View source for 13lt


==Structure of human TRPV3-G568D Olmsted syndrome mutant in the 2-fold symmetrical open state==
<StructureSection load='13lt' size='340' side='right'caption='[[13lt]], [[Resolution|resolution]] 3.25&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[13lt]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Aequorea_victoria Aequorea victoria] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=13LT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=13LT 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]] 3.25&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=POV:(2S)-3-(HEXADECANOYLOXY)-2-[(9Z)-OCTADEC-9-ENOYLOXY]PROPYL+2-(TRIMETHYLAMMONIO)ETHYL+PHOSPHATE'>POV</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=13lt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=13lt OCA], [https://pdbe.org/13lt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=13lt RCSB], [https://www.ebi.ac.uk/pdbsum/13lt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=13lt ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/TRPV3_HUMAN TRPV3_HUMAN] Mutilating palmoplantar keratoderma with periorificial keratotic plaques. The disease is caused by mutations affecting the gene represented in this entry.  The disease is caused by mutations affecting the gene represented in this entry.
== Function ==
[https://www.uniprot.org/uniprot/TRPV3_HUMAN TRPV3_HUMAN] Putative receptor-activated non-selective calcium permeant cation channel. It is activated by innocuous (warm) temperatures and shows an increased response at noxious temperatures greater than 39 degrees Celsius. Activation exhibits an outward rectification. May associate with TRPV1 and may modulate its activity. Is a negative regulator of hair growth and cycling: TRPV3-coupled signaling suppresses keratinocyte proliferation in hair follicles and induces apoptosis and premature hair follicle regression (catagen).<ref>PMID:12077604</ref> <ref>PMID:12077606</ref> <ref>PMID:21593771</ref> [https://www.uniprot.org/uniprot/GFP_AEQVI GFP_AEQVI] Energy-transfer acceptor. Its role is to transduce the blue chemiluminescence of the protein aequorin into green fluorescent light by energy transfer. Fluoresces in vivo upon receiving energy from the Ca(2+)-activated photoprotein aequorin.
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== Publication Abstract from PubMed ==
Mutations in TRPV3, a temperature-sensitive ion channel critical for skin physiology, cause severe genodermatosis called Olmsted syndrome (OS). Here we integrate single-channel recordings and cryo-EM to characterize five OS mutants. All exhibit reduced temperature sensitivity in the temperature range relevant to normal skin physiology and disrupt structural elements stabilizing non-conducting states, including vanilloid lipid coordination and S4-S5 linker-TRP helix contacts. Despite shared gain-of-function phenotype, the mutations cause different distributions of the TRPV3 closed, open, and inactivated states. One mutation expands the conformational ensemble with noncanonical two-fold-symmetrical states featuring dramatic domain swapping. Our findings highlight conserved TRP channel gating mechanisms and suggest that OS mutations alter TRPV3 function by triggering the conformational wave that mediates gating in wild-type channels. These insights establish a framework to decode genotype-structure-function relationships in TRP channelopathies and guide future therapeutic strategies.

Structural diversity of heat-sensing channel TRPV3 with Olmsted syndrome mutations.,Khau J, Purohit R, Nadezhdin KD, Talyzina IA, Sobolevsky AI Nat Commun. 2026 Jun 20. doi: 10.1038/s41467-026-74687-5. PMID:42323291<ref>PMID:42323291</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 13lt" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Aequorea victoria]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Khau J]]
[[Category: Nadezhdin KD]]
[[Category: Purohit R]]
[[Category: Sobolevsky AI]]