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  • Journal Article

  • Flexibility and distributive synthesis regulate RNA priming and handoff in human DNA polymerase α-primase

    • Authors : Cordoba, John J (2023)

  • In eukaryotes, DNA polymerase α-primase (pol-prim) initiates DNA synthesis during replication, generating the first ~30 nucleotides of nascent strands.1–5 Pol-prim is unique among replicative polymerases in its ability to perform de novo synthesis from a single-stranded DNA template; the primers it creates are required for further synthesis by the processive polymerases ε and δ that perform the bulk of nascent strand synthesis6,7. Pol-prim plays a particularly...
  • Journal Article

  • DTX3L and USP28 fine-tune DNA double strand repair through mutual regulation of their protein levels

    • Authors : Ashok, Yashwanth (2023)

  • The DNA damage response involves a complex protein network with members mediating different post-translational modifications such as ubiquitination and deubiquitination. Thereby the E3 ubiquitin ligase DTX3L as well as the deubiquitinase USP28 are recruited especially to DNA double strand breaks (DSBs) suggesting mutual functional interactions. Here we present evidence for the existence of such crosstalk. Mechanistically we show that DTX3L interacts with USP28 and ubiq...