2012
DOI: 10.3389/fphar.2012.00063
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Regulation of Voltage-Activated K+ Channel Gating by Transmembrane β Subunits

Abstract: Voltage-activated K+ (KV) channels are important for shaping action potentials and maintaining resting membrane potential in excitable cells. KV channels contain a central pore-gate domain (PGD) surrounded by four voltage-sensing domains (VSDs). The VSDs will change conformation in response to alterations of the membrane potential thereby inducing the opening of the PGD. Many KV channels are heteromeric protein complexes containing auxiliary β subunits. These β subunits modulate channel expression and activity… Show more

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Cited by 48 publications
(47 citation statements)
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References 151 publications
(226 reference statements)
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“…In large part, diversity is mediated by families of accessory ␤-and ␥-subunits that regulate BK channel biophysical properties and pharmacology (recent reviews, Sun et al 2012;Yan and Aldrich 2012). BK channels have a long-established role in repolarizing action potentials (APs) and contributing to the fast afterhyperpolarization (fAHP) in many neurons (Sah 1996;Sah and Faber 2002).…”
Section: Given Their Broad Expression These Findings May Be Relevantmentioning
confidence: 99%
“…In large part, diversity is mediated by families of accessory ␤-and ␥-subunits that regulate BK channel biophysical properties and pharmacology (recent reviews, Sun et al 2012;Yan and Aldrich 2012). BK channels have a long-established role in repolarizing action potentials (APs) and contributing to the fast afterhyperpolarization (fAHP) in many neurons (Sah 1996;Sah and Faber 2002).…”
Section: Given Their Broad Expression These Findings May Be Relevantmentioning
confidence: 99%
“…Regulatory β subunits associate with Kv channels to modulate the gating properties of Kv channels 2 . KCNQ1 (Kv7.1 or KvLQT1) is expressed in many different tissues, such as the inner ear, the kidney, and the heart 3 .…”
Section: Introductionmentioning
confidence: 99%
“…KCNQ1 asubunits can interact with any one of the five KCNE auxiliary bsubunits, resulting in different channel functional characteristics (Abbott et al, 2001;Nakajo and Kubo, 2011;Sun et al, 2012;Wrobel et al, 2012). Co-assembly of KCNQ1 with KCNE1 generates the I KS K + current that is vital for the proper repolarization of the cardiac action potential (Barhanin et al, 1996;Nerbonne and Kass, 2005;Sanguinetti et al, 1996).…”
Section: Introductionmentioning
confidence: 99%