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. 1985 Jul;78(3):642–644. doi: 10.1104/pp.78.3.642

Target Molecular Size of the Red Beet Plasma Membrane ATPase 1

Donald P Briskin 1,2, W Robert Thornley 1,2, Joseph L Roti-Roti 1,2
PMCID: PMC1064791  PMID: 16664298

Abstract

Radiation inactivation of the red beet (Beta vulgaris L.) plasma membrane ATPase was carried out using γ-ray radiation from a 137Cs source. Inactivation of vanadate-sensitive ATPase activity by γ-ray radiation followed an exponential decline with increasing total dose, indicating a single target size calculated to have a molecular weight of about 228,000. Since the catalytic subunit of the red beet plasma membrane ATPase has been demonstrated to have a molecular weight of about 100,000 by dodecyl-sulfate gel electrophoresis following 32P-phosphorylation, it is suggested that the native enzyme may exist, at least, as a dimer of catalytic subunits.

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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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