6uz3
From Proteopedia
(Difference between revisions)
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<StructureSection load='6uz3' size='340' side='right'caption='[[6uz3]], [[Resolution|resolution]] 3.50Å' scene=''> | <StructureSection load='6uz3' size='340' side='right'caption='[[6uz3]], [[Resolution|resolution]] 3.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[6uz3]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6UZ3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6UZ3 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6uz3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Aeqvi Aeqvi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6UZ3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6UZ3 FirstGlance]. <br> |
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><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=9Z9:(3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en'>9Z9</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><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=9Z9:(3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en'>9Z9</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</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">GFP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=6100 AEQVI])</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=6uz3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6uz3 OCA], [http://pdbe.org/6uz3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6uz3 RCSB], [http://www.ebi.ac.uk/pdbsum/6uz3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6uz3 ProSAT]</span></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=6uz3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6uz3 OCA], [http://pdbe.org/6uz3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6uz3 RCSB], [http://www.ebi.ac.uk/pdbsum/6uz3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6uz3 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/SCN5A_RAT SCN5A_RAT]] This protein mediates the voltage-dependent sodium ion permeability of excitable membranes. Assuming opened or closed conformations in response to the voltage difference across the membrane, the protein forms a sodium-selective channel through which Na(+) ions may pass in accordance with their electrochemical gradient. It is a tetrodotoxin-resistant Na(+) channel isoform. This channel is responsible for the initial upstroke of the action potential. Channel inactivation is regulated by intracellular calcium levels.[UniProtKB:Q14524][UniProtKB:Q9JJV9] | [[http://www.uniprot.org/uniprot/SCN5A_RAT SCN5A_RAT]] This protein mediates the voltage-dependent sodium ion permeability of excitable membranes. Assuming opened or closed conformations in response to the voltage difference across the membrane, the protein forms a sodium-selective channel through which Na(+) ions may pass in accordance with their electrochemical gradient. It is a tetrodotoxin-resistant Na(+) channel isoform. This channel is responsible for the initial upstroke of the action potential. Channel inactivation is regulated by intracellular calcium levels.[UniProtKB:Q14524][UniProtKB:Q9JJV9] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Voltage-gated sodium channel Nav1.5 generates cardiac action potentials and initiates the heartbeat. Here, we report structures of NaV1.5 at 3.2-3.5 A resolution. NaV1.5 is distinguished from other sodium channels by a unique glycosyl moiety and loss of disulfide-bonding capability at the NaVbeta subunit-interaction sites. The antiarrhythmic drug flecainide specifically targets the central cavity of the pore. The voltage sensors are partially activated, and the fast-inactivation gate is partially closed. Activation of the voltage sensor of Domain III allows binding of the isoleucine-phenylalanine-methionine (IFM) motif to the inactivation-gate receptor. Asp and Ala, in the selectivity motif DEKA, line the walls of the ion-selectivity filter, whereas Glu and Lys are in positions to accept and release Na(+) ions via a charge-delocalization network. Arrhythmia mutation sites undergo large translocations during gating, providing a potential mechanism for pathogenic effects. Our results provide detailed insights into Nav1.5 structure, pharmacology, activation, inactivation, ion selectivity, and arrhythmias. | ||
| + | |||
| + | Structure of the Cardiac Sodium Channel.,Jiang D, Shi H, Tonggu L, Gamal El-Din TM, Lenaeus MJ, Zhao Y, Yoshioka C, Zheng N, Catterall WA Cell. 2019 Dec 13. pii: S0092-8674(19)31326-1. doi: 10.1016/j.cell.2019.11.041. PMID:31866066<ref>PMID:31866066</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 6uz3" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Aeqvi]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Catterall, W A]] | [[Category: Catterall, W A]] | ||
Revision as of 09:53, 8 January 2020
Cardiac sodium channel
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