+
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 | |||||||||
マップデータ | The cryo-EM map of human pre-C*-I complex | |||||||||
試料 |
| |||||||||
キーワード | spliceosome / C* complex / RNA splicing / PRP22 / exon ligation / FAM192A / SPLICING | |||||||||
| 機能・相同性 | 機能・相同性情報exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / cellular response to selenite ion / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / exon-exon junction complex / selenocysteine insertion sequence binding / 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 / cellular response to selenite ion / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / exon-exon junction complex / selenocysteine insertion sequence binding / 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 / 3'-5' RNA helicase activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / generation of catalytic spliceosome for first transesterification step / U7 snRNP / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / histone pre-mRNA 3'end processing complex / regulation of vitamin D receptor signaling pathway / regulation of mRNA processing / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / Deadenylation of mRNA / negative regulation of excitatory postsynaptic potential / intracellular mRNA localization / embryonic cranial skeleton morphogenesis / alternative mRNA splicing, via spliceosome / protein methylation / poly(A) binding / 7-methylguanosine cap hypermethylation / U12-type spliceosomal complex / embryonic brain development / nuclear retinoic acid receptor binding / U1 snRNP binding / U2-type catalytic step 1 spliceosome / methylosome / pre-mRNA binding / ATP-dependent activity, acting on RNA / regulation of mRNA splicing, via spliceosome / C2H2 zinc finger domain binding / pICln-Sm protein complex / positive regulation of mRNA splicing, via spliceosome / RNA splicing, via transesterification reactions / mRNA 3'-end processing / M-decay: degradation of maternal mRNAs by maternally stored factors / sno(s)RNA-containing ribonucleoprotein complex / small nuclear ribonucleoprotein complex / SMN-Sm protein complex / spliceosomal tri-snRNP complex / host-mediated activation of viral transcription / P granule / positive regulation of vitamin D receptor signaling pathway / snRNP binding / commitment complex / U2-type precatalytic spliceosome / mRNA cis splicing, via spliceosome / oocyte development / telomerase holoenzyme complex / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / Transport of Mature mRNA derived from an Intron-Containing Transcript / Notch binding / RUNX3 regulates NOTCH signaling / telomerase RNA binding / U2-type catalytic step 2 spliceosome / U2-type prespliceosome assembly / U2-type spliceosomal complex / nuclear vitamin D receptor binding / NOTCH4 Intracellular Domain Regulates Transcription / U1 snRNP / RNA Polymerase II Transcription Termination / U2 snRNP / U4 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / U2-type prespliceosome / positive regulation of neurogenesis / protein peptidyl-prolyl isomerization / inner cell mass cell proliferation / K63-linked polyubiquitin modification-dependent protein binding / nuclear androgen receptor binding / ubiquitin-ubiquitin ligase activity / cyclosporin A binding / precatalytic spliceosome / Notch-HLH transcription pathway / Formation of paraxial mesoderm / lipid biosynthetic process / WD40-repeat domain binding / regulation of alternative mRNA splicing, via spliceosome / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / mitotic G2 DNA damage checkpoint signaling / mRNA Splicing - Minor Pathway / spliceosomal complex assembly / exploration behavior / spliceosomal tri-snRNP complex assembly / Prp19 complex / U5 snRNP / associative learning / U5 snRNA binding / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト) / unidentified adenovirus (ウイルス) | |||||||||
| 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 | |||||||||
データ登録者 | Zhan X / Lu Y | |||||||||
| 資金援助 | 中国, 1件
| |||||||||
引用 | ジャーナル: Mol Cell / 年: 2022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 | emd_32317.map.gz | 230.2 MB | EMDBマップデータ形式 | |
|---|---|---|---|---|
| ヘッダ (付随情報) | emd-32317-v30.xml emd-32317.xml | 65.7 KB 65.7 KB | 表示 表示 | EMDBヘッダ |
| 画像 | emd_32317.png | 62.7 KB | ||
| Filedesc metadata | emd-32317.cif.gz | 20.3 KB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-32317 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-32317 | 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 F&H 検索 |
-
リンク
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
|---|---|
| 「今月の分子」の関連する項目 |
-
マップ
| ファイル | ダウンロード / ファイル: emd_32317.map.gz / 形式: CCP4 / 大きさ: 244.1 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
|---|---|
解析 | 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: FIELD EMISSION GUN |
| 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 |
ムービー
コントローラー
万見について




キーワード
Homo sapiens (ヒト)
unidentified adenovirus (ウイルス)
データ登録者
中国, 1件
引用


































Z (Sec.)
Y (Row.)
X (Col.)























解析
FIELD EMISSION GUN
