7n7p: Difference between revisions

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'''Unreleased structure'''


The entry 7n7p is ON HOLD
==Cryo-EM structure of human TMEM120A==
<StructureSection load='7n7p' size='340' side='right'caption='[[7n7p]], [[Resolution|resolution]] 3.24&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7n7p]] 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=7N7P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7N7P 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]] 3.24&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=COA:COENZYME+A'>COA</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=7n7p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7n7p OCA], [https://pdbe.org/7n7p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7n7p RCSB], [https://www.ebi.ac.uk/pdbsum/7n7p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7n7p ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TACAN_HUMAN TACAN_HUMAN] Ion channel involved in sensing mechanical pain. Contributes to mechanosensitive currents in nocireceptors and detecting mechanical pain stimuli (By similarity). May also be required for efficient adipogenesis (PubMed:26024229).[UniProtKB:Q8C1E7]<ref>PMID:26024229</ref>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
TMEM120A, also named as TACAN, is a novel membrane protein highly conserved in vertebrates and was recently proposed to be a mechanosensitive channel involved in sensing mechanical pain. Here we present the single-particle cryogenic electron microscopy (cryo-EM) structure of human TMEM120A, which forms a tightly packed dimer with extensive interactions mediated by the N-terminal coiled coil domain (CCD), the C-terminal transmembrane domain (TMD), and the re-entrant loop between the two domains. The TMD of each TMEM120A subunit contains six transmembrane helices (TMs) and has no clear structural feature of a channel protein. Instead, the six TMs form an alpha-barrel with a deep pocket where a coenzyme A (CoA) molecule is bound. Intriguingly, some structural features of TMEM120A resemble those of elongase for very long-chain fatty acids (ELOVL) despite the low sequence homology between them, pointing to the possibility that TMEM120A may function as an enzyme for fatty acid metabolism, rather than a mechanosensitive channel.


Authors:  
TMEM120A is a coenzyme A-binding membrane protein with structural similarities to ELOVL fatty acid elongase.,Xue J, Han Y, Baniasadi H, Zeng W, Pei J, Grishin NV, Wang J, Tu BP, Jiang Y Elife. 2021 Aug 10;10:e71220. doi: 10.7554/eLife.71220. PMID:34374645<ref>PMID:34374645</ref>


Description:  
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
[[Category: Unreleased Structures]]
</div>
<div class="pdbe-citations 7n7p" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Han Y]]
[[Category: Jiang Y]]
[[Category: Xue J]]
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