Evidence for a Ring Structure of Polyoma Virus DNA
The DNA of polyoma (PY) virus has two interesting features: it is unusually resistant to heat or formamide denaturation,1 and it has two distinct components, of sedimentation coefficient 14 and 21, respectively.2 A two-component sedimentation was formerly shown to be a characteristic of the DNA of papilloma virus,3 which is considered a member of the same group of viruses.
KeywordsSedimentation Velocity Frontal Part Linear Molecule Polyoma Virus Ring Molecule
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