1887

Abstract

SUMMARY

Nucleoprotein preparations of tobacco rattle virus (TRV) strain SYM contain particles of four modal lengths. Particles of length 188 nm and 101 nm contain RNA-1 and RNA-2 respectively. Those of length 57 nm and 48 nm contain RNA molecules that are not required for infectivity but include specific sequences derived from both RNA-1 and RNA-2. No products attributable to translation of RNA-2 were obtained in reticulocyte lysates, whereas RNA-2 of other TRV strains serves as messenger RNA for virus coat protein. In strain SYM, one of the smaller RNA species, RNA-3 (mol. wt. 0.6 × 10, 1750 nucleotides), was translated to give coat protein, and is apparently a subgenomic messenger RNA derived from RNA-2. The other small RNA species, RNA-4 (mol. wt. 0.54 × 10, 1550 nucleotides), was translated into a polypeptide of apparent mol. wt. 29000, unrelated to coat protein. It is suggested that RNA-4 is a subgenomic messenger RNA derived from RNA-1.

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/content/journal/jgv/10.1099/0022-1317-64-7-1591
1983-07-01
2024-12-04
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