Nature of plasmalemmal functional "hemichannels".

Nature of plasmalemmal functional "hemichannels".
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DOI:
10.1016/j.bbamem.2011.06.005
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发表时间:
2012-08
影响因子:
3.4
通讯作者:
Scemes, Eliana
Scemes, Eliana
中科院分区:
生物学3区
文献类型:
--
作者:
Scemes, Eliana

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The molecular identity of the protein forming “hemichannels” at non-junctional membranes is disputed. The family of gap junction proteins, innexins, connexins, and pannexins share several common features, including permeability characteristics and sensitivity to blocking agents. Such overlap in properties renders the identification of which of these protein species actually establishes the non-junctional membrane conductance and permeability quite complicated, especially because in vertebrates pannexins and connexins have largely overlapping distributions in tissues. Recently, attempts to establish criteria to identify events that are “hemichannel” mediated and those to allow the distinction between connexin- from pannexin-mediated events have been proposed. Here, I present an update on that topic and discuss the most recent findings related to the nature of functional “hemichannels” focusing on Connexin43 and Pannexin1.
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