COMPARISON OF BASE COMPOSITIONS OF RNA FROM VARIOUS RNA PHAGES

概要

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Six coliphages containing RNA, MS2, MY, GA, SD, Qβ and VK, were purified and base ratios of their RNA were determined by paper chromatography. RNA from these RNA phages contained uracil in mole percent, 24.1, 24.6, 27.8, 28.1, 29.3, and 29.3 for MS2, MY, GA, SD, Qβ and VK, respectively. The ratios, A/U and A+C/G+U were 0.98, 1.00 for MS2; 0.95, 0.97 for MY; 0.86, 0.94 for GA; 0.84, 0.92 for SD; 0.79, 0.87 for Qβ, and 0.78, 0.88 for VK.From these results, it was shown that these six RNA phages were separated in three distinct groups (MS2, MY: GA, SD: Qβ, VK). These results were in good accordance with groupings by a serological method and a Millipore filtration method. These facts suggest that RNA from the phages of these three groups were characteristic to each group.
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