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基本情報
登録情報 | ![]() | ||||||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of a human BCDX2/ssDNA complex | ||||||||||||||||||||||||||||||
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![]() | DNA binding protein / ATP binding domain / homologous recombination / RAD51 paralog / RECOMBINATION / ssDNA | ||||||||||||||||||||||||||||||
機能・相同性 | ![]() meiotic DNA recombinase assembly / Rad51C-XRCC3 complex / Rad51B-Rad51C-Rad51D-XRCC2 complex / female meiosis sister chromatid cohesion / blastocyst growth / crossover junction DNA endonuclease activity / somite development / telomere maintenance via recombination / DNA strand invasion / Impaired BRCA2 binding to PALB2 ...meiotic DNA recombinase assembly / Rad51C-XRCC3 complex / Rad51B-Rad51C-Rad51D-XRCC2 complex / female meiosis sister chromatid cohesion / blastocyst growth / crossover junction DNA endonuclease activity / somite development / telomere maintenance via recombination / DNA strand invasion / Impaired BRCA2 binding to PALB2 / gamma-tubulin binding / reciprocal meiotic recombination / regulation of fibroblast apoptotic process / sister chromatid cohesion / centrosome cycle / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Homologous DNA Pairing and Strand Exchange / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / Resolution of D-loop Structures through Holliday Junction Intermediates / positive regulation of neurogenesis / ATP-dependent DNA damage sensor activity / positive regulation of G2/M transition of mitotic cell cycle / male meiosis I / Presynaptic phase of homologous DNA pairing and strand exchange / response to X-ray / ATP-dependent activity, acting on DNA / neurogenesis / meiotic cell cycle / somitogenesis / interstrand cross-link repair / telomere maintenance / Meiotic recombination / replication fork / TP53 Regulates Transcription of DNA Repair Genes / response to gamma radiation / double-strand break repair via homologous recombination / multicellular organism growth / HDR through Homologous Recombination (HRR) / cell junction / Factors involved in megakaryocyte development and platelet production / double-stranded DNA binding / mitotic cell cycle / single-stranded DNA binding / chromosome, telomeric region / spermatogenesis / DNA recombination / in utero embryonic development / negative regulation of neuron apoptotic process / regulation of cell cycle / DNA repair / intracellular membrane-bounded organelle / centrosome / positive regulation of cell population proliferation / perinuclear region of cytoplasm / ATP hydrolysis activity / mitochondrion / DNA binding / nucleoplasm / ATP binding / nucleus / cytoplasm / cytosol 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: 3.11 Å | ||||||||||||||||||||||||||||||
![]() | Jia L / Wasmuth EV / Ruben EA / Sung P / Rawal Y / Greene EC / Meir A / Olsen SK | ||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into BCDX2 complex function in homologous recombination. 著者: Yashpal Rawal / Lijia Jia / Aviv Meir / Shuo Zhou / Hardeep Kaur / Eliza A Ruben / Youngho Kwon / Kara A Bernstein / Maria Jasin / Alexander B Taylor / Sandeep Burma / Robert Hromas / ...著者: Yashpal Rawal / Lijia Jia / Aviv Meir / Shuo Zhou / Hardeep Kaur / Eliza A Ruben / Youngho Kwon / Kara A Bernstein / Maria Jasin / Alexander B Taylor / Sandeep Burma / Robert Hromas / Alexander V Mazin / Weixing Zhao / Daohong Zhou / Elizabeth V Wasmuth / Eric C Greene / Patrick Sung / Shaun K Olsen / ![]() 要旨: Homologous recombination (HR) fulfils a pivotal role in the repair of DNA double-strand breaks and collapsed replication forks. HR depends on the products of several paralogues of RAD51, including ...Homologous recombination (HR) fulfils a pivotal role in the repair of DNA double-strand breaks and collapsed replication forks. HR depends on the products of several paralogues of RAD51, including the tetrameric complex of RAD51B, RAD51C, RAD51D and XRCC2 (BCDX2). BCDX2 functions as a mediator of nucleoprotein filament assembly by RAD51 and single-stranded DNA (ssDNA) during HR, but its mechanism remains undefined. Here we report cryogenic electron microscopy reconstructions of human BCDX2 in apo and ssDNA-bound states. The structures reveal how the amino-terminal domains of RAD51B, RAD51C and RAD51D participate in inter-subunit interactions that underpin complex formation and ssDNA-binding specificity. Single-molecule DNA curtain analysis yields insights into how BCDX2 enhances RAD51-ssDNA nucleoprotein filament assembly. Moreover, our cryogenic electron microscopy and functional analyses explain how RAD51C alterations found in patients with cancer inactivate DNA binding and the HR mediator activity of BCDX2. Our findings shed light on the role of BCDX2 in HR and provide a foundation for understanding how pathogenic alterations in BCDX2 impact genome repair. | ||||||||||||||||||||||||||||||
履歴 |
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 59.7 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 22.1 KB 22.1 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 11.7 KB | 表示 | ![]() |
画像 | ![]() | 132.1 KB | ||
マスクデータ | ![]() | 64 MB | ![]() | |
その他 | ![]() ![]() | 59.5 MB 59.5 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 8gbjMC ![]() 8fazC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 0.87 Å | ||||||||||||||||||||
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-マスク #1
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_29917_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_29917_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : Cryo-EM structure of heterotetrameric human BCDX2 in complex with...
全体 | 名称: Cryo-EM structure of heterotetrameric human BCDX2 in complex with ssDNA |
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要素 |
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-超分子 #1: Cryo-EM structure of heterotetrameric human BCDX2 in complex with...
超分子 | 名称: Cryo-EM structure of heterotetrameric human BCDX2 in complex with ssDNA タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#5 |
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由来(天然) | 生物種: ![]() |
-分子 #1: DNA repair protein RAD51 homolog 2
分子 | 名称: DNA repair protein RAD51 homolog 2 / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 39.125855 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MGSKKLKRVG LSQELCDRLS RHQILTCQDF LCLSPLELMK VTGLSYRGVH ELLCMVSRAC APKMQTAYGI KAQRSADFSP AFLSTTLSA LDEALHGGVA CGSLTEITGP PGCGKTQFCI MMSILATLPT NMGGLEGAVV YIDTESAFSA ERLVEIAESR F PRYFNTEE ...文字列: MGSKKLKRVG LSQELCDRLS RHQILTCQDF LCLSPLELMK VTGLSYRGVH ELLCMVSRAC APKMQTAYGI KAQRSADFSP AFLSTTLSA LDEALHGGVA CGSLTEITGP PGCGKTQFCI MMSILATLPT NMGGLEGAVV YIDTESAFSA ERLVEIAESR F PRYFNTEE KLLLTSSKVH LYRELTCDEV LQRIESLEEE IISKGIKLVI LDSVASVVRK EFDAQLQGNL KERNKFLARE AS SLKYLAE EFSIPVILTN QITTHLSGAL ASQADLVSPA DDLSLSEGTS GSSCVIAALG NTWSHSVNTR LILQYLDSER RQI LIAKSP LAPFTSFVYT IKEEGLVLQA YGNSHHHHHH UniProtKB: DNA repair protein RAD51 homolog 2 |
-分子 #2: DNA repair protein RAD51 homolog 3
分子 | 名称: DNA repair protein RAD51 homolog 3 / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 42.244609 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MRGKTFRFEM QRDLVSFPLS PAVRVKLVSA GFQTAEELLE VKPSELSKEV GISKAEALET LQIIRRECLT NKPRYAGTSE SHKKCTALE LLEQEHTQGF IITFCSALDD ILGGGVPLMK TTEICGAPGV GKTQLCMQLA VDVQIPECFG GVAGEAVFID T EGSFMVDR ...文字列: MRGKTFRFEM QRDLVSFPLS PAVRVKLVSA GFQTAEELLE VKPSELSKEV GISKAEALET LQIIRRECLT NKPRYAGTSE SHKKCTALE LLEQEHTQGF IITFCSALDD ILGGGVPLMK TTEICGAPGV GKTQLCMQLA VDVQIPECFG GVAGEAVFID T EGSFMVDR VVDLATACIQ HLQLIAEKHK GEEHRKALED FTLDNILSHI YYFRCRDYTE LLAQVYLLPD FLSEHSKVRL VI VDGIAFP FRHDLDDLSL RTRLLNGLAQ QMISLANNHR LAVILTNQMT TKIDRNQALL VPALGESWGH AATIRLIFHW DRK QRLATL YKSPSQKECT VLFQIKPQGF RDTVVTSACS LQTEGSLSTR KRSRDPEEEL UniProtKB: DNA repair protein RAD51 homolog 3 |
-分子 #3: DNA repair protein RAD51 homolog 4
分子 | 名称: DNA repair protein RAD51 homolog 4 / タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 35.084254 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MGVLRVGLCP GLTEEMIQLL RSHRIKTVVD LVSADLEEVA QKCGLSYKAL VALRRVLLAQ FSAFPVNGAD LYEELKTSTA ILSTGIGSL DKLLDAGLYT GEVTEIVGGP GSGKTQVCLC MAANVAHGLQ QNVLYVDSNG GLTASRLLQL LQAKTQDEEE Q AEALRRIQ ...文字列: MGVLRVGLCP GLTEEMIQLL RSHRIKTVVD LVSADLEEVA QKCGLSYKAL VALRRVLLAQ FSAFPVNGAD LYEELKTSTA ILSTGIGSL DKLLDAGLYT GEVTEIVGGP GSGKTQVCLC MAANVAHGLQ QNVLYVDSNG GLTASRLLQL LQAKTQDEEE Q AEALRRIQ VVHAFDIFQM LDVLQELRGT VAQQVTGSSG TVKVVVVDSV TAVVSPLLGG QQREGLALMM QLARELKTLA RD LGMAVVV TNHITRDRDS GRLKPALGRS WSFVPSTRIL LDTIEGAGAS GGRRMACLAK SSRQPTGFQE MVDIGTWGTS EQS ATLQGD QT UniProtKB: DNA repair protein RAD51 homolog 4 |
-分子 #4: DNA repair protein XRCC2
分子 | 名称: DNA repair protein XRCC2 / タイプ: protein_or_peptide / ID: 4 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 32.992488 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MCSAFHRAES GTELLARLEG RSSLKEIEPN LFADEDSPVH GDILEFHGPE GTGKTEMLYH LTARCILPKS EGGLEVEVLF IDTDYHFDM LRLVTILEHR LSQSSEEIIK YCLGRFFLVY CSSSTHLLLT LYSLESMFCS HPSLCLLILD SLSAFYWIDR V NGGESVNL ...文字列: MCSAFHRAES GTELLARLEG RSSLKEIEPN LFADEDSPVH GDILEFHGPE GTGKTEMLYH LTARCILPKS EGGLEVEVLF IDTDYHFDM LRLVTILEHR LSQSSEEIIK YCLGRFFLVY CSSSTHLLLT LYSLESMFCS HPSLCLLILD SLSAFYWIDR V NGGESVNL QESTLRKCSQ CLEKLVNDYR LVLFATTQTI MQKASSSSEE PSHASRRLCD VDIDYRPYLC KAWQQLVKHR MF FSKQDDS QSSNQFSLVS RCLKSNSLKK HFFIIGESGV EFCDYKDDDD K UniProtKB: DNA repair protein XRCC2 |
-分子 #5: DNA (5'-D(P*CP*CP*CP*CP*CP*C)-3')
分子 | 名称: DNA (5'-D(P*CP*CP*CP*CP*CP*C)-3') / タイプ: dna / ID: 5 / コピー数: 1 / 分類: DNA |
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由来(天然) | 生物種: synthetic construct (人工物) |
分子量 | 理論値: 8.630495 KDa |
配列 | 文字列: (DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC) (DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC) (DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC)(DC) (DC) |
-分子 #6: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
分子 | 名称: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / タイプ: ligand / ID: 6 / コピー数: 3 / 式: ANP |
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分子量 | 理論値: 506.196 Da |
Chemical component information | ![]() ChemComp-ANP: |
-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 | 0.9 mg/mL |
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緩衝液 | pH: 7.5 |
凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | TFS GLACIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 平均電子線量: 51.0 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: ![]() |
電子光学系 | C2レンズ絞り径: 50.0 µm / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 0.8 µm |