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4hhe

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<StructureSection load='4hhe' size='340' side='right'caption='[[4hhe]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
<StructureSection load='4hhe' size='340' side='right'caption='[[4hhe]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4hhe]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_43587 Atcc 43587]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2qs0 2qs0]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HHE OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4HHE FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4hhe]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pyrococcus_furiosus Pyrococcus furiosus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2qs0 2qs0]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HHE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HHE FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr>
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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]] 2.797&#8491;</td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Quinolinate_synthase Quinolinate synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.72 2.5.1.72] </span></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=CL:CHLORIDE+ION'>CL</scene></td></tr>
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<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=4hhe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hhe OCA], [http://pdbe.org/4hhe PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4hhe RCSB], [http://www.ebi.ac.uk/pdbsum/4hhe PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4hhe ProSAT]</span></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=4hhe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hhe OCA], [https://pdbe.org/4hhe PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hhe RCSB], [https://www.ebi.ac.uk/pdbsum/4hhe PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hhe ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/NADA_PYRFU NADA_PYRFU]] Catalyzes the condensation of iminoaspartate with dihydroxyacetone phosphate to form quinolinate (By similarity).
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[https://www.uniprot.org/uniprot/NADA_PYRFU NADA_PYRFU] Catalyzes the condensation of iminoaspartate with dihydroxyacetone phosphate to form quinolinate (By similarity).
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Quinolinate synthase (QS) catalyzes the condensation of iminoaspartate and dihydroxyacetone phosphate to form quinolinate, the universal precursor for the de novo biosynthesis of nicotinamide adenine dinucleotide. QS has been difficult to characterize owing either to instability or lack of activity when it is overexpressed and purified. Here, the structure of QS from Pyrococcus furiosus has been determined at 2.8 A resolution. The structure is a homodimer consisting of three domains per protomer. Each domain shows the same topology with a four-stranded parallel beta-sheet flanked by four alpha-helices, suggesting that the domains are the result of gene triplication. Biochemical studies of QS indicate that the enzyme requires a [4Fe-4S] cluster, which is lacking in this crystal structure, for full activity. The organization of domains in the protomer is distinctly different from that of a monomeric structure of QS from P. horikoshii [Sakuraba et al. (2005), J. Biol. Chem. 280, 26645-26648]. The domain arrangement in P. furiosus QS may be related to protection of cysteine side chains, which are required to chelate the [4Fe-4S] cluster, prior to cluster assembly.
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Active-site models for complexes of quinolinate synthase with substrates and intermediates.,Soriano EV, Zhang Y, Colabroy KL, Sanders JM, Settembre EC, Dorrestein PC, Begley TP, Ealick SE Acta Crystallogr D Biol Crystallogr. 2013 Sep 1;69(Pt 9):1685-96. doi:, 10.1107/S090744491301247X. Epub 2013 Aug 15. PMID:23999292<ref>PMID:23999292</ref>
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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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<div class="pdbe-citations 4hhe" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Atcc 43587]]
 
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Quinolinate synthase]]
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[[Category: Pyrococcus furiosus]]
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[[Category: Begley, T P]]
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[[Category: Begley TP]]
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[[Category: Colabroy, K]]
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[[Category: Colabroy K]]
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[[Category: Dorrestein, P C]]
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[[Category: Dorrestein PC]]
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[[Category: Ealick, S E]]
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[[Category: Ealick SE]]
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[[Category: Sanders, J M]]
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[[Category: Sanders JM]]
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[[Category: Settembre, E C]]
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[[Category: Settembre EC]]
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[[Category: Soriano, E V]]
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[[Category: Soriano EV]]
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[[Category: Zhang, Y]]
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[[Category: Zhang Y]]
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[[Category: Biosynthetic protein]]
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[[Category: Nad biosynthesis]]
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[[Category: Nada]]
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[[Category: Pyridine nucleotide biosynthesis]]
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[[Category: Transferase]]
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Current revision

Quinolinate synthase from Pyrococcus furiosus

PDB ID 4hhe

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