Single-channel basis for the slow activation of the repolarizing cardiac potassium current, I(Ks)

scientific article published on 19 February 2013

Single-channel basis for the slow activation of the repolarizing cardiac potassium current, I(Ks) is …
instance of (P31):
scholarly articleQ13442814

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P819ADS bibcode2013PNAS..110E.996W
P356DOI10.1073/PNAS.1214875110
P932PMC publication ID3600500
P698PubMed publication ID23431135
P5875ResearchGate publication ID235691682

P2093author name stringDavid Fedida
Zhuren Wang
Jodene Eldstrom
Daniel Werry
P2860cites workRequirement of a macromolecular signaling complex for beta adrenergic receptor modulation of the KCNQ1-KCNE1 potassium channelQ24292184
Positional cloning of a novel potassium channel gene: KVLQT1 mutations cause cardiac arrhythmiasQ24311437
Coassembly of K(V)LQT1 and minK (IsK) proteins to form cardiac I(Ks) potassium channelQ24318271
Modeling of the adrenergic response of the human IKs current (hKCNQ1/hKCNE1) stably expressed in HEK-293 cellsQ39945565
Rapid chemically induced changes of PtdIns(4,5)P2 gate KCNQ ion channelsQ40228821
Probing the contribution of IKs to canine ventricular repolarization: key role for beta-adrenergic receptor stimulation.Q42441516
Multiple conductances in the large K+ channel from Chara corallina shown by a transient analysis methodQ42581161
Chromanol 293B binding in KCNQ1 (Kv7.1) channels involves electrostatic interactions with a potassium ion in the selectivity filterQ42613991
Gating properties of inward-rectifier potassium channels: effects of permeant ionsQ43785725
Accumulation of slowly activating delayed rectifier potassium current (IKs) in canine ventricular myocytes.Q44486244
Restricting excessive cardiac action potential and QT prolongation: a vital role for IKs in human ventricular muscle.Q46675989
Mutation in the KCNQ1 gene leading to the short QT-interval syndromeQ47438291
Multiple gating modes and the effect of modulating factors on the μI sodium channelQ48636805
Mechanisms by which atrial fibrillation-associated mutations in the S1 domain of KCNQ1 slow deactivation of IKs channelsQ48745779
Inhibition of IKs in guinea pig cardiac myocytes and guinea pig IsK channels by the chromanol 293B.Q48985465
Increase of the single-channel conductance of KvLQT1 potassium channels induced by the association with minK.Q50741839
Calmodulin is essential for cardiac IKS channel gating and assembly: impaired function in long-QT mutations.Q51809148
Stochastic properties of ion channel openings and bursts in a membrane patch that contains two channels: evidence concerning the number of channels present when a record containing only single openings is observed.Q52480990
Stochastic Properties of Ion Channel Openings and Bursts in a Membrane Patch that Contains Two Channels: Evidence Concerning the Number of Channels Present when a Record Containing Only Single Openings is ObservedQ57908067
A reinterpretation of mammalian sodium channel gating based on single channel recordingQ59062717
KCNQ1 gain-of-function mutation in familial atrial fibrillationQ24338486
Activation of Shaker potassium channels. III. An activation gating model for wild-type and V2 mutant channelsQ24642407
Activation of shaker potassium channels. I. Characterization of voltage-dependent transitionsQ24642455
K(V)LQT1 and lsK (minK) proteins associate to form the I(Ks) cardiac potassium currentQ28295470
KCNE1 alters the voltage sensor movements necessary to open the KCNQ1 channel gateQ28300574
A kinetic study on the stereospecific inhibition of KCNQ1 and I(Ks) by the chromanol 293BQ28366030
Stoichiometry of the KCNQ1 - KCNE1 ion channel complex.Q28583726
Molecular mechanism and functional significance of the MinK control of the KvLQT1 channel activityQ33175234
Mechanistic basis for LQT1 caused by S3 mutations in the KCNQ1 subunit of IKs.Q33814293
Activation-dependent subconductance levels in the drk1 K channel suggest a subunit basis for ion permeation and gatingQ33916837
Estimating single-channel kinetic parameters from idealized patch-clamp data containing missed eventsQ34016948
A geometric sequence that accurately describes allowed multiple conductance levels of ion channels: the "three-halves (3/2) rule"Q34018358
Gating of I(sK) channels expressed in Xenopus oocytesQ34167776
Activation and inactivation of homomeric KvLQT1 potassium channels.Q34168644
A direct optimization approach to hidden Markov modeling for single channel kineticsQ34174076
Restoration of single-channel currents using the segmental k-means method based on hidden Markov modelingQ34184964
Allosteric features of KCNQ1 gating revealed by alanine scanning mutagenesisQ34568142
KCNE1 enhances phosphatidylinositol 4,5-bisphosphate (PIP2) sensitivity of IKs to modulate channel activityQ35021903
Subunit interaction determines IKs participation in cardiac repolarization and repolarization reserveQ35676902
Allosteric gating mechanism underlies the flexible gating of KCNQ1 potassium channelsQ35935730
Phosphatidylinositol-4,5-bisphosphate, PIP2, controls KCNQ1/KCNE1 voltage-gated potassium channels: a functional homology between voltage-gated and inward rectifier K+ channels.Q36266824
Shaker potassium channel gating. I: Transitions near the open stateQ36411424
Shaker potassium channel gating. III: Evaluation of kinetic models for activationQ36411441
Two components of cardiac delayed rectifier K+ current. Differential sensitivity to block by class III antiarrhythmic agentsQ36434545
Intermediate conductances during deactivation of heteromultimeric Shaker potassium channelsQ36436105
Single-channel properties of IKs potassium channelsQ36436185
Single-channel characteristics of wild-type IKs channels and channels formed with two minK mutants that cause long QT syndromeQ36436190
Selectivity changes during activation of mutant Shaker potassium channelsQ36445050
K channel subconductance levels result from heteromeric pore conformationsQ36493498
Slow delayed rectifier potassium current (IKs) and the repolarization reserve.Q36730716
Fluorescence detection of the movement of single KcsA subunits reveals cooperativity.Q37068443
Beta-adrenergic stimulation of calcium channels occurs by potentiation of high-activity gating modesQ37678024
Ion channel subconductance statesQ38177363
P433issue11
P407language of work or nameEnglishQ1860
P304page(s)E996-1005
P577publication date2013-02-19
P1433published inProceedings of the National Academy of Sciences of the United States of AmericaQ1146531
P1476titleSingle-channel basis for the slow activation of the repolarizing cardiac potassium current, I(Ks)
P478volume110

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cites work (P2860)
Q57187143Effects of β-subunit on gating of a potassium ion channel: Molecular simulations of cardiac IKs activation
Q28551018Experimentally-Based Computational Investigation into Beat-To-Beat Variability in Ventricular Repolarization and Its Response to Ionic Current Inhibition
Q92658083I Ks ion-channel pore conductance can result from individual voltage sensor movements
Q47127280Inactivation of KCNQ1 potassium channels reveals dynamic coupling between voltage sensing and pore opening
Q37028794KCNE1 and KCNE3: The yin and yang of voltage-gated K(+) channel regulation
Q33603925KCNE1 divides the voltage sensor movement in KCNQ1/KCNE1 channels into two steps
Q46181904KCNQ1 autoantibodies: another way to regulate IKs.
Q27027928KCNQ1 channel modulation by KCNE proteins via the voltage-sensing domain
Q89419570Modeling the Hidden Pathways of IKs Channel Activation
Q38696328Photo-Cross-Linking of IKs Demonstrates State-Dependent Interactions between KCNE1 and KCNQ1.
Q44505007Potassium channels in the heart: structure, function and regulation.
Q38632751Purification and structural study of the voltage-sensor domain of the human KCNQ1 potassium ion channel
Q90358793Single channel kinetic analysis of the cAMP effect on IKs mutants, S209F and S27D/S92D
Q53042866Steric hindrance between S4 and S5 of the KCNQ1/KCNE1 channel hampers pore opening.
Q57490689The I Channel Response to cAMP Is Modulated by the KCNE1:KCNQ1 Stoichiometry
Q90399746The KV 7 channel activator retigabine suppresses mouse urinary bladder afferent nerve activity without affecting detrusor smooth muscle K+ channel currents
Q62495888The Structural Basis of IKs Ion-Channel Activation: Mechanistic Insights from Molecular Simulations
Q43116071Understanding the microscopic mechanisms for LQT1 needs a global view of the I(Ks) channel
Q39477676Unnatural amino acid photo-crosslinking of the IKs channel complex demonstrates a KCNE1:KCNQ1 stoichiometry of up to 4:4.
Q90095358Upgraded molecular models of the human KCNQ1 potassium channel
Q38690407Voltage-Dependent Gating: Novel Insights from KCNQ1 Channels
Q38688887cAMP-dependent regulation of IKs single-channel kinetics

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