+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8i0r | ||||||
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タイトル | The cryo-EM structure of human Bact-I complex | ||||||
要素 |
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キーワード | SPLICING / spliceosome / Bact-I complex / RNA splicing / PRP2 / activation | ||||||
機能・相同性 | 機能・相同性情報 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 / 3'-5' RNA helicase activity ...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 / 3'-5' RNA helicase activity / U7 snRNP / generation of catalytic spliceosome for first transesterification step / B-WICH complex / regulation of vitamin D receptor signaling pathway / histone pre-mRNA 3'end processing complex / cis assembly of pre-catalytic spliceosome / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / miRNA processing / protein methylation / splicing factor binding / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / U12-type spliceosomal complex / methylosome / nuclear retinoic acid receptor binding / 7-methylguanosine cap hypermethylation / positive regulation of androgen receptor activity / Prp19 complex / poly(A) binding / U1 snRNP binding / pICln-Sm protein complex / mRNA 3'-end processing / blastocyst formation / sno(s)RNA-containing ribonucleoprotein complex / snRNP binding / U2-type catalytic step 1 spliceosome / RNA splicing, via transesterification reactions / small nuclear ribonucleoprotein complex / pre-mRNA binding / regulation of mRNA splicing, via spliceosome / C2H2 zinc finger domain binding / SMN-Sm protein complex / telomerase RNA binding / spliceosomal tri-snRNP complex / telomerase holoenzyme complex / U2-type spliceosomal complex / U2-type precatalytic spliceosome / positive regulation by host of viral transcription / mRNA cis splicing, via spliceosome / P granule / positive regulation of vitamin D receptor signaling pathway / transcription regulator inhibitor activity / commitment complex / U2-type prespliceosome assembly / nuclear vitamin D receptor binding / Transport of Mature mRNA derived from an Intron-Containing Transcript / U2-type catalytic step 2 spliceosome / Notch binding / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / U4 snRNP / positive regulation of mRNA splicing, via spliceosome / RUNX3 regulates NOTCH signaling / U2 snRNP / RHOBTB1 GTPase cycle / SAGA complex / NOTCH4 Intracellular Domain Regulates Transcription / Basigin interactions / RNA Polymerase II Transcription Termination / U1 snRNP / positive regulation of transcription by RNA polymerase III / pattern recognition receptor activity / NOTCH3 Intracellular Domain Regulates Transcription / ubiquitin-ubiquitin ligase activity / positive regulation of neurogenesis / WD40-repeat domain binding / U2-type prespliceosome / nuclear androgen receptor binding / precatalytic spliceosome / K63-linked polyubiquitin modification-dependent protein binding / cyclosporin A binding / positive regulation of transcription by RNA polymerase I / Notch-HLH transcription pathway / positive regulation of transforming growth factor beta receptor signaling pathway / Formation of paraxial mesoderm / mRNA Splicing - Minor Pathway / spliceosomal complex assembly / SMAD binding / regulation of RNA splicing / mRNA 3'-splice site recognition / protein peptidyl-prolyl isomerization / blastocyst development / protein localization to nucleus / spliceosomal tri-snRNP complex assembly / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / U5 snRNA binding / U5 snRNP / transcription-coupled nucleotide-excision repair / RHOBTB2 GTPase cycle / positive regulation of G1/S transition of mitotic cell cycle / positive regulation of viral genome replication 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) unidentified adenovirus (ウイルス) | ||||||
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: 3 Å | ||||||
データ登録者 | Zhan, X. / Lu, Y. / Shi, Y. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2024 タイトル: Molecular basis for the activation of human spliceosome. 著者: Xiechao Zhan / Yichen Lu / Yigong Shi / 要旨: The spliceosome executes pre-mRNA splicing through four sequential stages: assembly, activation, catalysis, and disassembly. Activation of the spliceosome, namely remodeling of the pre-catalytic ...The spliceosome executes pre-mRNA splicing through four sequential stages: assembly, activation, catalysis, and disassembly. Activation of the spliceosome, namely remodeling of the pre-catalytic spliceosome (B complex) into the activated spliceosome (B complex) and the catalytically activated spliceosome (B complex), involves major flux of protein components and structural rearrangements. Relying on a splicing inhibitor, we have captured six intermediate states between the B and B complexes: pre-B, B-I, B-II, B-III, B-IV, and post-B. Their cryo-EM structures, together with an improved structure of the catalytic step I spliceosome (C complex), reveal how the catalytic center matures around the internal stem loop of U6 snRNA, how the branch site approaches 5'-splice site, how the RNA helicase PRP2 rearranges to bind pre-mRNA, and how U2 snRNP undergoes remarkable movement to facilitate activation. We identify a previously unrecognized key role of PRP2 in spliceosome activation. Our study recapitulates a molecular choreography of the human spliceosome during its catalytic activation. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8i0r.cif.gz | 3 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8i0r.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 8i0r.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
文書・要旨 | 8i0r_validation.pdf.gz | 2.1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8i0r_full_validation.pdf.gz | 2.5 MB | 表示 | |
XML形式データ | 8i0r_validation.xml.gz | 388.7 KB | 表示 | |
CIF形式データ | 8i0r_validation.cif.gz | 643.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/i0/8i0r ftp://data.pdbj.org/pub/pdb/validation_reports/i0/8i0r | HTTPS FTP |
-関連構造データ
関連構造データ | 35107MC 8i0pC 8i0sC 8i0tC 8i0uC 8i0vC 8i0wC 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
+タンパク質 , 17種, 18分子 ACJKLNPQRTWXYZ79ma
+RNA鎖 , 4種, 4分子 BFGH
+U5 small nuclear ribonucleoprotein ... , 2種, 2分子 DE
+Pre-mRNA-splicing factor ... , 4種, 4分子 IOSV
+Serine/arginine repetitive matrix protein ... , 2種, 2分子 U8
+Splicing factor 3B subunit ... , 6種, 6分子 132465
+U2 small nuclear ribonucleoprotein ... , 2種, 2分子 po
+Splicing factor 3A subunit ... , 3種, 3分子 wuv
+Peptidyl-prolyl cis-trans isomerase ... , 2種, 2分子 yz
+Small nuclear ribonucleoprotein ... , 6種, 12分子 hcidlgkfjenb
+非ポリマー , 4種, 15分子
+詳細
-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 |
-試料調製
構成要素 | 名称: The human Bact-I complex / タイプ: COMPLEX Entity ID: #1-#5, #21, #11, #25, #6, #8, #26-#27, #10, #12, #15, #28-#29, #16, #9, #30-#32, #24, #23, #33-#35, #17, #19, #36-#47, #7, #48, #14, #13, #20, #18, #22 由来: NATURAL |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.9 |
試料 | 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 / 湿度: 100 % |
-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): 2000 nm / 最小 デフォーカス(公称値): 1400 nm |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.17.1_3660: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 136665 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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