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XB-ART-19372
FEBS Lett 1995 Aug 14;3701-2:32-6.
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Alternative splicing of the human Shaker K+ channel beta 1 gene and functional expression of the beta 2 gene product.

McCormack K , McCormack T , Tanouye M , Rudy B , Stühmer W .


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Mammalian voltage-activated Shaker K+ channels associate with at least three cytoplasmic proteins: Kv beta 1, Kv beta 2 and Kv beta 3. These beta subunits contain variable N-termini, which can modulate the inactivation of Shaker alpha subunits, but are homologous throughout an aldo-keto reductase core. Human and ferret beta 3 proteins are identical with rat beta 1 throughout the core while beta 2 proteins are not; beta 2 also contains a shorter N-terminus and has no reported physiological role. We report that human beta 1 and beta 3 are derived from the same gene and that beta 2 modulates the inactivation properties of Kv1.4 alpha subunits.

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Species referenced: Xenopus laevis
Genes referenced: kcna4