Cauliflower Mosaic Virus: an Improved Purification Procedure and Some Properties of the Virus Particles

Abstract
A new procedure for the purification of cauliflower mosaic virus (CaMV) which involves the use of Triton X-100 and urea results in higher and more reliable yields. CaMV particles are 208S, have a diffusion coefficient of 0.75 .times. 10-7 cm2/s, contain 17% nucleic acid and have a MW of 22.8 .times. 106. Virus precipitated by Mg2+, low pH or ethanol at moderate salt concentrations, or by polyethylene glycol, is not easily resuspended.