title: Finally, polyubiquitinated PCNA gets recognized.
abstract: Studies from Ciccia et al. (2012) and Yuan et al. (2012) in this issue of Molecular Cell, together with Weston et al. (2012), reveal that the translocase ZRANB3/AH2 can recognize K63-linked polyubiquitinated PCNA and plays an important role in restarting stalled replication forks.
authors.affiliation: Department of Chemical and Systems Biology, Stanford University, Stanford, CA 94305, USA.
authors.forename: Michelle K
authors.initials: MK
authors.lastname: Zeman
authors.forename: Karlene A
authors.initials: KA
authors.lastname: Cimprich