Nuclear Deoxyribonucleic Acid Polymerase
نویسندگان
چکیده
منابع مشابه
Role of deoxyribonucleic acid polymerase beta in nuclear deoxyribonucleic acid synthesis.
Exonuclease activity has been measured in preparations of both enzymes. The activity associated with DNA polymerase a requires denatured DNA, Mg2+ and is ATP-dependent. The polymerase b-associated nuclease requires denatured DNA and Mg2+ or Caz+. Studies of the distribution of these enzymes during the cell cycle have shown that extracts of cells harvested at the time of nuclear DNA synthesis (C...
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DNA polymerase III has been purified 4,500-fold from the Escherichia coli mutant, HMS83, which lacks DNA polymerases I and II. When subjected to disc gel electrophoresis, the most purified fraction exhibits a single major protein band from which enzymatic activity may be recovered. Polyacrylamide gel electrophoresis under denaturing conditions produces two protein bands with molecular weights o...
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A soluble DNA-dependent DNA polymerase was extracted from wheat embryos. In vitro, the incorporation of radioactive thymidine triphosphate into acid-insoluble material is dependent upon the presence of the enzyme, all four deoxyribonucleotide triphosphates, Mg(2+), and a DNA template. Incorporation occurs on native, alkali-denatured, and strictly double-stranded DNA. The in vitro synthesized pr...
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Deoxyribonucleic acid-dependent ribonucleic acid (RNA) polymerase (EC 2.7.7.6) was purified from the dimorphic bacterium Caulobacter crescentus at three stages in development. Enzyme from pure populations of stalked cells, as well as populations enriched in swarmer and predivisional cells, appeared identical in subunit structure and template requirements. The molecular weights of the enzyme sub...
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1. DNA polymerase from nuclear and supernatant fractions of cultured mouse L929 cells was fractionated on columns of Sephadex G-200, Sepharose 4B and of DEAEcellulose. Several peaks of activity are found on Sephadex chromatography and the distribution of activity between these depends on: (a) the source of the enzyme, i.e. nuclear or supernatant fraction; (b) the mode of extraction of the enzym...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1974
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)43005-6