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In vitro Aggregation of Alliaria Mosaic Virus Protein

Laboratorio di Fitovirologia Applicata del C.N.R., Via O. Vigliani 104 10135 Torino, Italy

Paola Michelin-Lausarot

Laboratorio di Biochimica Istituto Chimico dell 'Università Corso Massimo d'Azeglio 48 10125 Torino, Italy.

Alliaria mosaic virus (AIMV), a possible member of the PVY group, easily undergoes a partial disruption during the last stages of purification or upon standing of purified virus preparations. Protein dissociation from the virus particles usually gives random aggregates and can, in some cases, organize itself into helical structures. Two main kinds of helical structures have been observed in electron micrographs of purified virus suspensions: single and double helices. Both helical structures have a diam. of 28 nm and a pitch of 70 nm.

Received 16 July 1973; accepted 2 October 1973.