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基本情報
登録情報 | データベース: PDB / ID: 9hfl | ||||||
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タイトル | Cryo-EM structure of the human snRNA export complex comprising CBC-PHAX-CRM1-RanGTP and capped-RNA | ||||||
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![]() | RNA BINDING PROTEIN / snRNA export / Exportin / Cap-binding / Co-transcriptional regulation | ||||||
機能・相同性 | ![]() mRNA cap binding complex binding / positive regulation of RNA binding / snRNA export from nucleus / cellular response to triglyceride / nuclear cap binding complex / cellular response to salt / histone mRNA metabolic process / RNA cap binding complex / mRNA metabolic process / RNA stabilization ...mRNA cap binding complex binding / positive regulation of RNA binding / snRNA export from nucleus / cellular response to triglyceride / nuclear cap binding complex / cellular response to salt / histone mRNA metabolic process / RNA cap binding complex / mRNA metabolic process / RNA stabilization / positive regulation of RNA export from nucleus / HuR (ELAVL1) binds and stabilizes mRNA / positive regulation of mRNA 3'-end processing / cap-dependent translational initiation / annulate lamellae / Processing of Intronless Pre-mRNAs / regulation of proteasomal ubiquitin-dependent protein catabolic process / snRNA binding / RNA cap binding / pre-miRNA export from nucleus / RNA nuclear export complex / snRNA import into nucleus / regulation of centrosome duplication / alternative mRNA splicing, via spliceosome / nuclear export signal receptor activity / primary miRNA processing / miRNA-mediated post-transcriptional gene silencing / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / regulation of mRNA processing / regulatory ncRNA-mediated post-transcriptional gene silencing / Regulation of cholesterol biosynthesis by SREBP (SREBF) / Transport of the SLBP independent Mature mRNA / Transport of the SLBP Dependant Mature mRNA / RNA 7-methylguanosine cap binding / regulation of protein export from nucleus / mRNA 3'-end processing / Transport of Mature mRNA Derived from an Intronless Transcript / protein localization to nucleolus / positive regulation of mRNA splicing, via spliceosome / Rev-mediated nuclear export of HIV RNA / Nuclear import of Rev protein / mRNA 3'-end processing / NEP/NS2 Interacts with the Cellular Export Machinery / mRNA cis splicing, via spliceosome / Transport of Mature mRNA derived from an Intron-Containing Transcript / RNA catabolic process / GTP metabolic process / tRNA processing in the nucleus / Postmitotic nuclear pore complex (NPC) reformation / RNA Polymerase II Transcription Termination / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / Abortive elongation of HIV-1 transcript in the absence of Tat / regulation of translational initiation / nucleocytoplasmic transport / FGFR2 alternative splicing / MicroRNA (miRNA) biogenesis / Signaling by FGFR2 IIIa TM / DNA metabolic process / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / Maturation of hRSV A proteins / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / mitotic sister chromatid segregation / Processing of Capped Intron-Containing Pre-mRNA / RNA polymerase II transcribes snRNA genes / ribosomal large subunit export from nucleus / 7-methylguanosine mRNA capping / Estrogen-dependent nuclear events downstream of ESR-membrane signaling / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / protein localization to nucleus / viral process / toxic substance binding / Formation of HIV-1 elongation complex containing HIV-1 Tat / nuclear pore / ribosomal subunit export from nucleus / mRNA export from nucleus / Cajal body / Formation of HIV elongation complex in the absence of HIV Tat / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Cyclin A/B1/B2 associated events during G2/M transition / ribosomal small subunit export from nucleus / Formation of RNA Pol II elongation complex / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / NPAS4 regulates expression of target genes / RNA Polymerase II Pre-transcription Events / Mitotic Prometaphase / centriole / EML4 and NUDC in mitotic spindle formation / Transcriptional and post-translational regulation of MITF-M expression and activity / mRNA Splicing - Major Pathway / RNA splicing / Resolution of Sister Chromatid Cohesion / protein export from nucleus / Downregulation of TGF-beta receptor signaling / mitotic spindle organization / Deactivation of the beta-catenin transactivating complex / positive regulation of transcription elongation by RNA polymerase II 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: 2.62 Å | ||||||
![]() | Dubiez, E. / Cusack, S. / Kadlec, J. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for the synergistic assembly of the snRNA export complex. 著者: Etienne Dubiez / William Garland / Maja Finderup Brask / Elisabetta Boeri Erba / Torben Heick Jensen / Jan Kadlec / Stephen Cusack / ![]() ![]() 要旨: The nuclear cap-binding complex (CBC) and its partner Arsenite-Resistance Protein 2 (ARS2) regulate the fate of RNA polymerase II transcripts via mutually exclusive interactions with RNA effectors. ...The nuclear cap-binding complex (CBC) and its partner Arsenite-Resistance Protein 2 (ARS2) regulate the fate of RNA polymerase II transcripts via mutually exclusive interactions with RNA effectors. One such effector is PHAX, which mediates the nuclear export of U-rich small nuclear RNAs (snRNAs). Here we present the cryo-electron microscopy structure of the human snRNA export complex comprising phosphorylated PHAX, CBC, CRM1-RanGTP and capped RNA. The central region of PHAX bridges CBC to the export factor CRM1-RanGTP, while also reinforcing cap dinucleotide binding. Additionally, PHAX interacts with a distant region of CRM1, facilitating contacts of the essential phosphorylated region of PHAX with the prominent basic surface of RanGTP. CBC engagement within the snRNA export complex is incompatible with its binding to other RNA effectors such as ALYREF or NCBP3. We demonstrate that snRNA export complex formation requires synergistic binding of all its components, which in turn displaces ARS2 from CBC and commits the complex for export. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 860.1 KB | 表示 | ![]() |
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PDB形式 | ![]() | 700.7 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.5 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.5 MB | 表示 | |
XML形式データ | ![]() | 70.7 KB | 表示 | |
CIF形式データ | ![]() | 107 KB | 表示 | |
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 | ![]() 52115MC 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
-タンパク質 , 3種, 4分子 ABNP
#1: タンパク質 | 分子量: 123518.359 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: Human Exportin 1 CRM1 / 由来: (組換発現) ![]() ![]() ![]() |
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#2: タンパク質 | 分子量: 24441.135 Da / 分子数: 1 / Mutation: Q69L / 由来タイプ: 組換発現 / 詳細: RanGTP Q69L catalytic mutant / 由来: (組換発現) ![]() ![]() ![]() 参照: UniProt: P62826, 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 |
#5: タンパク質 | 分子量: 44468.574 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
-Nuclear cap-binding protein subunit ... , 2種, 2分子 CD
#3: タンパク質 | 分子量: 91960.297 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: Human NCBP1 CBP80 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: Q09161 |
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#4: タンパク質 | 分子量: 18028.131 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: Human NCBP2 CBP20 / 由来: (組換発現) ![]() ![]() ![]() |
-RNA鎖 , 1種, 1分子 R
#6: RNA鎖 | 分子量: 4439.715 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() |
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-非ポリマー , 4種, 35分子 






#7: 化合物 | ChemComp-GTP / |
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#8: 化合物 | ChemComp-MG / |
#9: 化合物 | ChemComp-GTA / |
#10: 水 | ChemComp-HOH / |
-詳細
研究の焦点であるリガンドがあるか | Y |
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Has protein modification | N |
-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: Human snRNA export complex comprising CBC-PHAX-CRM1-RanGTP and capped-RNA タイプ: COMPLEX / Entity ID: #1-#6 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 8 |
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 | 凍結剤: ETHANE |
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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: TFS KRIOS |
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): 2200 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 40.5 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.62 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 202738 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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