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Studies of the Protein and Nucleic Acid Components of Nudaurelia capensis Virus

Department of Botany and Microbiology, Rhodes University, Grahamstown, South Africa

We have studied some properties of Nudaurelia capensis virus, a non-occluded isometric RNA virus isolated from the infected larvae of the Pine Emperor moth, Nudaurelia cytherea capensis (Lepidoptera: Saturniidae). The virus was degraded by treatment with formic acid, and the mol. wt. of the coat protein was estimated by polyacrylamide gel electrophoresis to be between 60000 and 62000. The virus contains 11% single-stranded RNA with a nucleotide composition of 28% guanylic acid, 23% uridylic acid, 25% cytidylic acid, and 24% adenylic acid. The cryptogram of the virus is R/1; 1.8/11; S/S; I/O.

Received 14 August 1973; accepted 30 October 1973.