4XR3:
reference: Replisome speed determines the efficiency of the Tus-Ter replication termination barrier., Elshenawy MM, Jergic S, Xu ZQ, Sobhy MA, Takahashi M, Oakley AJ, Dixon NE, Hamdan SM, Nature. 2015 Sep 17;525(7569):394-8. doi: 10.1038/nature14866. Epub 2015 Aug 31. PMID: 26322585

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