Expression Cloning of KCRF, a Potassium Channel Regulatory Factor

Keren-Raifman, Tal; Ivanina, Tatiana; Bismuth, Yona; Dascal, Nathan

doi:10.1006/bbrc.2000.3240

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Regulation Of Kir21 Expression In Skeletal Muscle1

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“…On the other hand, mRNA translation might be tightly controlled. Recently, a K ϩ channel regulatory factor was isolated and suggested to regulate synthesis of Kir2.1, among other tested potassium channels, by binding to certain RNA motifs (Keren-Raifman et al, 2000). K + channel regulatory factor appeared strongly expressed in skeletal muscle, but its possible role on Kir2.1 expression during myoblast terminal differentiation remains to be examined.…”

Section: Regulation Of Kir21 Expression In Skeletal Musclementioning

confidence: 99%

Human Myoblast Fusion Requires Expression of Functional Inward Rectifier Kir2.1 Channels

Fischer-Lougheed¹,

Liu

Espinos³

et al. 2001

The Journal of Cell Biology

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Myoblast fusion is essential to skeletal muscle development and repair. We have demonstrated previously that human myoblasts hyperpolarize, before fusion, through the sequential expression of two K+ channels: an ether-à-go-go and an inward rectifier. This hyperpolarization is a prerequisite for fusion, as it sets the resting membrane potential in a range at which Ca2+ can enter myoblasts and thereby trigger fusion via a window current through α1H T channels.

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Section: Regulation Of Kir21 Expression In Skeletal Musclementioning

confidence: 99%