View source for 7tcp


==Structure of Xenopus KCNQ1-CaM==
<StructureSection load='7tcp' size='340' side='right'caption='[[7tcp]], [[Resolution|resolution]] 3.84&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7tcp]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Xenopus_laevis Xenopus laevis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7TCP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7TCP 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]] 3.84&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</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=7tcp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7tcp OCA], [https://pdbe.org/7tcp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7tcp RCSB], [https://www.ebi.ac.uk/pdbsum/7tcp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7tcp ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/KCNQ1_XENLA KCNQ1_XENLA] Potassium channel that plays an important role in a number of tissues, including heart, inner ear, stomach and colon (By similarity). Associates with KCNE beta subunits that modulates current kinetics (By similarity). Induces a voltage-dependent by rapidly activating and slowly deactivating potassium-selective outward current (By similarity). Promotes also a delayed voltage activated potassium current showing outward rectification characteristic (By similarity). During beta-adrenergic receptor stimulation participates in cardiac repolarization by associating with KCNE1 to form the I(Ks) cardiac potassium current that increases the amplitude and slows down the activation kinetics of outward potassium current I(Ks) (By similarity). When associated with KCNE3, forms the potassium channel that is important for cyclic AMP-stimulated intestinal secretion of chloride ions (By similarity). When associated with KCNE2, forms a heterooligomer complex leading to currents with an apparently instantaneous activation, a rapid deactivation process and a linear current-voltage relationship and decreases the amplitude of the outward current (By similarity). When associated with KCNE4, inhibits voltage-gated potassium channel activity (By similarity). When associated with KCNE5, this complex only conducts current upon strong and continued depolarization (By similarity).[UniProtKB:P51787][UniProtKB:P97414][UniProtKB:Q9Z0N7]

==See Also==
*[[Calmodulin 3D structures|Calmodulin 3D structures]]
*[[Potassium channel 3D structures|Potassium channel 3D structures]]
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Xenopus laevis]]
[[Category: Eldstrom J]]
[[Category: Fedida D]]
[[Category: Kyriakis E]]
[[Category: Van Petegem F]]
[[Category: Willegems K]]