Download MendeleyCommunication between DNA polymerases and Replication Protein A within the archaeal replisome.
Martinez-Carranza, M., Vialle, L., Madru, C., Cordier, F., Tekpinar, A.D., Haouz, A., Legrand, P., Le Meur, R.A., England, P., Dulermo, R., Guijarro, J.I., Henneke, G., Sauguet, L.(2024) Nat Commun 15: 10926-10926
- PubMed: 39738083
- DOI: https://doi.org/10.1038/s41467-024-55365-w
- Primary Citation of Related Structures:
9F26, 9F27, 9F28, 9F29, 9F2A - PubMed Abstract:
Replication Protein A (RPA) plays a pivotal role in DNA replication by coating and protecting exposed single-stranded DNA, and acting as a molecular hub that recruits additional replication factors. We demonstrate that archaeal RPA hosts a winged-helix domain (WH) that interacts with two key actors of the replisome: the DNA primase (PriSL) and the replicative DNA polymerase (PolD). Using an integrative structural biology approach, combining nuclear magnetic resonance, X-ray crystallography and cryo-electron microscopy, we unveil how RPA interacts with PriSL and PolD through two distinct surfaces of the WH domain: an evolutionarily conserved interface and a novel binding site. Finally, RPA is shown to stimulate the activity of PriSL in a WH-dependent manner. This study provides a molecular understanding of the WH-mediated regulatory activity in central replication factors such as RPA, which regulate genome maintenance in Archaea and Eukaryotes.
- Architecture and Dynamics of Biological Macromolecules, Institut Pasteur, Université Paris Cité, CNRS UMR 3528, Paris, France.
Organizational Affiliation:
