TOC__
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[[Category: Stammers, D K.]]
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</StructureSection>
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[[Category: Aromatic amino acid biosynthesis]]
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[[Category: Aspergillus nidulans]]
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[[Category: Cyclase]]
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[[Category: Large Structures]]
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[[Category: Dhq]]
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[[Category: Hawkins AR]]
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[[Category: Domain movement]]
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[[Category: Nichols CE]]
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[[Category: Form j]]
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[[Category: Stammers DK]]
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[[Category: Lyase]]
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[[Category: Open form]]
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[[Category: Shikimate pathway]]
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Current revision

Crystal structure of Aspergillus nidulans 3-dehydroquinate synthase (AnDHQS) in complex with Zn2+ and NAD+, at 1.7D

PDB ID 1sg6

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