5v72: Difference between revisions
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==Crystal structure of NADPH-dependent glyoxylate/hydroxypyruvate reductase SMc04462 (SmGhrB) from Sinorhizobium meliloti in complex with citrate== | ==Crystal structure of NADPH-dependent glyoxylate/hydroxypyruvate reductase SMc04462 (SmGhrB) from Sinorhizobium meliloti in complex with citrate== | ||
<StructureSection load='5v72' size='340' side='right' caption='[[5v72]], [[Resolution|resolution]] 2.10Å' scene=''> | <StructureSection load='5v72' size='340' side='right'caption='[[5v72]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5v72]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5V72 OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[5v72]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Sinorhizobium_meliloti_1021 Sinorhizobium meliloti 1021]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5V72 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5V72 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5v72 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5v72 OCA], [https://pdbe.org/5v72 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5v72 RCSB], [https://www.ebi.ac.uk/pdbsum/5v72 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5v72 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/Q92LZ4_RHIME Q92LZ4_RHIME] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The d-2-hydroxyacid dehydrogenase (2HADH) family illustrates a complex evolutionary history with multiple lateral gene transfers and gene duplications and losses. As a result, the exact functional annotation of individual members can be extrapolated to a very limited extent. Here, we revise the previous simplified view on the classification of the 2HADH family; specifically, we show that the previously delineated glyoxylate/hydroxypyruvate reductase (GHPR) subfamily consists of two evolutionary separated GHRA and GHRB subfamilies. We compare two representatives of these subfamilies from Sinorhizobium meliloti (SmGhrA and SmGhrB), employing a combination of biochemical, structural, and bioinformatics approaches. Our kinetic results show that both enzymes reduce several 2-ketocarboxylic acids with overlapping, but not equivalent, substrate preferences. SmGhrA and SmGhrB show highest activity with glyoxylate and hydroxypyruvate, respectively; in addition, only SmGhrB reduces 2-keto-d-gluconate, and only SmGhrA reduces pyruvate (with low efficiency). We present nine crystal structures of both enzymes in apo forms and in complexes with cofactors and substrates/substrate analogues. In particular, we determined a crystal structure of SmGhrB with 2-keto-d-gluconate, which is the biggest substrate cocrystallized with a 2HADH member. The structures reveal significant differences between SmGhrA and SmGhrB, both in the overall structure and within the substrate-binding pocket, offering insight into the molecular basis for the observed substrate preferences and subfamily differences. In addition, we provide an overview of all GHRA and GHRB structures complexed with a ligand in the active site. | |||
Structural, Biochemical, and Evolutionary Characterizations of Glyoxylate/Hydroxypyruvate Reductases Show Their Division into Two Distinct Subfamilies.,Kutner J, Shabalin IG, Matelska D, Handing KB, Gasiorowska O, Sroka P, Gorna MW, Ginalski K, Wozniak K, Minor W Biochemistry. 2018 Jan 26. doi: 10.1021/acs.biochem.7b01137. PMID:29309127<ref>PMID:29309127</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 5v72" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Sinorhizobium meliloti 1021]] | ||
[[Category: | [[Category: Almo SC]] | ||
[[Category: | [[Category: Bonanno J]] | ||
[[Category: | [[Category: Cooper DR]] | ||
[[Category: | [[Category: Gasiorowska OA]] | ||
[[Category: | [[Category: Handing KB]] | ||
[[Category: | [[Category: Matelska D]] | ||
[[Category: | [[Category: Minor W]] | ||
[[Category: | [[Category: Shabalin IG]] | ||
