1B8H

SLIDING CLAMP, DNA POLYMERASE

1B8H の概要

• エントリーDOI: 10.2210/pdb1b8h/pdb
• 分子名称: DNA POLYMERASE PROCESSIVITY COMPONENT, DNA POLYMERASE fragment (2 entities in total)
• 機能のキーワード: sliding clamp, gp45, replisome, accessory protein, transferase
• 由来する生物種: Enterobacteria phage RB69; 詳細
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 76751.01

構造登録者

Shamoo, Y.,Steitz, T.A. (登録日: 1999-02-01, 公開日: 1999-02-09, 最終更新日: 2023-08-09)

主引用文献

Shamoo, Y.,Steitz, T.A.
Building a replisome from interacting pieces: sliding clamp complexed to a peptide from DNA polymerase and a polymerase editing complex.
Cell(Cambridge,Mass.), 99:155-166, 1999

PubMed Abstract: We have solved the crystal structures of the bacteriophage RB69 sliding clamp, its complex with a peptide essential for DNA polymerase interactions, and the DNA polymerase complexed with primer-template DNA. The editing complex structure shows a partially melted duplex DNA exiting from the exonuclease domain at an unexpected angle and significant changes in the protein structure. The clamp complex shows the C-terminal 11 residues of polymerase bound in a hydrophobic pocket, and it allows docking of the editing and clamp structures together. The peptide binds to the sliding clamp at a position identical to that of a replication inhibitor peptide bound to PCNA, suggesting that the replication inhibitor protein p21CIP1 functions by competing with eukaryotic polymerases for the same binding pocket on the clamp.

PubMed: 10535734
DOI: 10.1016/S0092-8674(00)81647-5

実験手法

X-RAY DIFFRACTION (3 Å)