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Model for completing replication. (A, i–vi) Replication forks continue past their meeting point, creating a palindromic substrate. (A, vi) SbcCD-ExoI cleave and process the overreplicated intermediate. (A, vii) RecBCD-mediated resection and joining of the DNA ends completes replication. (B) In vitro and proposed in vivo substrates for SbcCD, respectively.
