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. 1986 Nov;6(11):3884–3890. doi: 10.1128/mcb.6.11.3884

Rat-brain Na,K-ATPase beta-chain gene: primary structure, tissue-specific expression, and amplification in ouabain-resistant HeLa C+ cells.

R W Mercer, J W Schneider, A Savitz, J Emanuel, E J Benz Jr, R Levenson
PMCID: PMC367151  PMID: 3025616

Abstract

We deduced the complete amino acid sequence of the rat brain Na,K-ATPase beta-subunit from cDNA. The rat brain beta-subunit exhibits a high degree of primary sequence and secondary structural homology with the human and Torpedo beta-subunit polypeptides. Analysis of rat tissue RNA reveals that the beta-subunit gene encodes four separate mRNA species which are expressed in a tissue-specific fashion. In ouabain-resistant HeLa C+ cells, beta-subunit DNA sequences are amplified (approximately 20-fold) and beta-subunit mRNAs are overproduced relative to levels in parental HeLa cells. These results suggest that the beta-subunit plays an important role in Na,K-ATPase structure-function and in the mechanism underlying cellular resistance to the cardiac glycosides.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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