Some Properties of Isometric Virus Particles which Contain the Satellite RNA of Tobacco Mosaic Virus

SUMMARY A ssRNA, which has a satellite-like relationship with tobacco mosaic virus (TMV), had an estimated mol. wt. of 0·38 × 106 and was found to be encapsidated in isometric particles with a diameter of 17 nm. The capsid protein had a mol. wt. of 18 × 103. This satellite virus of TMV (STMV) is highly immunogenic and no serological relatedness was detected between it and either TMV or satellite tobacco necrosis virus (STNV) or satellite panicum...