RNA and protein components of maize streak and cassava latent viruses

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Abstract
Polyacrylamide gel electrophoresis indicated that maize streak (MSV) and cassava latent (CLV) viruses each contain 1 species of protein and 2 of RNA. The estimated protein MW is 28,000 for MSV and 34,000 for CLV. The MW obtained for the 2 RNA species using formamide-containing gels were the same for the 2 viruses: 1.7 .times. 106 and 1.3 .times. 106. The viruses probably have a 2-part genome and the tendency of their nucleoprotein particles to form pairs favors the delivery of complete genomes to sites of infection.