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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 9ja5 | ||||||||||||
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タイトル | Cryo-EM structure of Tdk1-Bdf1 complex | ||||||||||||
![]() | Meiotically up-regulated gene 135 protein,SWR1 complex bromodomain subunit bdf1,Immunoglobulin G-binding protein G | ||||||||||||
![]() | CELL CYCLE / signaling protein / meiotic cell cycle | ||||||||||||
機能・相同性 | ![]() Swr1 complex / IgG binding / DNA repair-dependent chromatin remodeling / transcription initiation-coupled chromatin remodeling / meiotic cell cycle / chromatin remodeling / regulation of DNA-templated transcription / chromatin / extracellular region / nucleus 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() ![]() ![]() | ||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.7 Å | ||||||||||||
![]() | Zhang, J. / Ye, K. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: A meiotic driver hijacks an epigenetic reader to disrupt mitosis in noncarrier offspring. 著者: Yu Hua / Jianxiu Zhang / Man-Yun Yang / Fan-Yi Zhang / Jing-Yi Ren / Xiao-Hui Lyu / Yan Ding / Fang Suo / Guang-Can Shao / Jun Li / Meng-Qiu Dong / Keqiong Ye / Li-Lin Du / ![]() 要旨: Killer meiotic drivers (KMDs) are selfish genetic elements that distort Mendelian inheritance by selectively killing meiotic products lacking the KMD element, thereby promoting their own propagation. ...Killer meiotic drivers (KMDs) are selfish genetic elements that distort Mendelian inheritance by selectively killing meiotic products lacking the KMD element, thereby promoting their own propagation. Although KMDs have been found in diverse eukaryotes, only a limited number of them have been characterized at the molecular level, and their killing mechanisms remain largely unknown. In this study, we identify that a gene previously deemed essential for cell survival in the fission yeast is a single-gene KMD. This gene, , kills nearly all progeny in a × cross. By analyzing polymorphisms of among natural strains, we identify a resistant haplotype, HT3. This haplotype lacks killing ability yet confers resistance to killing by the wild-type . Proximity labeling experiments reveal an interaction between Tdk1, the protein product of , and the epigenetic reader Bdf1. Interestingly, the nonkilling Tdk1-HT3 variant does not interact with Bdf1. Cryoelectron microscopy further elucidated the binding interface between Tdk1 and Bdf1, pinpointing mutations within Tdk1-HT3 that disrupt this interface. During sexual reproduction, Tdk1 forms stable Bdf1-binding nuclear foci in all spores after meiosis. These foci persist in germinated progeny and impede chromosome segregation during mitosis by generating aberrant chromosomal adhesions. This study identifies a KMD that masquerades as an essential gene and reveals the molecular mechanism by which this KMD hijacks cellular machinery to execute killing. Additionally, we unveil that losing the hijacking ability is an evolutionary path for this single-gene KMD to evolve into a nonkilling resistant haplotype. | ||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 215.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 161.4 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 61290MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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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
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集合体
登録構造単位 | ![]()
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要素
#1: 抗体 | 分子量: 49340.484 Da / 分子数: 6 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() 遺伝子: mug135, SPCC330.04c, bdf1, brf1, SPCC1450.02, SPCC191.13, spg 発現宿主: ![]() ![]() 参照: UniProt: O74876, UniProt: Q9Y7N0, UniProt: P06654 #2: 水 | ChemComp-HOH / | Has protein modification | N | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Tdk1-Bdf1 complex / タイプ: COMPLEX 詳細: The fusion protein comprises of the residues 211-357 of Tdk1,a linker sequence(SGGGSGGGSGGGSGFKKASSSDNKEQGGGSGGGSGSGGGS), residues 372-554 of Bdf1, a linker sequence of (SGGGSSGGGS) and ...詳細: The fusion protein comprises of the residues 211-357 of Tdk1,a linker sequence(SGGGSGGGSGGGSGFKKASSSDNKEQGGGSGGGSGSGGGS), residues 372-554 of Bdf1, a linker sequence of (SGGGSSGGGS) and residues 228-282 of Immunoglobulin G-binding protein G(GB1). Entity ID: #1 / 由来: RECOMBINANT | |||||||||||||||||||||||||
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分子量 | 値: 0.3 MDa / 実験値: NO | |||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) | 生物種: ![]() ![]() | |||||||||||||||||||||||||
緩衝液 | pH: 7.4 | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K / 詳細: blot for 5 seconds before plunging |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 2.7 mm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 50 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 実像数: 948 |
電子光学装置 | エネルギーフィルター名称: GIF Tridiem 4K / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 動画フレーム数/画像: 32 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 288083 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL / Target criteria: Correlation coefficient | ||||||||||||||||||||||||||||||||||||
拘束条件 |
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