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  • Title: Characterisation of cauliflower mosaic virus DNA forms isolated from infected turnip leaves.
    Author: Hull R, Covey SN.
    Journal: Nucleic Acids Res; 1983 Mar 25; 11(6):1881-95. PubMed ID: 6300783.
    Abstract:
    Several different forms of cauliflower mosaic virus (CaMV) DNA were detected in nucleic acid preparations from CaMV-infected turnip leaves. As well as supercoiled and open-circular molecules, various linear DNA structures were identified. The relative amounts of these DNA forms varied in plants infected with different CaMV isolates. Restriction enzyme mapping and one- and two-dimensional gel electrophoresis revealed the presence of linear molecules apparently formed by breaks in the second strand at each of the three discontinuities. Two major linear DNA forms are double-stranded over part of their length and appear to have single-stranded extensions of the -strand of variable length. Since these DNA forms are not produced during extraction and probably exist as unencapsidated or partially encapsidated molecules, they may represent intermediates either in DNA replication or in virion assembly.
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