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基本情報
登録情報 | データベース: EMDB / ID: EMD-4525 | |||||||||
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タイトル | Human post-catalytic spliceosome (P complex) stalled with DHX8 K594A mutant, overall map | |||||||||
![]() | Human post-catalytic spliceosome (P complex) stalled with DHX8 K594A mutant, overall map | |||||||||
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![]() | spliceosome / RNA / complex / SPLICING | |||||||||
機能・相同性 | ![]() regulation of homologous chromosome segregation / endoplasmic reticulum membrane organization / second spliceosomal transesterification activity / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / negative regulation of nitric-oxide synthase activity / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / post-spliceosomal complex / cellular response to selenite ion / selenocysteine insertion sequence binding ...regulation of homologous chromosome segregation / endoplasmic reticulum membrane organization / second spliceosomal transesterification activity / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / negative regulation of nitric-oxide synthase activity / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / post-spliceosomal complex / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / pre-mRNA 3'-splice site binding / NOSIP mediated eNOS trafficking / protein exit from endoplasmic reticulum / granulocyte differentiation / negative regulation of phosphorylation / regulation of translation at postsynapse, modulating synaptic transmission / negative regulation of catalytic activity / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / renal system process / negative regulation of toll-like receptor signaling pathway / U2 snRNP binding / U7 snRNA binding / negative regulation of excitatory postsynaptic potential / histone pre-mRNA DCP binding / U7 snRNP / 3'-5' RNA helicase activity / endonucleolytic cleavage of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / generation of catalytic spliceosome for first transesterification step / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / histone pre-mRNA 3'end processing complex / alternative mRNA splicing, via spliceosome / cis assembly of pre-catalytic spliceosome / regulation of vitamin D receptor signaling pathway / negative regulation of interleukin-8 production / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / negative regulation of lipopolysaccharide-mediated signaling pathway / regulation of mRNA processing / Deadenylation of mRNA / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / nuclear retinoic acid receptor binding / embryonic brain development / protein methylation / negative regulation of interferon-beta production / U12-type spliceosomal complex / poly(A) binding / 7-methylguanosine cap hypermethylation / M-decay: degradation of maternal mRNAs by maternally stored factors / U1 snRNP binding / RNA splicing, via transesterification reactions / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / methylosome / ATP-dependent activity, acting on RNA / pICln-Sm protein complex / embryonic cranial skeleton morphogenesis / regulation of mRNA splicing, via spliceosome / oocyte development / C2H2 zinc finger domain binding / U2-type catalytic step 1 spliceosome / positive regulation of mRNA splicing, via spliceosome / pre-mRNA binding / snRNP binding / small nuclear ribonucleoprotein complex / regulation of nitric oxide biosynthetic process / telomerase holoenzyme complex / SMN-Sm protein complex / P granule / telomerase RNA binding / spliceosomal tri-snRNP complex / positive regulation by host of viral transcription / U2-type precatalytic spliceosome / U2-type spliceosomal complex / positive regulation of vitamin D receptor signaling pathway / commitment complex / mRNA cis splicing, via spliceosome / U2-type prespliceosome assembly / Transport of Mature mRNA derived from an Intron-Containing Transcript / nuclear vitamin D receptor binding / Notch binding / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / U2-type catalytic step 2 spliceosome / RUNX3 regulates NOTCH signaling / positive regulation of alpha-beta T cell differentiation / NOTCH4 Intracellular Domain Regulates Transcription / U4 snRNP / U2 snRNP / RNA Polymerase II Transcription Termination / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / exploration behavior / U1 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / U2-type prespliceosome / WD40-repeat domain binding / protein peptidyl-prolyl isomerization / inner cell mass cell proliferation / regulation of alternative mRNA splicing, via spliceosome / negative regulation of type I interferon-mediated signaling pathway 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: 3.3 Å | |||||||||
![]() | Fica SM / Oubridge C | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: A human postcatalytic spliceosome structure reveals essential roles of metazoan factors for exon ligation. 著者: Sebastian M Fica / Chris Oubridge / Max E Wilkinson / Andrew J Newman / Kiyoshi Nagai / ![]() 要旨: During exon ligation, the spliceosome recognizes the 3'-splice site (3'SS) of precursor messenger RNA (pre-mRNA) through non-Watson-Crick pairing with the 5'SS and the branch adenosine, in a ...During exon ligation, the spliceosome recognizes the 3'-splice site (3'SS) of precursor messenger RNA (pre-mRNA) through non-Watson-Crick pairing with the 5'SS and the branch adenosine, in a conformation stabilized by Prp18 and Prp8. Here we present the 3.3-angstrom cryo-electron microscopy structure of a human postcatalytic spliceosome just after exon ligation. The 3'SS docks at the active site through conserved RNA interactions in the absence of Prp18. Unexpectedly, the metazoan-specific FAM32A directly bridges the 5'-exon and intron 3'SS of pre-mRNA and promotes exon ligation, as shown by functional assays. CACTIN, SDE2, and NKAP-factors implicated in alternative splicing-further stabilize the catalytic conformation of the spliceosome during exon ligation. Together these four proteins act as exon ligation factors. Our study reveals how the human spliceosome has co-opted additional proteins to modulate a conserved RNA-based mechanism for 3'SS selection and to potentially fine-tune alternative splicing at the exon ligation stage. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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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 | ![]() | 243.5 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 74.2 KB 74.2 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 14.5 KB | 表示 | ![]() |
画像 | ![]() | 49.1 KB | ||
Filedesc metadata | ![]() | 20 KB | ||
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 | ![]() 6qdvMC ![]() 9fmdM ![]() 4526C ![]() 4527C ![]() 4528C ![]() 4529C ![]() 4530C ![]() 4532C ![]() 4533C ![]() 4534C ![]() 4535C M: このマップから作成された原子モデル C: 同じ文献を引用 ( |
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類似構造データ |
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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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注釈 | Human post-catalytic spliceosome (P complex) stalled with DHX8 K594A mutant, overall 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: 1.2 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 : Human post-catalytic P complex spliceosome
+超分子 #1: Human post-catalytic P complex spliceosome
+超分子 #2: Human post-catalytic P complex spliceosome
+超分子 #3: ATP-dependent RNA helicase DHX8
+超分子 #4: MINX introns and exons
+分子 #1: U2 snRNA
+分子 #2: U5 snRNA
+分子 #3: U6 snRNA
+分子 #11: Ligated exons: MINX mRNA
+分子 #15: Intron lariat: MINX RNA
+分子 #4: Eukaryotic initiation factor 4A-III, N-terminally processed
+分子 #5: RNA-binding protein 8A
+分子 #6: Protein mago nashi homolog 2
+分子 #7: Pre-mRNA-processing-splicing factor 8
+分子 #8: U5 small nuclear ribonucleoprotein 200 kDa helicase
+分子 #9: 116 kDa U5 small nuclear ribonucleoprotein component
+分子 #10: PRKR-interacting protein 1
+分子 #12: Cactin
+分子 #13: Protein FAM32A
+分子 #14: Pre-mRNA-splicing factor CWC22 homolog
+分子 #16: Pleiotropic regulator 1
+分子 #17: SNW domain-containing protein 1
+分子 #18: Protein BUD31 homolog
+分子 #19: Pre-mRNA-splicing factor RBM22
+分子 #20: U5 small nuclear ribonucleoprotein 40 kDa protein
+分子 #21: Cell division cycle 5-like protein
+分子 #22: Spliceosome-associated protein CWC15 homolog
+分子 #23: Serine/arginine repetitive matrix protein 2
+分子 #24: Crooked neck-like protein 1
+分子 #25: Pre-mRNA-splicing factor SYF1
+分子 #26: Intron-binding protein aquarius
+分子 #27: ATP-dependent RNA helicase DHX8
+分子 #28: U2 small nuclear ribonucleoprotein A'
+分子 #29: U2 small nuclear ribonucleoprotein B''
+分子 #30: NF-kappa-B-activating protein
+分子 #31: Small nuclear ribonucleoprotein-associated proteins B and B'
+分子 #32: Pre-mRNA-splicing factor SLU7
+分子 #33: Small nuclear ribonucleoprotein Sm D3
+分子 #34: Small nuclear ribonucleoprotein E
+分子 #35: Small nuclear ribonucleoprotein F
+分子 #36: Small nuclear ribonucleoprotein G
+分子 #37: Small nuclear ribonucleoprotein Sm D1
+分子 #38: Peptidyl-prolyl cis-trans isomerase-like 1
+分子 #39: Small nuclear ribonucleoprotein Sm D2
+分子 #40: Pre-mRNA-processing factor 17
+分子 #41: Pre-mRNA-splicing factor SPF27
+分子 #42: Pre-mRNA-processing factor 19
+分子 #43: Pre-mRNA-splicing factor SYF2
+分子 #44: Replication stress response regulator SDE2
+分子 #45: MAGNESIUM ION
+分子 #46: POTASSIUM ION
+分子 #47: ADENOSINE-5'-TRIPHOSPHATE
+分子 #48: GUANOSINE-5'-TRIPHOSPHATE
+分子 #49: ZINC ION
+分子 #50: INOSITOL HEXAKISPHOSPHATE
-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: 7.9 構成要素:
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グリッド | モデル: Quantifoil R2/2 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: CONTINUOUS / 支持フィルム - Film thickness: 7 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 15 sec. / 前処理 - 雰囲気: AIR | ||||||||||||
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 III 詳細: 3 uL sample was applied to the grid, left for 25s, then blotted for 2.5-3.5s and immediately plunged into liquid ethane.. |
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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 K2 SUMMIT (4k x 4k) 検出モード: COUNTING / デジタル化 - 画像ごとのフレーム数: 1-40 / 撮影したグリッド数: 2 / 実像数: 6200 / 平均露光時間: 10.0 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 / Cs: 2.7 mm / 最大 デフォーカス(公称値): 3.5 µm / 最小 デフォーカス(公称値): 1.5 µm / 倍率(公称値): 135000 |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |