View source for 6pqo


==Cryo-EM structure of the human TRPA1 ion channel in complex with the covalent agonist JT010==
<SX load='6pqo' size='340' side='right' viewer='molstar' caption='[[6pqo]], [[Resolution|resolution]] 2.88&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6pqo]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6PQO OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6PQO FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=6OU:[(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyloxy-propan-2-yl]+(~{Z})-octadec-9-enoate'>6OU</scene>, <scene name='pdbligand=JT0:2-chloro-N-[4-(4-methoxyphenyl)-1,3-thiazol-2-yl]-N-(3-methoxypropyl)acetamide'>JT0</scene>, <scene name='pdbligand=LBN:1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine'>LBN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TRPA1, ANKTM1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6pqo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6pqo OCA], [http://pdbe.org/6pqo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6pqo RCSB], [http://www.ebi.ac.uk/pdbsum/6pqo PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6pqo ProSAT]</span></td></tr>
</table>
== Disease ==
[[http://www.uniprot.org/uniprot/TRPA1_HUMAN TRPA1_HUMAN]] Familial episodic pain syndrome with predominantly upper body involvement. The disease is caused by mutations affecting the gene represented in this entry. 
== Function ==
[[http://www.uniprot.org/uniprot/TRPA1_HUMAN TRPA1_HUMAN]] Receptor-activated non-selective cation channel involved in detection of pain and possibly also in cold perception and inner ear function (PubMed:25389312, PubMed:25855297). Has a central role in the pain response to endogenous inflammatory mediators and to a diverse array of volatile irritants, such as mustard oil, cinnamaldehyde, garlic and acrolein, an irritant from tears gas and vehicule exhaust fumes (PubMed:25389312, PubMed:20547126). Is also activated by menthol (in vitro)(PubMed:25389312). Acts also as an ionotropic cannabinoid receptor by being activated by delta(9)-tetrahydrocannabinol (THC), the psychoactive component of marijuana (PubMed:25389312). May be a component for the mechanosensitive transduction channel of hair cells in inner ear, thereby participating in the perception of sounds. Probably operated by a phosphatidylinositol second messenger system (By similarity).[UniProtKB:Q8BLA8]<ref>PMID:20547126</ref> <ref>PMID:25389312</ref> <ref>PMID:25855297</ref>  
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== Publication Abstract from PubMed ==
Transient receptor potential channel subfamily A member 1 (TRPA1) is a Ca(2+)-permeable cation channel that serves as one of the primary sensors of environmental irritants and noxious substances. Many TRPA1 agonists are electrophiles that are recognized by TRPA1 via covalent bond modifications of specific cysteine residues located in the cytoplasmic domains. However, a mechanistic understanding of electrophile sensing by TRPA1 has been limited due to a lack of high-resolution structural information. Here, we present the cryoelectron microscopy (cryo-EM) structures of nanodisc-reconstituted ligand-free TRPA1 and TRPA1 in complex with the covalent agonists JT010 and BITC at 2.8, 2.9, and 3.1 A, respectively. Our structural and functional studies provide the molecular basis for electrophile recognition by the extraordinarily reactive C621 in TRPA1 and mechanistic insights into electrophile-dependent conformational changes in TRPA1. This work also provides a platform for future drug development targeting TRPA1.

Structural Insights into Electrophile Irritant Sensing by the Human TRPA1 Channel.,Suo Y, Wang Z, Zubcevic L, Hsu AL, He Q, Borgnia MJ, Ji RR, Lee SY Neuron. 2019 Dec 6. pii: S0896-6273(19)31009-8. doi:, 10.1016/j.neuron.2019.11.023. PMID:31866091<ref>PMID:31866091</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 6pqo" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</SX>
[[Category: Human]]
[[Category: Large Structures]]
[[Category: Borgnia, M J]]
[[Category: He, Q]]
[[Category: Hsu, A L]]
[[Category: Ji, R R]]
[[Category: Lee, S Y]]
[[Category: Suo, Y]]
[[Category: Wang, Z]]
[[Category: Zubcevic, L]]
[[Category: Ion channel]]
[[Category: Irritant sensing]]
[[Category: Jt010]]
[[Category: Membrane protein]]
[[Category: Transport protein]]
[[Category: Trp channel]]
[[Category: Trpa channel]]
[[Category: Trpa1 channel]]