9F26

Crystal structure of the PriS_PriL-Rpa2WH ternary complex from P. abyssi

9F26 の概要

• エントリーDOI: 10.2210/pdb9f26/pdb
• 分子名称: DNA primase small subunit PriS, DNA primase large subunit PriL, RPA32 subunit of the hetero-oligomeric complex involved in homologous recombination, ... (4 entities in total)
• 機能のキーワード: replication protein a, ssdna-binding protein, dna binding protein
• 由来する生物種: Pyrococcus abyssi; 詳細
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 118151.30

構造登録者

Madru, C.,Legrand, P.,Haouz, A.,Sauguet, L. (登録日: 2024-04-22, 公開日: 2024-12-04, 最終更新日: 2025-01-22)

主引用文献

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.
Communication between DNA polymerases and Replication Protein A within the archaeal replisome.
Nat Commun, 15:10926-10926, 2024

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.

PubMed: 39738083
DOI: 10.1038/s41467-024-55365-w

実験手法

X-RAY DIFFRACTION (3.501 Å)