Loss of Pol32 in Drosophila melanogaster causes chromosome instability and suppresses variegation

Patrizia Tritto, Valeria Palumbo, Lucia Micale, Marco Marzulli, Maria Pia Bozzetti, Valeria Specchia, Gioacchino Palumbo, Sergio Pimpinelli, Maria Berloco

Research output: Contribution to journalArticle

Abstract

Pol32 is an accessory subunit of the replicative DNA Polymerase δ and of the translesion Polymerase ζ. Pol32 is involved in DNA replication, recombination and repair. Pol32' s participation in high- and low-fidelity processes, together with the phenotypes arising from its disruption, imply multiple roles for this subunit within eukaryotic cells, not all of which have been fully elucidated. Using pol32 null mutants and two partial loss-of-function alleles pol32rd1 and pol32rds in Drosophila melanogaster, we show that Pol32 plays an essential role in promoting genome stability. Pol32 is essential to ensure DNA replication in early embryogenesis and it participates in the repair of mitotic chromosome breakage. In addition we found that pol32 mutantssuppress position effect variegation, suggesting a role for Pol32 in chromatin architecture.

Original languageEnglish
Article numbere0120859
JournalPLoS One
Volume10
Issue number3
DOIs
Publication statusPublished - Mar 31 2015

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

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    Tritto, P., Palumbo, V., Micale, L., Marzulli, M., Bozzetti, M. P., Specchia, V., Palumbo, G., Pimpinelli, S., & Berloco, M. (2015). Loss of Pol32 in Drosophila melanogaster causes chromosome instability and suppresses variegation. PLoS One, 10(3), [e0120859]. https://doi.org/10.1371/journal.pone.0120859