Purification of RNA-instructed DNA polymerase from human leukemic spleens.
نویسندگان
چکیده
منابع مشابه
Particles containing RNA-instructed DNA polymerase and virus-related RNA in human breast cancers.
Human breast cancers contain an RNA related to that of mouse mammary tumor virus. In 79% of the breast malignancies examined, this type of RNA is a 70S-component encapsulated with RNA-instructed DNA polymerase in a particle possessing the density characteristics of RNA tumor viruses. Further, the DNA synthesized by the human RNA enzyme complex hybridizes specifically with the RNA of mouse mamma...
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An experimental procedure is detailed that permits the detection of 70S RNA-directed DNA synthesis in mouse mammary carcinomas. The DNA synthesized is complementary to the RNA of the mouse mammary tumor virus by molecular hybridization, thus, completing the proof that an RNA-instructed DNA polymerase has been identified. Further, RNA-instructed DNA polymerase and its 70S RNA template are physic...
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We have purified and characterized a DNA-dependent RNA polymerase from the blue-green alga Fremyela dipsiphon. This enzyme, purified by gel filtration, DEAE-ceflulose chromatography, and glycerol gradient centrifugation, is comprised of five polypeptide subunits. Their masses are 161,000, 134,000, 91,000, 72,000, and 41,000 daltons. Preparative electrophoresis of the purified enzyme on nondenat...
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Burkitt's lymphomas, linked by previous studies with the DNA-containing Epstein-Barr virus, contain an RNA related in sequence to that of Rauscher leukemia virus. The present study establishes that the viral-related RNA found in Burkitt's tumors is a 70S component encapsulated with RNA-instructed DNA polymerase in a particle possessing a density characteristic of RNA tumor viruses. Further, the...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1975
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.72.10.4133