title: In vivo analysis of the cell cycle dependent association of the bovine papillomavirus E2 protein and ChlR1.
abstract: It has been shown that the genomes of episomally maintained DNA viruses are tethered to host cell chromosomes during cell division, facilitating maintenance in dividing cells. The papillomavirus E2 protein serves this mechanism of viral genome persistence by simultaneously associating with chromatin and the viral genome during mitosis. Several host cell proteins are reported to be necessary for the association of E2 with chromatin including the cohesion establishment factor ChlR1. Here we use fluorescence resonance energy transfer (FRET) technology to confirm the interaction between BPV-1 E2 and ChlR1. Furthermore, we use synchronised live cells to study the temporal nature of this dynamic protein interaction and show that ChlR1 and E2 interact during specific phases of the cell cycle. These data provide evidence that the association of E2 with ChlR1 contributes to a loading mechanism during DNA replication rather than direct tethering during mitotic division.
authors.affiliation: School of Medicine, University of St Andrews, Medical and Biological Sciences Building, North Haugh, St Andrews, Fife, KY16 9TF, UK.
authors.forename: Katherine M
authors.initials: KM
authors.lastname: Feeney
authors.forename: Anastasia
authors.initials: A
authors.lastname: Saade
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Okrasa
authors.forename: Joanna L
authors.initials: JL
authors.lastname: Parish
mesh_terms: D052688:Bovine papillomavirus 1 / Q000502:physiology*; D002460:Cell Line; D053487:DEAD-box RNA Helicases / Q000378:metabolism*; D004268:DNA-Binding Proteins / Q000378:metabolism*; D031541:Fluorescence Resonance Energy Transfer; D006801:Humans; D011485:Protein Binding; D025941:Protein Interaction Mapping; D014764:Viral Proteins / Q000378:metabolism*
chemical_list: D004268:DNA-Binding Proteins; C051550:E2 protein, Bovine papillomavirus; D014764:Viral Proteins; D053487:DEAD-box RNA Helicases