Binding modes of the initiator and inhibitor forms of the replication protein pi to the gamma ori iteron of plasmid R6K.

Abstract excerpt

Discerning the interactions between initiator protein and the origin of replication should provide insights into the mechanism of DNA replication initiation. In the gamma origin of plasmid R6K, the Rep protein, pi, is distinctive in that it can bind the seven 22-bp iterons in two forms; pi monomers activate replication, whereas pi dimers act as inhibitors. In this work, we used wild type and variants of the pi...

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