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J Virol. 1980 May; 34(2): 360-365

Comparison of the Structure of C- and N-Polyhedrins from Two Occluded Viruses Pathogenic for Orgyia pseudotsugata

¹ Department of Agricultural Chemistry, Oregon State University, Corvallis, Oregon 97331
² Department of Biochemistry and Biophysics, Oregon State University, Corvallis, Oregon 97331

ABSTRACT

C-and N-polyhedrins from a cytoplasmic polyhedrosis virus (a double-stranded RNA virus) and a nuclear polyhedrosis virus (a DNA virus), respectively, of Orgyia pseudotsugata were compared. Although both polyhedrins appear to stabilize their respective virions and have similar molecular weights, they differed in amino acid composition, tryptic peptide elution profiles from a cation-exchange resin, and N-terminal amino acid sequence and showed no antigenic relatedness. This suggests that these two proteins originated independently of one another.

Oregon Agricultural Experiment Station technical paper no. 5353.