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基本情報
登録情報 | データベース: EMDB / ID: EMD-6891 | ||||||||||||
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タイトル | Cryo-EM structure of a human activated spliceosome (early Bact) at 4.9 angstrom. | ||||||||||||
![]() | Cryo-EM structure of the human activated spliceosome (early Bact) at 4.8 angstrom | ||||||||||||
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機能・相同性 | ![]() RES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / post-mRNA release spliceosomal complex / regulation of retinoic acid receptor signaling pathway / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP ...RES complex / negative regulation of chemokine-mediated signaling pathway / snoRNA splicing / U11/U12 snRNP / post-mRNA release spliceosomal complex / regulation of retinoic acid receptor signaling pathway / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 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 / splicing factor binding / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / protein methylation / U12-type spliceosomal complex / methylosome / nuclear retinoic acid receptor binding / 7-methylguanosine cap hypermethylation / Prp19 complex / snRNP binding / U1 snRNP binding / pICln-Sm protein complex / blastocyst formation / RNA splicing, via transesterification reactions / small nuclear ribonucleoprotein complex / U2-type catalytic step 1 spliceosome / sno(s)RNA-containing ribonucleoprotein complex / regulation of mRNA splicing, via spliceosome / SMN-Sm protein complex / spliceosomal tri-snRNP complex / P granule / telomerase holoenzyme complex / mRNA cis splicing, via spliceosome / positive regulation by host of viral transcription / telomerase RNA binding / U2-type precatalytic spliceosome / U2-type spliceosomal complex / transcription regulator inhibitor activity / commitment complex / positive regulation of vitamin D receptor signaling pathway / nuclear vitamin D receptor binding / U2-type prespliceosome assembly / U2-type catalytic step 2 spliceosome / Notch binding / positive regulation of mRNA splicing, via spliceosome / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / U4 snRNP / RUNX3 regulates NOTCH signaling / U2 snRNP / RNA Polymerase II Transcription Termination / SAGA complex / NOTCH4 Intracellular Domain Regulates Transcription / positive regulation of transcription by RNA polymerase III / U1 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / pattern recognition receptor activity / WD40-repeat domain binding / Cajal body / positive regulation of neurogenesis / U2-type prespliceosome / nuclear androgen receptor binding / K63-linked polyubiquitin modification-dependent protein binding / positive regulation of G1/S transition of mitotic cell cycle / precatalytic spliceosome / retinoic acid receptor signaling pathway / 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 / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / SMAD binding / regulation of RNA splicing / mRNA 3'-splice site recognition / 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 / U2 snRNA binding / RNA processing / U6 snRNA binding / spliceosomal snRNP assembly / regulation of DNA repair / pre-mRNA intronic binding / cellular response to retinoic acid / negative regulation of canonical NF-kappaB signal transduction / U1 snRNA binding / antiviral innate immune response / U4/U6 x U5 tri-snRNP complex / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / RNA splicing 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: 4.9 Å | ||||||||||||
![]() | Zhang X / Yan C / Zhan X / Li L / Lei J / Shi Y | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure of the human activated spliceosome in three conformational states. 著者: Xiaofeng Zhang / Chuangye Yan / Xiechao Zhan / Lijia Li / Jianlin Lei / Yigong Shi / ![]() 要旨: During each cycle of pre-mRNA splicing, the pre-catalytic spliceosome (B complex) is converted into the activated spliceosome (B complex), which has a well-formed active site but cannot proceed to ...During each cycle of pre-mRNA splicing, the pre-catalytic spliceosome (B complex) is converted into the activated spliceosome (B complex), which has a well-formed active site but cannot proceed to the branching reaction. Here, we present the cryo-EM structure of the human B complex in three distinct conformational states. The EM map allows atomic modeling of nearly all protein components of the U2 small nuclear ribonucleoprotein (snRNP), including three of the SF3a complex and seven of the SF3b complex. The structure of the human B complex contains 52 proteins, U2, U5, and U6 small nuclear RNA (snRNA), and a pre-mRNA. Three distinct conformations have been captured, representing the early, mature, and late states of the human B complex. These complexes differ in the orientation of the Switch loop of Prp8, the splicing factors RNF113A and NY-CO-10, and most components of the NineTeen complex (NTC) and the NTC-related complex. Analysis of these three complexes and comparison with the B and C complexes reveal an ordered flux of components in the B-to-B and the B-to-B transitions, which ultimately prime the active site for the branching reaction. | ||||||||||||
履歴 |
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構造の表示
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構造ビューア | EMマップ: ![]() ![]() ![]() |
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マップデータ | ![]() | 226.9 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 62.1 KB 62.1 KB | 表示 表示 | ![]() |
画像 | ![]() | 163.3 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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「今月の分子」の関連する項目 |
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注釈 | Cryo-EM structure of the human activated spliceosome (early Bact) at 4.8 angstrom | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.338 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 : early Bact spliceosome
+超分子 #1: early Bact spliceosome
+分子 #1: Pre-mRNA-processing-splicing factor 8
+分子 #3: 116 kDa U5 small nuclear ribonucleoprotein component
+分子 #4: U5 small nuclear ribonucleoprotein 200 kDa helicase
+分子 #5: U5 small nuclear ribonucleoprotein 40 kDa protein
+分子 #6: Small nuclear ribonucleoprotein Sm D3
+分子 #7: Small nuclear ribonucleoprotein-associated proteins B and B'
+分子 #8: Small nuclear ribonucleoprotein Sm D1
+分子 #9: Small nuclear ribonucleoprotein Sm D2
+分子 #10: Small nuclear ribonucleoprotein F
+分子 #11: Small nuclear ribonucleoprotein E
+分子 #12: Small nuclear ribonucleoprotein G
+分子 #16: U2 small nuclear ribonucleoprotein A'
+分子 #17: U2 small nuclear ribonucleoprotein B''
+分子 #18: Splicing factor 3A subunit 3
+分子 #19: Splicing factor 3A subunit 1
+分子 #20: Splicing factor 3A subunit 2
+分子 #21: Splicing factor 3B subunit 1
+分子 #22: Splicing factor 3B subunit 2
+分子 #23: Splicing factor 3B subunit 3
+分子 #24: Splicing factor 3B subunit 4
+分子 #25: Splicing factor 3B subunit 6
+分子 #26: PHD finger-like domain-containing protein 5A
+分子 #27: Splicing factor 3B subunit 5
+分子 #28: Crooked neck-like protein 1
+分子 #29: Cell division cycle 5-like protein
+分子 #30: RING finger protein 113A
+分子 #31: Spliceosome-associated protein CWC15 homolog
+分子 #32: Skip
+分子 #33: Pleiotropic regulator 1
+分子 #34: Pre-mRNA-splicing factor CWC22 homolog
+分子 #35: Smad nuclear-interacting protein 1
+分子 #36: RNA-binding motif protein, X-linked 2
+分子 #37: BUD13 homolog
+分子 #38: Peptidyl-prolyl cis-trans isomerase CWC27 homolog
+分子 #39: Pre-mRNA-splicing factor ATP-dependent RNA helicase DHX16
+分子 #2: U5 snRNA
+分子 #13: U6 snRNA
+分子 #14: pre-mRNA
+分子 #15: U2 snRNA
+分子 #40: INOSITOL HEXAKISPHOSPHATE
+分子 #41: GUANOSINE-5'-TRIPHOSPHATE
+分子 #42: MAGNESIUM ION
+分子 #43: ZINC ION
-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
緩衝液 | pH: 7.9 / 詳細: 20 mM HEPES-KOH, pH 7.9, 150 mM NaCl, 1.5 mM MgCl2 |
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凍結 | 凍結剤: 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: SUPER-RESOLUTION / 平均電子線量: 48.0 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 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |