Abstract
The proteins synthesized in protoplasts infected with strain V5 of brome mosaic virus have been studied. Four new proteins of mol.wt. 2, 3.5, 10 and 10.7 x 104 were observed. These account for over 90% of the virus genome. The three proteins with lowest mol.wt. corresponded closely in size to those observed in protoplasts infected with cowpea chlorotic mottle virus.
* Present address: Institute for Plant Virus Research, Ministry of Agriculture and Forestry, Tsukuba Science City, Yatabe, Ibaraki 300-21, Japan.