- EMDB-16859: Structure of BARD1 ARD-BRCTs in complex with H2AKc15ub nucleosome... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-16859
タイトル
Structure of BARD1 ARD-BRCTs in complex with H2AKc15ub nucleosomes (Map1)
マップデータ
試料
複合体: BARD1 ARD-BRCTs in complex with H2AKc15ub nucleosomes
複合体: DNA, Histones and Polyubiquitin-B
DNA: DNA (142-MER)
タンパク質・ペプチド: Histone H3.1
タンパク質・ペプチド: Histone H2B type 1-C/E/F/G/I
タンパク質・ペプチド: Histone H2A type 1
タンパク質・ペプチド: Histone H4
タンパク質・ペプチド: Ubiquitin
複合体: BRCA1 associated RING domain 1
タンパク質・ペプチド: BRCA1 associated RING domain 1
キーワード
BRCA1-BARD1 / chromatin recognition / nucleosomes / ubiquitin / DNA BINDING PROTEIN
機能・相同性
機能・相同性情報
BRCA1-BARD1 complex / BRCA1-C complex / BRCA1-B complex / BRCA1-A complex / protein K6-linked ubiquitination / negative regulation of protein export from nucleus / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus ...BRCA1-BARD1 complex / BRCA1-C complex / BRCA1-B complex / BRCA1-A complex / protein K6-linked ubiquitination / negative regulation of protein export from nucleus / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / Deposition of new CENPA-containing nucleosomes at the centromere / FLT3 signaling by CBL mutants / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / telomere organization / TICAM1-dependent activation of IRF3/IRF7 / Regulation of FZD by ubiquitination / Meiotic synapsis / APC/C:Cdc20 mediated degradation of Cyclin B / Inhibition of DNA recombination at telomere / Downregulation of ERBB4 signaling / Interleukin-7 signaling / p75NTR recruits signalling complexes / RNA Polymerase I Promoter Opening / APC-Cdc20 mediated degradation of Nek2A / Regulation of innate immune responses to cytosolic DNA / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling / Assembly of the ORC complex at the origin of replication / Pexophagy / NRIF signals cell death from the nucleus / VLDLR internalisation and degradation / Regulation of PTEN localization / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / Activated NOTCH1 Transmits Signal to the Nucleus / SUMOylation of chromatin organization proteins / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of BACH1 activity / DNA methylation / TICAM1, RIP1-mediated IKK complex recruitment / MAP3K8 (TPL2)-dependent MAPK1/3 activation / Translesion synthesis by REV1 / Condensation of Prophase Chromosomes / Translesion synthesis by POLK / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Downregulation of TGF-beta receptor signaling / InlB-mediated entry of Listeria monocytogenes into host cell / Regulation of activated PAK-2p34 by proteasome mediated degradation / Josephin domain DUBs / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / Translesion synthesis by POLI / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / SIRT1 negatively regulates rRNA expression / IKK complex recruitment mediated by RIP1 / Gap-filling DNA repair synthesis and ligation in GG-NER / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / innate immune response in mucosa / PINK1-PRKN Mediated Mitophagy / PRC2 methylates histones and DNA / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / epigenetic regulation of gene expression / TNFR1-induced NF-kappa-B signaling pathway / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Regulation of endogenous retroelements by KRAB-ZFP proteins / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Defective pyroptosis / TCF dependent signaling in response to WNT / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 類似検索 - 分子機能
ジャーナル: Nucleic Acids Res / 年: 2023 タイトル: BRCA1-BARD1 combines multiple chromatin recognition modules to bridge nascent nucleosomes. 著者: Hayden Burdett / Martina Foglizzo / Laura J Musgrove / Dhananjay Kumar / Gillian Clifford / Lisa J Campbell / George R Heath / Elton Zeqiraj / Marcus D Wilson / 要旨: Chromatin association of the BRCA1-BARD1 heterodimer is critical to promote homologous recombination repair of DNA double-strand breaks (DSBs) in S/G2. How the BRCA1-BARD1 complex interacts with ...Chromatin association of the BRCA1-BARD1 heterodimer is critical to promote homologous recombination repair of DNA double-strand breaks (DSBs) in S/G2. How the BRCA1-BARD1 complex interacts with chromatin that contains both damage induced histone H2A ubiquitin and inhibitory H4K20 methylation is not fully understood. We characterised BRCA1-BARD1 binding and enzymatic activity to an array of mono- and di-nucleosome substrates using biochemical, structural and single molecule imaging approaches. We found that the BRCA1-BARD1 complex preferentially interacts and modifies di-nucleosomes over mono-nucleosomes, allowing integration of H2A Lys-15 ubiquitylation signals with other chromatin modifications and features. Using high speed- atomic force microscopy (HS-AFM) to monitor how the BRCA1-BARD1 complex recognises chromatin in real time, we saw a highly dynamic complex that bridges two nucleosomes and associates with the DNA linker region. Bridging is aided by multivalent cross-nucleosome interactions that enhance BRCA1-BARD1 E3 ubiquitin ligase catalytic activity. Multivalent interactions across nucleosomes explain how BRCA1-BARD1 can recognise chromatin that retains partial di-methylation at H4 Lys-20 (H4K20me2), a parental histone mark that blocks BRCA1-BARD1 interaction with nucleosomes, to promote its enzymatic and DNA repair activities.
モデル: Quantifoil R3.5/1 / 材質: COPPER / メッシュ: 200 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 30 sec. / 前処理 - 雰囲気: AIR 詳細: Quantifoil R3.5/1 200-mesh grids (Quantifoil Micro Tools GmbH) were glow-discharged for 30 s at 40 mA using a GloQube (Quorum) glow discharge unit
凍結
凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277 K / 装置: FEI VITROBOT MARK IV / 詳細: blot force = 0 N blot time = 8 s.
詳細
Purified cat BRCA1dExon11-FL BARD1 (at 3 uM) was incubated with H2AKc15ub mono-nucleosomes (at 1.5 uM) for 1 h on ice before cryo-EM grids preparation
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電子顕微鏡法
顕微鏡
FEI TITAN KRIOS
撮影
フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 撮影したグリッド数: 1 / 実像数: 16015 / 平均露光時間: 5.0 sec. / 平均電子線量: 36.37 e/Å2
モデルのタイプ: OTHER 詳細: The start up model was generated directly from this dataset, following 2D Classification and Ab Initio Reconstruction in cryoSPARC 3.2.0