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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: 6ff7 | ||||||
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タイトル | human Bact spliceosome core structure | ||||||
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![]() | SPLICING / spliceosome / human / HELA / BACT / dynamics | ||||||
機能・相同性 | ![]() post-spliceosomal complex / RES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding ...post-spliceosomal complex / RES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 3'-5' RNA helicase activity / generation of catalytic spliceosome for first transesterification step / 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 / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / B-WICH complex / miRNA processing / splicing factor binding / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / nuclear retinoic acid receptor binding / embryonic brain development / protein methylation / U12-type spliceosomal complex / poly(A) binding / 7-methylguanosine cap hypermethylation / U1 snRNP binding / RNA splicing, via transesterification reactions / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / methylosome / blastocyst formation / pICln-Sm protein complex / 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 / 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 / NOTCH4 Intracellular Domain Regulates Transcription / SAGA complex / U4 snRNP / RHOBTB1 GTPase cycle / U2 snRNP / RNA Polymerase II Transcription Termination / U1 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / U2-type prespliceosome / WD40-repeat domain binding / protein peptidyl-prolyl isomerization / positive regulation of transcription by RNA polymerase III / inner cell mass cell proliferation / positive regulation of neurogenesis / ubiquitin-ubiquitin ligase activity / nuclear androgen receptor binding / K63-linked polyubiquitin modification-dependent protein binding / precatalytic spliceosome / lipid biosynthetic process / cyclosporin A binding / generation of catalytic spliceosome for second transesterification step / pattern recognition receptor activity / Notch-HLH transcription pathway / Formation of paraxial mesoderm / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / positive regulation of transcription by RNA polymerase I / spliceosomal complex assembly / regulation of RNA splicing / mRNA Splicing - Minor Pathway / mRNA 3'-splice site recognition / spliceosomal tri-snRNP complex assembly / blastocyst development / Prp19 complex / protein K63-linked ubiquitination / U5 snRNA binding / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / protein localization to 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: 4.5 Å | ||||||
![]() | Haselbach, D. / Komarov, I. / Agafonov, D. / Hartmuth, K. / Graf, B. / Kastner, B. / Luehrmann, R. / Stark, H. | ||||||
![]() | ![]() タイトル: Structure and Conformational Dynamics of the Human Spliceosomal B Complex. 著者: David Haselbach / Ilya Komarov / Dmitry E Agafonov / Klaus Hartmuth / Benjamin Graf / Olexandr Dybkov / Henning Urlaub / Berthold Kastner / Reinhard Lührmann / Holger Stark / ![]() 要旨: The spliceosome is a highly dynamic macromolecular complex that precisely excises introns from pre-mRNA. Here we report the cryo-EM 3D structure of the human B spliceosome at 3.4 Å resolution. In ...The spliceosome is a highly dynamic macromolecular complex that precisely excises introns from pre-mRNA. Here we report the cryo-EM 3D structure of the human B spliceosome at 3.4 Å resolution. In the B state, the spliceosome is activated but not catalytically primed, so that it is functionally blocked prior to the first catalytic step of splicing. The spliceosomal core is similar to the yeast B spliceosome; important differences include the presence of the RNA helicase aquarius and peptidyl prolyl isomerases. To examine the overall dynamic behavior of the purified spliceosome, we developed a principal component analysis-based approach. Calculating the energy landscape revealed eight major conformational states, which we refined to higher resolution. Conformational differences of the highly flexible structural components between these eight states reveal how spliceosomal components contribute to the assembly of the spliceosome, allowing it to generate a dynamic interaction network required for its subsequent catalytic activation. | ||||||
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 | 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 | ![]() | 2.8 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.8 MB | 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 | ![]() 4240MC ![]() 4233C ![]() 4234C ![]() 4235C ![]() 4236C ![]() 4237C ![]() 4238C ![]() 4239C ![]() 4247C ![]() 4248C ![]() 4249C ![]() 4250C ![]() 4251C ![]() 4252C ![]() 4253C ![]() 4254C ![]() 4255C ![]() 6ff4C 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 | |
電子顕微鏡画像生データ | ![]() Data size: 2.8 TB Data #1: aligned and summed micrograph stack of human Bact spliceosome [micrographs - single frame] Data #2: aligned, dose-weighted and summed micrograph stack of human Bact spliceosome [micrographs - single frame]) |
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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 , 17種, 18分子 13ABCDLOQRVty0Ufmq
+RNA鎖 , 4種, 4分子 256Z
+Splicing factor 3A subunit ... , 3種, 3分子 79p
+Splicing factor 3B subunit ... , 5種, 6分子 8uvxzN
+Pre-mRNA-processing factor ... , 2種, 5分子 EGHIJ
+Pre-mRNA-splicing factor ... , 5種, 5分子 PKMTw
+Serine/arginine repetitive matrix protein ... , 2種, 2分子 SY
+Peptidyl-prolyl cis-trans isomerase ... , 2種, 2分子 so
+U5 small nuclear ribonucleoprotein ... , 2種, 2分子 Fr
+U2 small nuclear ribonucleoprotein ... , 2種, 2分子 WX
+Small nuclear ribonucleoprotein ... , 6種, 12分子 ahbicjdkelgn
+非ポリマー , 5種, 20分子 








-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 Bact spliceosome / タイプ: COMPLEX / Entity ID: #1-#50 / 由来: NATURAL |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
緩衝液 | pH: 7.6 |
試料 | 包埋: YES / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: Quantifoil R3.5/1 |
EM embedding | Material: ice |
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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 40 e/Å2 / 検出モード: INTEGRATING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) |
画像スキャン | サンプリングサイズ: 14 µm / 横: 4096 / 縦: 4096 |
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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 ONLY | ||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||
3次元再構成 | 解像度: 4.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 165853 / 対称性のタイプ: POINT |