Escherichia coli DNA polymerase II is stimulated by DNA polymerase III holoenzyme auxiliary subunits
نویسندگان
چکیده
منابع مشابه
DNA polymerase III holoenzyme of Escherichia coli.
DNA polymerase III holoenzyme has been purified from Escherichia coli HMS-83, using, as an assay, the conversion of coliphage G4 single-stranded DNA to the duplex replicative form. The holoenzyme consists of at least four different subunits: a, /I, y, and 6 of 140,000, 40,000, 52,000, and 32,000 daltons, respectively. The (Y subunit is DNA polymerase III, the dnaE gene product. The holoenzyme h...
متن کاملDNA polymerase III holoenzyme of Escherichia coli. Purification and resolution into subunits.
DNA polymerase III holoenzyme has been purified from Escherichia coli HMS-83, using, as an assay, the conversion of coliphage G4 single-stranded DNA to the duplex replicative form. The holoenzyme consists of at least four different subunits: alpha, beta, gamma, and delta of 140,000, 40,000, 52,000, and 32,000 daltons, respectively. The alpha subunit is DNA polymerase III, the dnaE gene product....
متن کاملThe gamma subunit of DNA polymerase III holoenzyme of Escherichia coli is produced by ribosomal frameshifting.
The tau and gamma subunits of DNA polymerase III holoenzyme are both products of the dnaX gene. Since tau and gamma are required as stoichiometric components of the replicative complex, a mechanism must exist for the cell to coordinate their synthesis and ensure that both subunits are present in an adequate quantity and ratio for assembly. We have proposed that gamma is produced by a translatio...
متن کاملDNA Polymerase III of Escherichia coli
DNA polymerase III, the core of the DNA polymerase III holoenzyme, has been purified Z&000-fold to 97% homogeneity from Escherichiu coli HMS-83. The enzyme contains three subunits: (Y, E, and 0 of 140,000, 25,000, and 10,000 daltons, respectively. The cy subunit has been previously shown to be a component of both DNA polymerase III and the more complex DNA polymerase III holoenzyme (Livingston,...
متن کاملDNA Polymerase III of Escherichia coli
DNA polymerase III, the core of the DNA polymerase III holoenzyme, has been purified Z&000-fold to 97% homogeneity from Escherichiu coli HMS-83. The enzyme contains three subunits: (Y, E, and 0 of 140,000, 25,000, and 10,000 daltons, respectively. The cy subunit has been previously shown to be a component of both DNA polymerase III and the more complex DNA polymerase III holoenzyme (Livingston,...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1991
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(20)64360-5