- PDB-6ve5: X-ray structure of human REV7 in complex with Shieldin3 (residues... -
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基本情報
登録情報
データベース: PDB / ID: 6ve5
タイトル
X-ray structure of human REV7 in complex with Shieldin3 (residues 41-74)
要素
Mitotic spindle assembly checkpoint protein MAD2B
Shieldin complex subunit 3
キーワード
PROTEIN BINDING / DNA damage response / DNA double-strand break repair / DNA end resection / homologous recombination / non-homologous end joining / Shieldin3 / SHLD3 / RINN1 / REV7 / 53BP1 / RIF1
機能・相同性
機能・相同性情報
somatic diversification of immunoglobulins involved in immune response / DNA damage response, signal transduction resulting in transcription / telomere maintenance in response to DNA damage / negative regulation of transcription regulatory region DNA binding / zeta DNA polymerase complex / positive regulation of isotype switching / positive regulation of extracellular matrix assembly / negative regulation of transcription by competitive promoter binding / negative regulation of cell-cell adhesion mediated by cadherin / JUN kinase binding ...somatic diversification of immunoglobulins involved in immune response / DNA damage response, signal transduction resulting in transcription / telomere maintenance in response to DNA damage / negative regulation of transcription regulatory region DNA binding / zeta DNA polymerase complex / positive regulation of isotype switching / positive regulation of extracellular matrix assembly / negative regulation of transcription by competitive promoter binding / negative regulation of cell-cell adhesion mediated by cadherin / JUN kinase binding / negative regulation of epithelial to mesenchymal transition / negative regulation of ubiquitin protein ligase activity / mitotic spindle assembly checkpoint signaling / positive regulation of double-strand break repair via nonhomologous end joining / negative regulation of double-strand break repair via homologous recombination / error-prone translesion synthesis / positive regulation of epithelial to mesenchymal transition / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / regulation of cell growth / actin filament organization / negative regulation of canonical Wnt signaling pathway / negative regulation of protein catabolic process / negative regulation of DNA-binding transcription factor activity / spindle / double-strand break repair / positive regulation of peptidyl-serine phosphorylation / chromosome / site of double-strand break / RNA polymerase II-specific DNA-binding transcription factor binding / cell division / DNA repair / chromatin / nucleolus / positive regulation of DNA-templated transcription / negative regulation of transcription by RNA polymerase II / nucleoplasm / nucleus / cytoplasm 類似検索 - 分子機能
Shieldin complex subunit 3 / Mad2-like / HORMA domain / HORMA domain / HORMA domain profile. / HORMA domain superfamily 類似検索 - ドメイン・相同性
National Institutes of Health/National Cancer Institute (NIH/NCI)
CA132878
米国
引用
ジャーナル: J Biol Chem / 年: 2021 タイトル: Cryo-EM reveals conformational flexibility in apo DNA polymerase ζ. 著者: Chloe Du Truong / Theodore A Craig / Gaofeng Cui / Maria Victoria Botuyan / Rachel A Serkasevich / Ka-Yi Chan / Georges Mer / Po-Lin Chiu / Rajiv Kumar / 要旨: The translesion synthesis (TLS) DNA polymerases Rev1 and Polζ function together in DNA lesion bypass during DNA replication, acting as nucleotide inserter and extender polymerases, respectively. ...The translesion synthesis (TLS) DNA polymerases Rev1 and Polζ function together in DNA lesion bypass during DNA replication, acting as nucleotide inserter and extender polymerases, respectively. While the structural characterization of the Saccharomyces cerevisiae Polζ in its DNA-bound state has illuminated how this enzyme synthesizes DNA, a mechanistic understanding of TLS also requires probing conformational changes associated with DNA- and Rev1 binding. Here, we used single-particle cryo-electron microscopy to determine the structure of the apo Polζ holoenzyme. We show that compared with its DNA-bound state, apo Polζ displays enhanced flexibility that correlates with concerted motions associated with expansion of the Polζ DNA-binding channel upon DNA binding. We also identified a lysine residue that obstructs the DNA-binding channel in apo Polζ, suggesting a gating mechanism. The Polζ subunit Rev7 is a hub protein that directly binds Rev1 and is a component of several other protein complexes such as the shieldin DNA double-strand break repair complex. We analyzed the molecular interactions of budding yeast Rev7 in the context of Polζ and those of human Rev7 in the context of shieldin using a crystal structure of Rev7 bound to a fragment of the shieldin-3 protein. Overall, our study provides new insights into Polζ mechanism of action and the manner in which Rev7 recognizes partner proteins.
温度: 288 K / 手法: 蒸気拡散法 / pH: 6.5 詳細: Protein complex was in 5 mM HEPES, pH 7.4, 100 mM NaCl, 5 mM DDT at 25 mg/mL;Reservoir solution was 0.1 M MES monohydrate, pH 6.5, 1.4 M MgSO4.6H20;Cryoprotection was done in 50% PEG 400