Comparative properties of the inclusion body proteins of the nucleopolyhedrosis viruses ofNeodiprion sertifer andLymantria dispar

Abstract
A comparison was made on the properties of the inclusion body proteins of two insect viruses: the nucleopolyhedrosis viruses of the European pine sawfly,Neodiprion sertifer, Geoffroy, and the gypsy moth,Lymantria dispar, Linnaeus. The inclusion body proteins were characterized by the following parameters: amino acid composition, polyacrylamide gel electrophoresis in the absence and presence of sodium dodecyl sulfate—mercaptoethanol, isoelectric focusing, and alkaline protease activity. The properties of the inclusion body proteins of the two viruses were similar in many respects, but clear differences were observed. A principal difference was the absence of alkaline protease activity associated with the inclusion body proteins ofN. sertifer nucleopolyhedrosis virus.

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