4n86: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4n86]] is a 2 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=4N86 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4N86 FirstGlance]. <br>
<table><tr><td colspan='2'>[[4n86]] is a 2 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=4N86 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4N86 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GBJ:4-[(3R)-8,8-DIMETHYL-3,4-DIHYDRO-2H,8H-PYRANO[2,3-F]CHROMEN-3-YL]BENZENE-1,3-DIOL'>GBJ</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.001&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GBJ:4-[(3R)-8,8-DIMETHYL-3,4-DIHYDRO-2H,8H-PYRANO[2,3-F]CHROMEN-3-YL]BENZENE-1,3-DIOL'>GBJ</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=4n86 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4n86 OCA], [https://pdbe.org/4n86 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4n86 RCSB], [https://www.ebi.ac.uk/pdbsum/4n86 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4n86 ProSAT]</span></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=4n86 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4n86 OCA], [https://pdbe.org/4n86 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4n86 RCSB], [https://www.ebi.ac.uk/pdbsum/4n86 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4n86 ProSAT]</span></td></tr>
</table>
</table>
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== Function ==
== Function ==
[https://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN] Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.<ref>PMID:3714052</ref>  
[https://www.uniprot.org/uniprot/TTHY_HUMAN TTHY_HUMAN] Thyroid hormone-binding protein. Probably transports thyroxine from the bloodstream to the brain.<ref>PMID:3714052</ref>  
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== Publication Abstract from PubMed ==
Transthyretin (TTR) is a plasma protein implicated in human amyloid diseases. Several small molecules that bind to the thyroxine-binding site of TTR have been shown to stabilize the TTR tetramer and to inhibit amyloid fibril formation of TTR. Herein, we demonstrated that glabridin (Glab), a prenylated isoflavan isolated from Glycyrrhiza glabra L., inhibited aggregation of TTR in a thioflavin assay. The TTR-Glab complex structure revealed a novel binding mode including a CH-pi interaction with A108 and a hydrogen bond with K15. A structural comparison with the wild type-apo structure revealed that the CH-pi interaction with A108 was strengthened by the induced-fit conformational change upon Glab binding. Furthermore, the binding of Glab induced a rotation of the T119 side chain, and the inclusion of a water molecule, leading to stabilization of the dimer-dimer interface. These results demonstrate that Glab is a novel inhibitor of TTR fibrillization and suggest the molecular mechanism by which Glab binding stabilizes the tetramer.
Crystal structures of human transthyretin complexed with glabridin.,Yokoyama T, Kosaka Y, Mizuguchi M J Med Chem. 2014 Feb 13;57(3):1090-6. doi: 10.1021/jm401832j. Epub 2014 Jan 23. PMID:24422526<ref>PMID:24422526</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4n86" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==

Latest revision as of 08:56, 20 March 2024

Crystal structure of human transthyretin complexed with glabridin

4n86, resolution 2.00Å

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