3qfa: Difference between revisions
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==Crystal structure of the human thioredoxin reductase-thioredoxin complex== | ==Crystal structure of the human thioredoxin reductase-thioredoxin complex== | ||
<StructureSection load='3qfa' size='340' side='right' caption='[[3qfa]], [[Resolution|resolution]] 2.20Å' scene=''> | <StructureSection load='3qfa' size='340' side='right'caption='[[3qfa]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3qfa]] is a 4 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3qfa]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QFA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3QFA FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> | |||
<tr id=' | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3qfa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qfa OCA], [https://pdbe.org/3qfa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3qfa RCSB], [https://www.ebi.ac.uk/pdbsum/3qfa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3qfa ProSAT]</span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/TRXR1_HUMAN TRXR1_HUMAN] Isoform 1 may possess glutaredoxin activity as well as thioredoxin reductase activity and induces actin and tubulin polymerization, leading to formation of cell membrane protrusions. Isoform 4 enhances the transcriptional activity of estrogen receptors alpha and beta while isoform 5 enhances the transcriptional activity of the beta receptor only. Isoform 5 also mediates cell death induced by a combination of interferon-beta and retinoic acid.<ref>PMID:9774665</ref> <ref>PMID:8577704</ref> <ref>PMID:15199063</ref> <ref>PMID:18042542</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
| Line 19: | Line 18: | ||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 3qfa" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
*[[Thioredoxin Reductase|Thioredoxin Reductase]] | *[[Thioredoxin Reductase|Thioredoxin Reductase]] | ||
*[[Thioredoxin reductase 3D structures|Thioredoxin reductase 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
| Line 27: | Line 28: | ||
</StructureSection> | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Becker | [[Category: Becker K]] | ||
[[Category: Fritz-Wolf | [[Category: Fritz-Wolf K]] | ||
[[Category: Kehr | [[Category: Kehr S]] | ||
[[Category: Rahlfs | [[Category: Rahlfs S]] | ||
[[Category: Stumpf | [[Category: Stumpf M]] | ||
Latest revision as of 20:12, 1 November 2023
Crystal structure of the human thioredoxin reductase-thioredoxin complexCrystal structure of the human thioredoxin reductase-thioredoxin complex
Structural highlights
FunctionTRXR1_HUMAN Isoform 1 may possess glutaredoxin activity as well as thioredoxin reductase activity and induces actin and tubulin polymerization, leading to formation of cell membrane protrusions. Isoform 4 enhances the transcriptional activity of estrogen receptors alpha and beta while isoform 5 enhances the transcriptional activity of the beta receptor only. Isoform 5 also mediates cell death induced by a combination of interferon-beta and retinoic acid.[1] [2] [3] [4] Publication Abstract from PubMedThioredoxin reductase 1 (TrxR1) is a homodimeric flavoprotein crucially involved in the regulation of cellular redox homeostasis, growth, and differentiation. Its importance in various diseases makes TrxR1 a highly interesting drug target. Here we present the first crystal structures of human TrxR1 in complex with its substrate thioredoxin (Trx). The carboxy-terminal redox centre is found about 20 A apart from the amino-terminal redox centre, with no major conformational changes in TrxR or Trx. Thus, our structure confirms that the enzyme uses a flexible C-terminal arm for electron transport to its substrates, which is stabilized by a guiding bar for controlled transfer. This notion is supported by mutational analyses. Furthermore, essential residues of the interface region were characterized both structurally and functionally. The structure provides templates for future drug design, and contributes to our understanding of redox regulatory processes in mammals. Crystal structure of the human thioredoxin reductase-thioredoxin complex.,Fritz-Wolf K, Kehr S, Stumpf M, Rahlfs S, Becker K Nat Commun. 2011 Jul 12;2:383. doi: 10.1038/ncomms1382. PMID:21750537[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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