A Re-evaluation of the Structure of Narcissus Mosaic Virus and Polymers Made from its Protein

Abstract
The structure of narcissus mosaic virus (NMV) particles and its protein polymers were re-examined. The virus particle contains 44 coat protein subunits in 5 turns of its helix and has a MW of about 36 .times. 106. Its protein forms stacked discs or rings at pH 5 which, with time, are replaced by 2-start helices with 26 subunits in 3 turns or 9 in 1.