Abstract

Several small, spherical plant viruses undergo conformational changes (swell) under conditions that deprotonate carboxyl groups and/or remove divalent cations. In this study, swollen, ribonuclease A susceptible turnip crinkle carmovirus (TCV) and tomato bushy stunt tombusvirus (TBSV) particles migrated more slowly than contracted virions during agarose gel electrophoresis, and swollen TCV virions stained more intensely with ethidium bromide than did contracted virions (...)

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