Abstract
The geminivirus capsid architecture is unique and built from twinned pseudo T=1 icosahedrons with 110 copies of the coat protein (CP). The CP is multifunctional. It performs various functions during the infection of a wide range of agriculturally important plant hosts. The CP multimerizes via pentameric intermediates during assembly and encapsulates the ssDNA genome to generate the unique capsid morphology. The virus capsid protects and transports the genome in the insect vector and plant host enroute to the plant nucleus for replication and the production of progeny. This review further explores CP:CP and CP:DNA interactions, and the environmental conditions that govern the assembly of the geminivirus capsid. This analysis was facilitated by new data available for the family, including three-dimensional structures and molecular biology data for several members. In addition, current and promising new control strategies of plant crop infection, which can lead to starvation for subsistence farmers, are discussed.
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