Abstract
A method for isolating covalently closed circular double-stranded DNA from plants infected with the geminivirus, tomato golden mosaic virus, is described. Ethidium bromide titration showed this DNA to be negatively supercoiled with a superhelical density of - 0.062. The presence of S1 nuclease-sensitive secondary structure in the supercoiled DNA was demonstrated by its conversion to the open circular and linear DNA forms on treatment with this enzyme
Original language | English |
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Pages (from-to) | 747-752 |
Number of pages | 6 |
Journal | Biochemical and Biophysical Research Communications |
Volume | 118 |
Issue number | 3 |
DOIs | |
Publication status | Published - 14 Feb 1984 |