View source for 6bii


==Crystal Structure of Pyrococcus yayanosii Glyoxylate Hydroxypyruvate Reductase in complex with NADP and malonate (re-refinement of 5AOW)==
<StructureSection load='6bii' size='340' side='right'caption='[[6bii]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6bii]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Pyrococcus_yayanosii_CH1 Pyrococcus yayanosii CH1]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=5aow 5aow]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6BII OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6BII FirstGlance]. <br>
</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&#8491;</td></tr>
<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=MLI:MALONATE+ION'>MLI</scene>, <scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6bii FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6bii OCA], [https://pdbe.org/6bii PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6bii RCSB], [https://www.ebi.ac.uk/pdbsum/6bii PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6bii ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/F8AEA4_PYRYC F8AEA4_PYRYC] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Glyoxylate accumulation within cells is highly toxic. In humans, it is associated with hyperoxaluria type 2 (PH2) leading to renal failure. The glyoxylate content within cells is regulated by the NADPH/NADH dependent glyoxylate/hydroxypyruvate reductases (GRHPR). These are highly conserved enzymes with a dual activity as they are able to reduce glyoxylate to glycolate and to convert hydroxypyruvate into D-glycerate. Despite the determination of high-resolution X-ray structures, the substrate recognition mode of this class of enzymes remains unclear. We determined the structure at 2.0 A resolution of a thermostable GRHPR from Archaea as a ternary complex in the presence of D-glycerate and NADPH. This shows a binding mode conserved between human and archeal enzymes. We also determined the first structure of GRHPR in presence of glyoxylate at 1.40 A resolution. This revealed the pivotal role of Leu53 and Trp138 in substrate trafficking. These residues act as gatekeepers at the entrance of a tunnel connecting the active site to protein surface. Taken together, these results allowed us to propose a general model for GRHPR mode of action.

New insights into the mechanism of substrates trafficking in Glyoxylate/Hydroxypyruvate reductases.,Lassalle L, Engilberge S, Madern D, Vauclare P, Franzetti B, Girard E Sci Rep. 2016 Feb 11;6:20629. doi: 10.1038/srep20629. PMID:26865263<ref>PMID:26865263</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6bii" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Pyrococcus yayanosii CH1]]
[[Category: Girard E]]
[[Category: Lassalle L]]
[[Category: Minor W]]
[[Category: Shabalin IG]]