7cr2: Difference between revisions

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<StructureSection load='7cr2' size='340' side='right'caption='[[7cr2]], [[Resolution|resolution]] 3.20&Aring;' scene=''>
<StructureSection load='7cr2' size='340' side='right'caption='[[7cr2]], [[Resolution|resolution]] 3.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[7cr2]] 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=7CR2 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=7CR2 FirstGlance]. <br>
<table><tr><td colspan='2'>[[7cr2]] is a 4 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=7CR2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7CR2 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FBX:ethyl+N-[2-azanyl-4-[(4-fluorophenyl)methylamino]phenyl]carbamate'>FBX</scene></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]] 3.2&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[7cr0|7cr0]], [[7cr1|7cr1]]</div></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FBX:ethyl+N-[2-azanyl-4-[(4-fluorophenyl)methylamino]phenyl]carbamate'>FBX</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KCNQ2 ([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'>[https://proteopedia.org/fgij/fg.htm?mol=7cr2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7cr2 OCA], [https://pdbe.org/7cr2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7cr2 RCSB], [https://www.ebi.ac.uk/pdbsum/7cr2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7cr2 ProSAT]</span></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=7cr2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7cr2 OCA], [http://pdbe.org/7cr2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=7cr2 RCSB], [http://www.ebi.ac.uk/pdbsum/7cr2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=7cr2 ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/KCNQ2_HUMAN KCNQ2_HUMAN]
The voltage-gated potassium channel KCNQ2 is responsible for M-current in neurons and is an important drug target to treat epilepsy, pain and several other diseases related to neuronal hyper-excitability. A list of synthetic compounds have been developed to directly activate KCNQ2, yet our knowledge of their activation mechanism is limited, due to lack of high-resolution structures. Here, we report cryo-electron microscopy (cryo-EM) structures of the human KCNQ2 determined in apo state and in complex with two activators, ztz240 or retigabine, which activate KCNQ2 through different mechanisms. The activator-bound structures, along with electrophysiology analysis, reveal that ztz240 binds at the voltage-sensing domain and directly stabilizes it at the activated state, whereas retigabine binds at the pore domain and activates the channel by an allosteric modulation. By accurately defining ligand-binding sites, these KCNQ2 structures not only reveal different ligand recognition and activation mechanisms, but also provide a structural basis for drug optimization and design.


Molecular basis for ligand activation of the human KCNQ2 channel.,Li X, Zhang Q, Guo P, Fu J, Mei L, Lv D, Wang J, Lai D, Ye S, Yang H, Guo J Cell Res. 2020 Sep 3. pii: 10.1038/s41422-020-00410-8. doi:, 10.1038/s41422-020-00410-8. PMID:32884139<ref>PMID:32884139</ref>
==See Also==
 
*[[Potassium channel 3D structures|Potassium channel 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7cr2" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Guo, J]]
[[Category: Guo J]]
[[Category: Li, X]]
[[Category: Li X]]
[[Category: Lv, D]]
[[Category: Lv D]]
[[Category: Wang, J]]
[[Category: Wang J]]
[[Category: Ye, S]]
[[Category: Ye S]]
[[Category: Ion channel]]
[[Category: Transport protein]]

Latest revision as of 13:51, 27 March 2024

human KCNQ2 in complex with retigabinehuman KCNQ2 in complex with retigabine

Structural highlights

7cr2 is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Electron Microscopy, Resolution 3.2Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

KCNQ2_HUMAN

See Also

7cr2, resolution 3.20Å

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