+
データを開く
-
基本情報
登録情報 | ![]() | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | The cryo-EM structure of human pre-C*-I complex | |||||||||
![]() | The cryo-EM map of human pre-C*-I complex | |||||||||
![]() |
| |||||||||
![]() | spliceosome / C* complex / RNA splicing / PRP22 / exon ligation / FAM192A / SPLICING | |||||||||
機能・相同性 | ![]() exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / negative regulation of proteasomal protein catabolic process / regulation of translation at postsynapse, modulating synaptic transmission / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex ...exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / negative regulation of proteasomal protein catabolic process / regulation of translation at postsynapse, modulating synaptic transmission / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / intracellular mRNA localization / U7 snRNA binding / negative regulation of excitatory postsynaptic potential / histone pre-mRNA DCP binding / U7 snRNP / 3'-5' RNA helicase activity / 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 / regulation of vitamin D receptor signaling pathway / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / regulation of mRNA processing / Deadenylation of mRNA / nuclear retinoic acid receptor binding / embryonic brain development / protein methylation / 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 / 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 / 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 / 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 / Notch-HLH transcription pathway / Formation of paraxial mesoderm / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / spliceosomal complex assembly / mitotic G2 DNA damage checkpoint signaling / associative learning / mRNA Splicing - Minor Pathway / spliceosomal tri-snRNP complex assembly / blastocyst development / Prp19 complex / protein K63-linked ubiquitination / U5 snRNA binding 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: 3.6 Å | |||||||||
![]() | Zhan X / Lu Y | |||||||||
資金援助 | ![]()
| |||||||||
![]() | ![]() タイトル: Mechanism of exon ligation by human spliceosome. 著者: Xiechao Zhan / Yichen Lu / Xiaofeng Zhang / Chuangye Yan / Yigong Shi / ![]() 要旨: Pre-mRNA splicing involves two sequential reactions: branching and exon ligation. The C complex after branching undergoes remodeling to become the C complex, which executes exon ligation. Here, we ...Pre-mRNA splicing involves two sequential reactions: branching and exon ligation. The C complex after branching undergoes remodeling to become the C complex, which executes exon ligation. Here, we report cryo-EM structures of two intermediate human spliceosomal complexes, pre-C-I and pre-C-II, both at 3.6 Å. In both structures, the 3' splice site is already docked into the active site, the ensuing 3' exon sequences are anchored on PRP8, and the step II factor FAM192A contacts the duplex between U2 snRNA and the branch site. In the transition of pre-C-I to pre-C-II, the step II factors Cactin, FAM32A, PRKRIP1, and SLU7 are recruited. Notably, the RNA helicase PRP22 is positioned quite differently in the pre-C-I, pre-C-II, and C complexes, suggesting a role in 3' exon binding and proofreading. Together with information on human C and C complexes, our studies recapitulate a molecular choreography of the C-to-C transition, revealing mechanistic insights into exon ligation. | |||||||||
履歴 |
|
-
構造の表示
添付画像 |
---|
-
ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 230.2 MB | ![]() | |
---|---|---|---|---|
ヘッダ (付随情報) | ![]() ![]() | 65.7 KB 65.7 KB | 表示 表示 | ![]() |
画像 | ![]() | 62.7 KB | ||
Filedesc metadata | ![]() | 20.3 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 | ![]() 7w59MC ![]() 7w5aC ![]() 7w5bC 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 ( |
---|---|
類似構造データ | 類似検索 - 機能・相同性 ![]() |
-
リンク
EMDBのページ | ![]() ![]() |
---|---|
「今月の分子」の関連する項目 |
-
マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
注釈 | The cryo-EM map of human pre-C*-I complex | ||||||||||||||||||||||||||||||||||||
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: 1.338 Å | ||||||||||||||||||||||||||||||||||||
密度 |
| ||||||||||||||||||||||||||||||||||||
対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
|
-添付データ
-
試料の構成要素
+全体 : Human pre-C*-I complex
+超分子 #1: Human pre-C*-I complex
+分子 #1: Pre-mRNA-processing-splicing factor 8
+分子 #2: 116 kDa U5 small nuclear ribonucleoprotein component
+分子 #3: U5 small nuclear ribonucleoprotein 40 kDa protein
+分子 #6: Crooked neck-like protein 1
+分子 #7: Cell division cycle 5-like protein
+分子 #8: Pre-mRNA-splicing factor SYF2
+分子 #9: Protein BUD31 homolog
+分子 #10: Pre-mRNA-splicing factor RBM22
+分子 #11: Spliceosome-associated protein CWC15 homolog
+分子 #12: SNW domain-containing protein 1
+分子 #13: Peptidyl-prolyl cis-trans isomerase-like 1
+分子 #14: Pleiotropic regulator 1
+分子 #15: Serine/arginine repetitive matrix protein 2
+分子 #16: Pre-mRNA-splicing factor CWC22 homolog
+分子 #17: Pre-mRNA-processing factor 17
+分子 #21: Small nuclear ribonucleoprotein-associated proteins B and B'
+分子 #22: PSME3-interacting protein
+分子 #23: Pre-mRNA-splicing factor SYF1
+分子 #24: Peptidyl-prolyl cis-trans isomerase E
+分子 #25: ATP-dependent RNA helicase DHX8
+分子 #26: Small nuclear ribonucleoprotein Sm D3
+分子 #27: Small nuclear ribonucleoprotein Sm D1
+分子 #28: Small nuclear ribonucleoprotein Sm D2
+分子 #29: Small nuclear ribonucleoprotein F
+分子 #30: Small nuclear ribonucleoprotein E
+分子 #31: Small nuclear ribonucleoprotein G
+分子 #32: Protein mago nashi homolog
+分子 #33: RNA-binding protein 8A
+分子 #34: Eukaryotic initiation factor 4A-III
+分子 #35: Protein CASC3
+分子 #36: RNA helicase aquarius
+分子 #37: U2 small nuclear ribonucleoprotein A'
+分子 #38: U2 small nuclear ribonucleoprotein B''
+分子 #39: Pre-mRNA-processing factor 19
+分子 #40: Pre-mRNA-splicing factor SPF27
+分子 #4: pre-mRNA
+分子 #5: pre-mRNA
+分子 #18: U5 snRNA
+分子 #19: U6 snRNA
+分子 #20: U2 snRNA
+分子 #41: INOSITOL HEXAKISPHOSPHATE
+分子 #42: GUANOSINE-5'-TRIPHOSPHATE
+分子 #43: MAGNESIUM ION
+分子 #44: ZINC ION
+分子 #45: ADENOSINE-5'-TRIPHOSPHATE
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
---|---|
![]() | 単粒子再構成法 |
試料の集合状態 | particle |
-
試料調製
緩衝液 | pH: 7.9 |
---|---|
凍結 | 凍結剤: ETHANE |
-
電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
---|---|
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: 50.0 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 / 最大 デフォーカス(公称値): 2.5 µm / 最小 デフォーカス(公称値): 1.2 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |