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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: 7zpi | |||||||||
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| タイトル | Mammalian Dicer in the "dicing state" with pre-miR-15a substrate | |||||||||
要素 |
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キーワード | RNA BINDING PROTEIN / endoribonuclease / dsRNA / complex / gene silencing / post-transcriptional / catalytic complex / cytoplasm | |||||||||
| 機能・相同性 | 機能・相同性情報regulation of muscle cell apoptotic process / MicroRNA (miRNA) biogenesis / Small interfering RNA (siRNA) biogenesis / ganglion development / hair follicle cell proliferation / zygote asymmetric cell division / cardiac neural crest cell development involved in outflow tract morphogenesis / regulation of oligodendrocyte differentiation / olfactory bulb interneuron differentiation / regulation of odontogenesis of dentin-containing tooth ...regulation of muscle cell apoptotic process / MicroRNA (miRNA) biogenesis / Small interfering RNA (siRNA) biogenesis / ganglion development / hair follicle cell proliferation / zygote asymmetric cell division / cardiac neural crest cell development involved in outflow tract morphogenesis / regulation of oligodendrocyte differentiation / olfactory bulb interneuron differentiation / regulation of odontogenesis of dentin-containing tooth / trophectodermal cell proliferation / regulation of enamel mineralization / regulation of miRNA metabolic process / peripheral nervous system myelin formation / spermatogonial cell division / regulation of RNA metabolic process / regulation of epithelial cell differentiation / global gene silencing by mRNA cleavage / spinal cord motor neuron differentiation / negative regulation of Schwann cell proliferation / epidermis morphogenesis / reproductive structure development / ribonuclease III / regulation of Notch signaling pathway / myoblast differentiation involved in skeletal muscle regeneration / regulation of regulatory T cell differentiation / positive regulation of Schwann cell differentiation / nerve development / RISC-loading complex / positive regulation of myelination / meiotic spindle organization / intestinal epithelial cell development / RISC complex assembly / regulatory ncRNA-mediated post-transcriptional gene silencing / miRNA processing / ribonuclease III activity / pre-miRNA processing / pericentric heterochromatin formation / siRNA processing / regulation of stem cell differentiation / regulation of viral genome replication / RISC complex / inner ear receptor cell development / mRNA stabilization / cartilage development / embryonic hindlimb morphogenesis / embryonic limb morphogenesis / digestive tract development / positive regulation of miRNA metabolic process / cardiac muscle cell development / miRNA binding / regulation of neuron differentiation / regulation of myelination / negative regulation of glial cell proliferation / hair follicle morphogenesis / stem cell population maintenance / branching morphogenesis of an epithelial tube / hair follicle development / regulation of neurogenesis / postsynaptic density, intracellular component / RNA processing / spindle assembly / spleen development / neuron projection morphogenesis / lung development / post-embryonic development / helicase activity / cerebral cortex development / multicellular organism growth / rRNA processing / regulation of gene expression / regulation of inflammatory response / angiogenesis / defense response to virus / gene expression / cell population proliferation / regulation of cell cycle / positive regulation of gene expression / perinuclear region of cytoplasm / glutamatergic synapse / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / DNA binding / ATP binding / metal ion binding / cytoplasm / cytosol 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: 5.91 Å | |||||||||
データ登録者 | Zanova, M. / Zapletal, D. / Kubicek, K. / Stefl, R. / Pinkas, M. / Novacek, J. | |||||||||
| 資金援助 | チェコ, 2件
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引用 | ジャーナル: Mol Cell / 年: 2022タイトル: Structural and functional basis of mammalian microRNA biogenesis by Dicer. 著者: David Zapletal / Eliska Taborska / Josef Pasulka / Radek Malik / Karel Kubicek / Martina Zanova / Christian Much / Marek Sebesta / Valeria Buccheri / Filip Horvat / Irena Jenickova / Michaela ...著者: David Zapletal / Eliska Taborska / Josef Pasulka / Radek Malik / Karel Kubicek / Martina Zanova / Christian Much / Marek Sebesta / Valeria Buccheri / Filip Horvat / Irena Jenickova / Michaela Prochazkova / Jan Prochazka / Matyas Pinkas / Jiri Novacek / Diego F Joseph / Radislav Sedlacek / Carrie Bernecky / Dónal O'Carroll / Richard Stefl / Petr Svoboda / ![]() 要旨: MicroRNA (miRNA) and RNA interference (RNAi) pathways rely on small RNAs produced by Dicer endonucleases. Mammalian Dicer primarily supports the essential gene-regulating miRNA pathway, but how it is ...MicroRNA (miRNA) and RNA interference (RNAi) pathways rely on small RNAs produced by Dicer endonucleases. Mammalian Dicer primarily supports the essential gene-regulating miRNA pathway, but how it is specifically adapted to miRNA biogenesis is unknown. We show that the adaptation entails a unique structural role of Dicer's DExD/H helicase domain. Although mice tolerate loss of its putative ATPase function, the complete absence of the domain is lethal because it assures high-fidelity miRNA biogenesis. Structures of murine Dicer•-miRNA precursor complexes revealed that the DExD/H domain has a helicase-unrelated structural function. It locks Dicer in a closed state, which facilitates miRNA precursor selection. Transition to a cleavage-competent open state is stimulated by Dicer-binding protein TARBP2. Absence of the DExD/H domain or its mutations unlocks the closed state, reduces substrate selectivity, and activates RNAi. Thus, the DExD/H domain structurally contributes to mammalian miRNA biogenesis and underlies mechanistical partitioning of miRNA and RNAi pathways. | |||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 7zpi.cif.gz | 318.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7zpi.ent.gz | 235.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7zpi.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/zp/7zpi ftp://data.pdbj.org/pub/pdb/validation_reports/zp/7zpi | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 14854MC ![]() 7yymC ![]() 7yynC ![]() 7yz4C ![]() 7zpjC ![]() 7zpkC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 |
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要素
| #1: タンパク質 | 分子量: 226925.656 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q8R418, ribonuclease III |
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| #2: RNA鎖 | 分子量: 19017.279 Da / 分子数: 1 / 由来タイプ: 合成 / 詳細: from Mus musculus / 由来: (合成) ![]() |
-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 |
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| 由来(組換発現) |
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| 緩衝液 | pH: 8 詳細: The buffer was always prepared fresh in RNAse-free manner. | ||||||||||||||||||||||||||||
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| 試料 | 濃度: 0.2 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: 277.15 K / 詳細: Described in STAR methods |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 60.198 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 実像数: 48253 |
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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 | |||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 2219694 | |||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 5.91 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 64038 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 27 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||
| 原子モデル構築 | B value: 520 / プロトコル: FLEXIBLE FIT / 空間: REAL Target criteria: Ramachandran Plot, Rotamer Analysis, Density Fit Analysis, Correlation coefficient 詳細: We used our previous deposition 7YYN as an initial model source. Initial local fitting was done using Chimera. ISOLDE was used for flexible fitting with torsion restraints defined for ...詳細: We used our previous deposition 7YYN as an initial model source. Initial local fitting was done using Chimera. ISOLDE was used for flexible fitting with torsion restraints defined for polypeptide chain and distance restraints for polyribonucleotides. | |||||||||||||||||||||||||||||||||||
| 原子モデル構築 | 3D fitting-ID: 1 / Accession code: 7YYN / Initial refinement model-ID: 1 / PDB-ID: 7YYN / Source name: PDB / タイプ: experimental model
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チェコ, 2件
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immunoprecipitation
Trichoplusia ni (イラクサキンウワバ)
