A viral movement protein as a nuclear shuttle. The geminivirus BR1 movement protein contains domains essential for interaction with BL1 and nuclear localization.

Abstract excerpt

For the nuclear replicating bipartite geminiviruses such as squash leaf curl to systemically infect the host requires the active participation of two virus-encoded movement proteins, BR1 and BL1. These act in a cooperative manner to transport the viral single-stranded DNA genome from its site of replication in the nucleus to the cell periphery (A.A. Sanderfoot, S.G. Lazarowitz [1995] Plant Cell 7: 1185-1194). We...

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