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  • Title: Comparison of the RNA-dependent DNA polymerase of an endogenous avian leukosis virus to the polymerase of an exogenous avian leukosis virus.
    Author: Bauer G, Soo R, Friis RR.
    Journal: Eur J Biochem; 1978 Sep 15; 90(1):21-7. PubMed ID: 81774.
    Abstract:
    RNA-dependent DNA polymerases from Rous-associated virus-O and avian myeloblastosis virus were partially purified by affinity chromatography and compared to each other. The enzymes are indistinguishable in the immunoglobulin inhibition test and by several enzymological criteria, such as optimum curves for the concentrations of Mg2+, K+, H+; monophasic Lineweaver-Burk plot for dTTP and biphasic Lineweaver-Burk plot for dGTP. In thermal inactivation studies a small difference can be observed, suggesting a minor difference in the physical structures of the enzymes. Our findings are consistent with the idea that the RNA-dpendent DNA polymerases of endogenous and exogenous avian leukosis viruses are very closely related to each other and therefore may be regarded as one group of polymerases.
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