7cr2: Difference between revisions
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<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 [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> | ||
</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='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='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[7cr0|7cr0]], [[7cr1|7cr1]]</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='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='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'>[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> | <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> | ||
Revision as of 09:05, 20 January 2021
human KCNQ2 in complex with retigabinehuman KCNQ2 in complex with retigabine
Structural highlights
Publication Abstract from PubMedThe 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[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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