8u5b
From Proteopedia
(Difference between revisions)
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<table><tr><td colspan='2'>[[8u5b]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_perfringens Clostridium perfringens], [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8U5B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8U5B FirstGlance]. <br> | <table><tr><td colspan='2'>[[8u5b]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_perfringens Clostridium perfringens], [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8U5B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8U5B FirstGlance]. <br> | ||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 5.3Å</td></tr> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 5.3Å</td></tr> | ||
| - | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AV0: | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AV0:Lauryl+Maltose+Neopentyl+Glycol'>AV0</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=8u5b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8u5b OCA], [https://pdbe.org/8u5b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8u5b RCSB], [https://www.ebi.ac.uk/pdbsum/8u5b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8u5b 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=8u5b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8u5b OCA], [https://pdbe.org/8u5b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8u5b RCSB], [https://www.ebi.ac.uk/pdbsum/8u5b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8u5b ProSAT]</span></td></tr> | ||
</table> | </table> | ||
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== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/CLD4_HUMAN CLD4_HUMAN] Channel-forming tight junction protein that mediates paracellular chloride transport in the kidney. Plays a critical role in the paracellular reabsorption of filtered chloride in the kidney collecting ducts. Claudins play a major role in tight junction-specific obliteration of the intercellular space, through calcium-independent cell-adhesion activity.[UniProtKB:O35054] | [https://www.uniprot.org/uniprot/CLD4_HUMAN CLD4_HUMAN] Channel-forming tight junction protein that mediates paracellular chloride transport in the kidney. Plays a critical role in the paracellular reabsorption of filtered chloride in the kidney collecting ducts. Claudins play a major role in tight junction-specific obliteration of the intercellular space, through calcium-independent cell-adhesion activity.[UniProtKB:O35054] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Claudins are a 27-member family of ~25 kDa membrane proteins that integrate into tight junctions to form molecular barriers at the paracellular spaces between endothelial and epithelial cells. As the backbone of tight junction structure and function, claudins are attractive targets for modulating tissue permeability to deliver drugs or treat disease. However, structures of claudins are limited due to their small sizes and physicochemical properties-these traits also make therapy development a challenge. Here we report the development of a synthetic antibody fragment (sFab) that binds human claudin-4 and the determination of a high-resolution structure of it bound to claudin-4/enterotoxin complexes using cryogenic electron microscopy. Structural and biophysical results reveal this sFabs mechanism of select binding to human claudin-4 over other homologous claudins and establish the ability of sFabs to bind hard-to-target claudins to probe tight junction structure and function. The findings provide a framework for tight junction modulation by sFabs for tissue-selective therapies. | ||
| + | |||
| + | Structural and biophysical insights into targeting of claudin-4 by a synthetic antibody fragment.,Erramilli SK, Dominik PK, Ogbu CP, Kossiakoff AA, Vecchio AJ Commun Biol. 2024 Jun 17;7(1):733. doi: 10.1038/s42003-024-06437-6. PMID:38886509<ref>PMID:38886509</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 8u5b" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Cryo-EM structure of human claudin-4 complex with Clostridium perfringens enterotoxin C-terminal domain and sFab COP-1
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