Results 11 to 20 of about 441,914 (371)
When Is a Potassium Channel Not a Potassium Channel? [PDF]
Function (Oxf), 2022 AbstractEver since they were first observed in Purkinje fibers of the heart, funny channels have had close connections to potassium channels. Indeed, funny channels were initially thought to produce a potassium current in the heart called IK2. However, funny channels are completely unlike potassium channels in ways that make their contributions to the ...
Accili E.
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Inactivation in the potassium channel KcsA
Journal of Structural Biology: X, 2019 Inactivation, the slow cessation of transmission after activation, is a general feature of potassium channels. It is essential for their function, and malfunctions in inactivation leads to numerous pathologies.
Yunyao Xu, Ann E. McDermott
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Structure of potassium channels [PDF]
Cellular and Molecular Life Sciences, 2015 Potassium channels ubiquitously exist in nearly all kingdoms of life and perform diverse but important functions. Since the first atomic structure of a prokaryotic potassium channel (KcsA, a channel from Streptomyces lividans) was determined, tremendous progress has been made in understanding the mechanism of potassium channels and channels conducting ...
Pasi Purhonen +4 more
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Drunk potassium channels [PDF]
Europace, 2011 We report the case of a 42-year-old woman who was admitted due to alcohol induced dehydration leading to cardiac symptoms. On physical examination severe hypokalaemia and long QT syndrome were apparent. During potassium (K+) supplementation we simultaneously observed QT interval recovery.
Nia, Amir M. +3 more
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Potassium Channels in Epilepsy [PDF]
Cold Spring Harbor Perspectives in Medicine, 2016 This review attempts to give a concise and up-to-date overview on the role of potassium channels in epilepsies. Their role can be defined from a genetic perspective, focusing on variants and de novo mutations identified in genetic studies or animal models with targeted, specific mutations in genes coding for a member of the large potassium channel ...
Jakob Wolfart, Rüdiger Köhling
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The effect of potential-dependent potassium uptake on membrane potential in rat brain mitochondria [PDF]
The Ukrainian Biochemical Journal, 2013 The effect of potential-dependent potassium uptake on the transmembrane potential difference (ΔΨm) in rat brain mitochondria has been studied. It was shown that in potassium concentration range of 0-120 mM the potential-dependent K+-uptake into matrix ...
O. V. Akopova +5 more
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Molecules, 2022 Scorpion venom is a rich source of promising therapeutic compounds, such as highly selective ion channel ligands with potent pharmacological effects. Bot33 is a new short polypeptide of 38 amino acid residues with six cysteines purified from the venom of
Rym ElFessi +6 more
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Mitochondrial Potassium Channels as Druggable Targets
Biomolecules, 2020 Mitochondrial potassium channels have been described as important factors in cell pro-life and death phenomena. The activation of mitochondrial potassium channels, such as ATP-regulated or calcium-activated large conductance potassium channels, may have ...
Antoni Wrzosek +3 more
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Toxins, 2015 The potassium channels were recently found to be inhibited by animal toxin-like human β-defensin 2 (hBD2), the first defensin blocker of potassium channels. Whether there are other defensin blockers from different organisms remains an open question. Here,
Fang Xiang +7 more
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FEBS Letters, 2003 The atomic structures of K+ channels have added a new dimension to our understanding of K+ channel function. I will briefly review how structures have influenced our views on ion conduction, gating of the pore, and voltage sensing.
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