6GVU

NMR structure of the DNA-bound helix bundle domain from the functional pRN1 primase

6GVU の概要

• エントリーDOI: 10.2210/pdb6gvu/pdb
• NMR情報: BMRB: 34291
• 分子名称: DNA (5'-D(*CP*TP*GP*TP*GP*CP*TP*CP*A)-3'), functional pRN1 primase (2 entities in total)
• 機能のキーワード: primase, single-stranded dna, replication initiation, dna binding protein
• 由来する生物種: Sulfolobus islandicus; 詳細
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 16235.52

構造登録者

Boudet, J.,Lipps, G.,Allain, F.H.-T. (登録日: 2018-06-21, 公開日: 2018-12-26, 最終更新日: 2024-11-06)

主引用文献

Boudet, J.,Devillier, J.C.,Wiegand, T.,Salmon, L.,Meier, B.H.,Lipps, G.,Allain, F.H.
A Small Helical Bundle Prepares Primer Synthesis by Binding Two Nucleotides that Enhance Sequence-Specific Recognition of the DNA Template.
Cell, 176:154-166.e13, 2019

PubMed Abstract: Primases have a fundamental role in DNA replication. They synthesize a primer that is then extended by DNA polymerases. Archaeoeukaryotic primases require for synthesis a catalytic and an accessory domain, the exact contribution of the latter being unresolved. For the pRN1 archaeal primase, this domain is a 115-amino acid helix bundle domain (HBD). Our structural investigations of this small HBD by liquid- and solid-state nuclear magnetic resonance (NMR) revealed that only the HBD binds the DNA template. DNA binding becomes sequence-specific after a major allosteric change in the HBD, triggered by the binding of two nucleotide triphosphates. The spatial proximity of the two nucleotides and the DNA template in the quaternary structure of the HBD strongly suggests that this small domain brings together the substrates to prepare the first catalytic step of primer synthesis. This efficient mechanism is likely general for all archaeoeukaryotic primases.

PubMed: 30595448
DOI: 10.1016/j.cell.2018.11.031

実験手法

SOLUTION NMR