title: The characteristics of the RNA-dependent DNA polymerase of baboon endogenous virus.
abstract: The characteristics of the virion-associated RNA-dependent DNA polymerase (RDPase) of a baboon endogenous virus, M7, were studied extensively; the optimal conditions  for the exogenous RDPase reaction were obtained with 0.4 mM-Mn2+, 110 mM-NaCl, 24 microgram/ml poly(rA). oligo(dT)12-18, at pH 7.6 in the presence of 0.01 % Brij-58. Under these conditions, the incorporation of 3H-TMP proceeded up to 90 min at a speed of 0.1 pmol TMP/microgram virus protein/min. Poly(rC). oligo (dG)12-18 and poly(rCm). oligo (dG)12-18 served as the template-primers in the exogenous reaction with 3 mM-Mg2+ and 0.4 mM-Mn2+, respectively. Polyuridylic acid, bleomycin, rifampicin, spermidine and inorganic phosphate significantly inhibited the RDPase activity of BaEV. The RDPase of BaEV requires a higher concentration of NaCl, a lower pH and milder conditions of detergent treatment than those of other mammalian retroviruses.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D000882:Haplorhini; D006863:Hydrogen-Ion Concentration; D010215:Papio / Q000382:microbiology*; D012194:RNA-Directed DNA Polymerase / Q000032:analysis* / Q000378:metabolism; D012190:Retroviridae / Q000032:analysis*; D018894:Reverse Transcriptase Inhibitors; D013698:Templates, Genetic
chemical_list: D018894:Reverse Transcriptase Inhibitors; D012194:RNA-Directed DNA Polymerase