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基本情報
登録情報 | データベース: EMDB / ID: EMD-23244 | |||||||||
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タイトル | Structure of human SHLD2-SHLD3-REV7-TRIP13(E253Q) complex | |||||||||
![]() | composite map | |||||||||
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![]() | REV7 / SHLD2 / SHLD3 / TRIP13 / NUCLEAR PROTEIN | |||||||||
機能・相同性 | ![]() female meiosis I / somatic diversification of immunoglobulins involved in immune response / DNA damage response, signal transduction resulting in transcription / meiotic recombination checkpoint signaling / zeta DNA polymerase complex / synaptonemal complex assembly / positive regulation of isotype switching / negative regulation of transcription by competitive promoter binding / positive regulation of double-strand break repair via nonhomologous end joining / negative regulation of cell-cell adhesion mediated by cadherin ...female meiosis I / somatic diversification of immunoglobulins involved in immune response / DNA damage response, signal transduction resulting in transcription / meiotic recombination checkpoint signaling / zeta DNA polymerase complex / synaptonemal complex assembly / positive regulation of isotype switching / negative regulation of transcription by competitive promoter binding / positive regulation of double-strand break repair via nonhomologous end joining / negative regulation of cell-cell adhesion mediated by cadherin / JUN kinase binding / male meiosis I / reciprocal meiotic recombination / oocyte maturation / negative regulation of epithelial to mesenchymal transition / regulation of double-strand break repair via homologous recombination / oogenesis / negative regulation of ubiquitin protein ligase activity / mitotic spindle assembly checkpoint signaling / telomere maintenance in response to DNA damage / positive regulation of peptidyl-serine phosphorylation / spermatid development / error-prone translesion synthesis / negative regulation of double-strand break repair via homologous recombination / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / actin filament organization / male germ cell nucleus / transcription coregulator activity / regulation of cell growth / negative regulation of canonical Wnt signaling pathway / negative regulation of protein catabolic process / spindle / transcription corepressor activity / site of double-strand break / double-strand break repair / actin cytoskeleton / chromosome / spermatogenesis / RNA polymerase II-specific DNA-binding transcription factor binding / transcription by RNA polymerase II / cell division / DNA repair / chromatin / positive regulation of DNA-templated transcription / nucleolus / negative regulation of transcription by RNA polymerase II / ATP hydrolysis activity / nucleoplasm / ATP binding / identical protein binding / nucleus / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.6 Å | |||||||||
![]() | Xie W / Patel DJ | |||||||||
![]() | ![]() タイトル: Molecular mechanisms of assembly and TRIP13-mediated remodeling of the human Shieldin complex. 著者: Wei Xie / Shengliu Wang / Juncheng Wang / M Jason de la Cruz / Guotai Xu / Maurizio Scaltriti / Dinshaw J Patel / ![]() 要旨: The Shieldin complex, composed of REV7, SHLD1, SHLD2, and SHLD3, protects DNA double-strand breaks (DSBs) to promote nonhomologous end joining. The AAA ATPase TRIP13 remodels Shieldin to regulate DNA ...The Shieldin complex, composed of REV7, SHLD1, SHLD2, and SHLD3, protects DNA double-strand breaks (DSBs) to promote nonhomologous end joining. The AAA ATPase TRIP13 remodels Shieldin to regulate DNA repair pathway choice. Here we report crystal structures of human SHLD3-REV7 binary and fused SHLD2-SHLD3-REV7 ternary complexes, revealing that assembly of Shieldin requires fused SHLD2-SHLD3 induced conformational heterodimerization of open (O-REV7) and closed (C-REV7) forms of REV7. We also report the cryogenic electron microscopy (cryo-EM) structures of the ATPγS-bound fused SHLD2-SHLD3-REV7-TRIP13 complexes, uncovering the principles underlying the TRIP13-mediated disassembly mechanism of the Shieldin complex. We demonstrate that the N terminus of REV7 inserts into the central channel of TRIP13, setting the stage for pulling the unfolded N-terminal peptide of C-REV7 through the central TRIP13 hexameric channel. The primary interface involves contacts between the safety-belt segment of C-REV7 and a conserved and negatively charged loop of TRIP13. This process is mediated by ATP hydrolysis-triggered rotatory motions of the TRIP13 ATPase, thereby resulting in the disassembly of the Shieldin complex. | |||||||||
履歴 |
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構造の表示
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構造ビューア | EMマップ: ![]() ![]() ![]() |
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「今月の分子」の関連する項目 |
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注釈 | composite map | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.064 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : SHLD2.3-REV7(4)-TRIP13(E253Q) complex with ATP-gamma-S
全体 | 名称: SHLD2.3-REV7(4)-TRIP13(E253Q) complex with ATP-gamma-S |
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要素 |
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-超分子 #1: SHLD2.3-REV7(4)-TRIP13(E253Q) complex with ATP-gamma-S
超分子 | 名称: SHLD2.3-REV7(4)-TRIP13(E253Q) complex with ATP-gamma-S タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#3 |
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由来(天然) | 生物種: ![]() |
-分子 #1: Pachytene checkpoint protein 2 homolog
分子 | 名称: Pachytene checkpoint protein 2 homolog / タイプ: protein_or_peptide / ID: 1 / コピー数: 6 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 48.562547 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: SDEAVGDLKQ ALPCVAESPT VHVEVHQRGS STAKKEDINL SVRKLLNRHN IVFGDYTWTE FDEPFLTRNV QSVSIIDTEL KVKDSQPID LSACTVALHI FQLNEDGPSS ENLEEETENI IAANHWVLPA AEFHGLWDSL VYDVEVKSHL LDYVMTTLLF S DKNVNSNL ...文字列: SDEAVGDLKQ ALPCVAESPT VHVEVHQRGS STAKKEDINL SVRKLLNRHN IVFGDYTWTE FDEPFLTRNV QSVSIIDTEL KVKDSQPID LSACTVALHI FQLNEDGPSS ENLEEETENI IAANHWVLPA AEFHGLWDSL VYDVEVKSHL LDYVMTTLLF S DKNVNSNL ITWNRVVLLH GPPGTGKTSL CKALAQKLTI RLSSRYRYGQ LIEINSHSLF SKWFSESGKL VTKMFQKIQD LI DDKDALV FVLIDQVESL TAARNACRAG TEPSDAIRVV NAVLTQIDQI KRHSNVVILT TSNITEKIDV AFVDRADIKQ YIG PPSAAA IFKIYLSCLE ELMKCQIIYP RQQLLTLREL EMIGFIENNV SKLSLLLNDI SRKSEGLSGR VLRKLPFLAH ALYV QAPTV TIEGFLQALS LAVDKQFEER KKLAAYI UniProtKB: Pachytene checkpoint protein 2 homolog |
-分子 #2: Mitotic spindle assembly checkpoint protein MAD2B
分子 | 名称: Mitotic spindle assembly checkpoint protein MAD2B / タイプ: protein_or_peptide / ID: 2 / 詳細: closed form / コピー数: 4 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 24.323348 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: STTLTRQDLN FGQVVADVLC EFLEVAVHLI LYVREVYPVG IFQKRKKYNV PVQMSCHPEL NQYIQDTLHC VKPLLEKNDV EKVVVVILD KEHRPVEKFV FEITQPPLLS ISSDSLLSHV EQLLRAFILK ISVCDAVLDH NPPGCTFTVL VHTREAATRN M EKIQVIKD ...文字列: STTLTRQDLN FGQVVADVLC EFLEVAVHLI LYVREVYPVG IFQKRKKYNV PVQMSCHPEL NQYIQDTLHC VKPLLEKNDV EKVVVVILD KEHRPVEKFV FEITQPPLLS ISSDSLLSHV EQLLRAFILK ISVCDAVLDH NPPGCTFTVL VHTREAATRN M EKIQVIKD FPWILADEQD VHMHDPRLIP LKTMTSDILK MQLYVEERAH KGS UniProtKB: Mitotic spindle assembly checkpoint protein MAD2B |
-分子 #3: Shieldin complex subunit 2, Shieldin complex subunit 3 chimera
分子 | 名称: Shieldin complex subunit 2, Shieldin complex subunit 3 chimera タイプ: protein_or_peptide / ID: 3 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 10.678139 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MSQVHIFWGA PIAPLKGSGS GSGSGSGSGS GSTTEVILHY RPCESDPTQL PKIAEKAIQD FPTRPLSRFI PWFPYDGSKL PLRPKRSPP ASREEIMATL UniProtKB: Shieldin complex subunit 2, Shieldin complex subunit 3 |
-分子 #4: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
分子 | 名称: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / タイプ: ligand / ID: 4 / コピー数: 5 / 式: AGS |
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分子量 | 理論値: 523.247 Da |
Chemical component information | ![]() ChemComp-AGS: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
濃度 | 0.3 mg/mL |
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緩衝液 | pH: 7.3 詳細: 20 mM HEPES, pH 7.3, 300 mM NaCl, 5 mM MgCl2, 0.1 mM ATP-gamma-S, 1 mM DTT |
グリッド | モデル: UltrAuFoil R1.2/1.3 / 材質: GOLD / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 60 sec. |
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: 1.5-second blot, blot force of 0. |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 40 / 平均露光時間: 0.075 sec. / 平均電子線量: 53.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): -2.5 µm / 最小 デフォーカス(公称値): -1.0 µm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |