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XB-ART-27294
Biochem Biophys Res Commun 1988 Sep 30;1553:1237-43.
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Ouabain sensitivity of a chimeric alpha subunit (Torpedo/rat) of the (Na,K)ATPase expressed in Xenopus oocyte.

Noguchi S , Ohta T , Takeda K , Ohtsubo M , Kawamura M .


Abstract
A cDNA for a chimeric alpha subunit of the (Na,K)ATPase was constructed and expressed in Xenopus oocytes in order to elucidate structural features involved in ouabain sensitivity. A chimeric alpha subunit, in which the N-terminal 165 amino acid sequence of ouabain-resistant rat alpha subunit, including the first two transmembrane segments (M1 and M2), was replaced by a sequence from the corresponding region of ouabain-sensitive Torpedo alpha subunit, was ouabain-sensitive, suggesting that the M1-M2 junction is a site responsible for ouabain sensitivity of the (Na,K)ATPase.

PubMed ID: 2845966
Article link: Biochem Biophys Res Commun