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. 2021 Jan 22;118(4):e2011577118. doi: 10.1073/pnas.2011577118

Fig. 7.

Fig. 7.

Proposed mechanism underlying how PrpT/PrpA controls plasmid replication. When PrpA is stable, it binds to the iterons in the ori, interfering with the binding of RepB to the ori, thus preventing overreplication of the plasmid. During stress, PrpA is degraded, thus derepressing the inhibition of the binding of RepB to ori.