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XB-ART-27298
FEBS Lett 1988 Sep 26;2381:201-4.
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Functional activity of oligosaccharide-deficient (Na,K)ATPase expressed in Xenopus oocytes.

Takeda K, Noguchi S, Sugino A, Kawamura M.


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(Na,K)ATPase from Torpedo californica was expressed in Xenopus laevis oocytes in the presence of tunicamycin by injecting mRNAs for the alpha- and beta-subunits derived from the cloned cDNAs into the oocytes. The oligosaccharide-deficient ATPase thus synthesized was transported to the oocyte plasma membrane, where it exhibited virtually the same ATPase activity, ouabain-binding capacity and 86Rb+ transport activity as the fully glycosylated enzyme. We conclude that the oligosaccharide chains on the beta-subunit has no effect on the catalytic activities of (Na,K)ATPase.

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