5hk7: Difference between revisions
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==Bacterial sodium channel pore, 2.95 Angstrom resolution== | |||
<StructureSection load='5hk7' size='340' side='right' caption='[[5hk7]], [[Resolution|resolution]] 2.95Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5hk7]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5HK7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5HK7 FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=VVA:2-{[(S)-(2-AMINOETHOXY)(HYDROXY)PHOSPHORYL]OXY}ETHYL+HEPTADECANOATE'>VVA</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5hj8|5hj8]], [[5hk6|5hk6]], [[5hkd|5hkd]], [[5hkt|5hkt]], [[5hku|5hku]]</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5hk7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5hk7 OCA], [http://pdbe.org/5hk7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5hk7 RCSB], [http://www.ebi.ac.uk/pdbsum/5hk7 PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Voltage-gated ion channels (VGICs) are outfitted with diverse cytoplasmic domains that impact function. To examine how such elements may affect VGIC behavior, we addressed how the bacterial voltage-gated sodium channel (BacNaV) C-terminal cytoplasmic domain (CTD) affects function. Our studies show that the BacNaV CTD exerts a profound influence on gating through a temperature-dependent unfolding transition in a discrete cytoplasmic domain, the neck domain, proximal to the pore. Structural and functional studies establish that the BacNaV CTD comprises a bi-partite four-helix bundle that bears an unusual hydrophilic core whose integrity is central to the unfolding mechanism and that couples directly to the channel activation gate. Together, our findings define a general principle for how the widespread four-helix bundle cytoplasmic domain architecture can control VGIC responses, uncover a mechanism underlying the diverse BacNaV voltage dependencies, and demonstrate that a discrete domain can encode the temperature-dependent response of a channel. | |||
Unfolding of a Temperature-Sensitive Domain Controls Voltage-Gated Channel Activation.,Arrigoni C, Rohaim A, Shaya D, Findeisen F, Stein RA, Nurva SR, Mishra S, Mchaourab HS, Minor DL Jr Cell. 2016 Feb 25;164(5):922-36. doi: 10.1016/j.cell.2016.02.001. PMID:26919429<ref>PMID:26919429</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 5hk7" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Findeisen, F]] | [[Category: Findeisen, F]] | ||
[[Category: Minor, D L]] | |||
[[Category: Rohaim, A]] | [[Category: Rohaim, A]] | ||
[[Category: Shaya, D]] | [[Category: Shaya, D]] | ||
[[Category: Bacterial sodium channel pore]] | |||
[[Category: Transport protein]] | |||
