2NRV

Crystal structure of the C-terminal half of UvrC

2NRV の概要

• エントリーDOI: 10.2210/pdb2nrv/pdb
• 関連するPDBエントリー: 1YCZ 2NRR 2NRT 2NRW 2NRX 2NRZ
• 分子名称: UvrABC system protein C, SODIUM ION (3 entities in total)
• 機能のキーワード: uvrc, rnase h, endonuclase, helix hairpin helix, uvrabc, ner, hydrolase
• 由来する生物種: Thermotoga maritima
• 細胞内の位置: Cytoplasm : Q9WYA3
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 50795.80

構造登録者

Karakas, E.,Truglio, J.J.,Kisker, C. (登録日: 2006-11-02, 公開日: 2007-02-06, 最終更新日: 2023-08-30)

主引用文献

Karakas, E.,Truglio, J.J.,Croteau, D.,Rhau, B.,Wang, L.,Van Houten, B.,Kisker, C.
Structure of the C-terminal half of UvrC reveals an RNase H endonuclease domain with an Argonaute-like catalytic triad.
Embo J., 26:613-622, 2007

PubMed Abstract: Removal and repair of DNA damage by the nucleotide excision repair pathway requires two sequential incision reactions, which are achieved by the endonuclease UvrC in eubacteria. Here, we describe the crystal structure of the C-terminal half of UvrC, which contains the catalytic domain responsible for 5' incision and a helix-hairpin-helix-domain that is implicated in DNA binding. Surprisingly, the 5' catalytic domain shares structural homology with RNase H despite the lack of sequence homology and contains an uncommon DDH triad. The structure also reveals two highly conserved patches on the surface of the protein, which are not related to the active site. Mutations of residues in one of these patches led to the inability of the enzyme to bind DNA and severely compromised both incision reactions. Based on our results, we suggest a model of how UvrC forms a productive protein-DNA complex to excise the damage from DNA.

PubMed: 17245438
DOI: 10.1038/sj.emboj.7601497

実験手法

X-RAY DIFFRACTION (1.8 Å)