the rxl motif of the african cassava mosaic virus rep protein is necessary for rereplication of yeast dna and viral infection in plants.geminiviruses, single-stranded dna plant viruses, encode a replication-initiator protein (rep) that is indispensable for virus replication. a potential cyclin interaction motif (rxl) in the sequence of african cassava mosaic virus rep may be an alternative link to cell cycle controls to the known interaction with plant homologs of retinoblastoma protein (prbr). mutation of this motif abrogated rereplication in fission yeast induced by expression of wildtype rep suggesting that rep interacts via ...201424999043
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