Target molecular size of the red beet plasma membrane ATPase.
نویسندگان
چکیده
Radiation inactivation of the red beet (Beta vulgaris L.) plasma membrane ATPase was carried out using gamma-ray radiation from a (137)Cs source. Inactivation of vanadate-sensitive ATPase activity by gamma-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 (32)P-phosphorylation, it is suggested that the native enzyme may exist, at least, as a dimer of catalytic subunits.
منابع مشابه
Target Molecular Size of the Red Beet Plasma Membrane
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ورودعنوان ژورنال:
- Plant physiology
دوره 78 3 شماره
صفحات -
تاریخ انتشار 1985