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  • Title: Reverse transcriptase from simian foamy virus serotype 1: purification and characterization.
    Author: Benzair AB, Rhodes-Feuillette A, Emanoïl-Ravicovitch R, Peries J.
    Journal: J Virol; 1982 Nov; 44(2):720-4. PubMed ID: 6183451.
    Abstract:
    Chromatography on heparin-Sepharose, known for its affinity for nucleotide-binding polypeptides, was used to purify the viral RNA-dependent DNA polymerase (reverse transcriptase) from the core polypeptides of simian foamy virus type 1. This procedure allowed the recovery of highly purified enzyme with a high specific activity. The average molecular weight of this monomeric enzyme is 81,000 and is thus comparable to that found for other known primate retroviruses. Reverse transcriptase activity of simian foamy virus type 1 requires a ribonucleotide template as a primer or otherwise a DNA with 3'-OH ends. Other optimal conditions of activity are reviewed. Heat inactivation studies led to the concept of an enzyme with two loci, one specific for the substrate and the other for the template-primer.
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