- EMDB-13255: The structure of E. coli MutL bound to a 3' resected DNA end -
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基本情報
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データベース: EMDB / ID: EMD-13255
タイトル
The structure of E. coli MutL bound to a 3' resected DNA end
マップデータ
試料
複合体: E. coli MutL N-terminal dimer bound to a 3' resected DNA end
複合体: 3' resected DNA end
DNA: Template strand
DNA: Primer strand
複合体: E. coli MutL N-terminal dimer
タンパク質・ペプチド: DNA mismatch repair protein MutL
リガンド: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
リガンド: MAGNESIUM ION
キーワード
DNA mismatch repair / Protein-DNA complex / DNA BINDING PROTEIN
機能・相同性
機能・相同性情報
single-stranded DNA-dependent ATP-dependent DNA helicase complex / mismatch repair involved in maintenance of fidelity involved in DNA-dependent DNA replication / mismatch repair complex / regulation of DNA recombination / mismatched DNA binding / ATP-dependent DNA damage sensor activity / mismatch repair / ATP hydrolysis activity / DNA binding / ATP binding / identical protein binding 類似検索 - 分子機能
DNA mismatch repair protein, MutL / MutL, C-terminal domain, regulatory subdomain / MutL C terminal dimerisation domain / MutL, C-terminal, dimerisation / MutL, C-terminal domain superfamily / MutL, C-terminal domain, dimerisation subdomain / MutL C terminal dimerisation domain / DNA mismatch repair protein family, N-terminal / DNA mismatch repair protein, S5 domain 2-like / DNA mismatch repair, conserved site ...DNA mismatch repair protein, MutL / MutL, C-terminal domain, regulatory subdomain / MutL C terminal dimerisation domain / MutL, C-terminal, dimerisation / MutL, C-terminal domain superfamily / MutL, C-terminal domain, dimerisation subdomain / MutL C terminal dimerisation domain / DNA mismatch repair protein family, N-terminal / DNA mismatch repair protein, S5 domain 2-like / DNA mismatch repair, conserved site / DNA mismatch repair protein MutL/Mlh/Pms / DNA mismatch repair protein, C-terminal domain / DNA mismatch repair proteins mutL / hexB / PMS1 signature. / DNA mismatch repair protein, C-terminal domain / Histidine kinase-, DNA gyrase B-, and HSP90-like ATPase / Histidine kinase/HSP90-like ATPase superfamily / Ribosomal protein S5 domain 2-type fold, subgroup / Ribosomal protein S5 domain 2-type fold 類似検索 - ドメイン・相同性
ジャーナル: Nucleic Acids Res / 年: 2022 タイトル: MutL binds to 3' resected DNA ends and blocks DNA polymerase access. 著者: Alessandro Borsellini / Joyce H G Lebbink / Meindert H Lamers / 要旨: DNA mismatch repair removes mis-incorporated bases after DNA replication and reduces the error rate a 100-1000-fold. After recognition of a mismatch, a large section of up to a thousand nucleotides ...DNA mismatch repair removes mis-incorporated bases after DNA replication and reduces the error rate a 100-1000-fold. After recognition of a mismatch, a large section of up to a thousand nucleotides is removed from the daughter strand followed by re-synthesis. How these opposite activities are coordinated is poorly understood. Here we show that the Escherichia coli MutL protein binds to the 3' end of the resected strand and blocks access of Pol I and Pol III. The cryo-EM structure of an 85-kDa MutL-DNA complex, determined to 3.7 Å resolution, reveals a unique DNA binding mode that positions MutL at the 3' end of a primer-template, but not at a 5' resected DNA end or a blunt DNA end. Hence, our work reveals a novel role for MutL in the final stages of mismatch repair by preventing premature DNA synthesis during removal of the mismatched strand.