Balmukhanov TS, Erekenov AM, Ajtkhozhina NA. Isolation of DNA polymerase alpha from germinated wheat embryos.
Mol Biol Rep 1992;
16:11-6. [PMID:
1545780 DOI:
10.1007/bf00788748]
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Abstract
DNA polymerase alpha from germinated wheat embryos was purified by ammonium sulphate fractionation, chromatography on DEAE-Toyopearl, followed by phosphocellulose and heparin Sepharose columns. The specific activity of the purified enzyme was more than 60,000 units/mg. It belongs to the alpha-type according to the large molecular mass, high sensitivity to NEM, aphidicoline, 200 mM KCl, low sensitivity to ethidium bromide and the absence of inhibition by ddTTP. DNA polymerase alpha consists of four subunits as shown by SDS-PAGE and seems to be homogeneous under non-denaturing conditions.
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