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In this review, we describe key signaling pathways regulating potassium channels present in the inner mitochondrial membrane. The signaling cascades covered here include phosphorylation, redox reactions, modulation by calcium ions and nucleotides. The following types of potassium channels have been identified in the inner mitochondrial membrane of various tissues: ATP-sensitive, Ca2+-activated, voltage-gated and two-pore domain potassium channels. The direct roles of these channels involve regulation of mitochondrial respiration, membrane potential and synthesis of reactive oxygen species (ROS). Changes in channel activity lead to diverse pro-life and pro-death responses in different cell types. Hence, characterizing the signaling pathways regulating mitochondrial potassium channels will facilitate understanding the physiological role of these proteins. Additionally, we describe in this paper certain regulatory mechanisms, which are unique to mitochondrial potassium channels. Copyright © 2020 The Author(s). Published by Elsevier Ltd.. All rights reserved.


Daria Rotko, Wolfram S Kunz, Adam Szewczyk, Bogusz Kulawiak. Signaling pathways targeting mitochondrial potassium channels. The international journal of biochemistry & cell biology. 2020 Aug;125:105792

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PMID: 32574707

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