+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 6qx9 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| タイトル | Structure of a human fully-assembled precatalytic spliceosome (pre-B complex). | |||||||||
要素 |
| |||||||||
キーワード | SPLICING / RNP complex / RNA / protein / spliceosome | |||||||||
| 機能・相同性 | 機能・相同性情報mRNA Splicing - Minor Pathway / negative regulation of protein refolding / mRNA Splicing - Major Pathway / Lsm2-8 complex / U6 snRNA 3'-end binding / spliceosomal snRNP complex / ribonucleoprotein complex localization / U4atac snRNP / positive regulation of cytotoxic T cell differentiation / maturation of 5S rRNA ...mRNA Splicing - Minor Pathway / negative regulation of protein refolding / mRNA Splicing - Major Pathway / Lsm2-8 complex / U6 snRNA 3'-end binding / spliceosomal snRNP complex / ribonucleoprotein complex localization / U4atac snRNP / positive regulation of cytotoxic T cell differentiation / maturation of 5S rRNA / RNA localization / U4atac snRNA binding / mRNA decay by 5' to 3' exoribonuclease / Lsm1-7-Pat1 complex / R-loop processing / positive regulation of hippo signaling / regulation of mitotic cell cycle spindle assembly checkpoint / U6 snRNP / U11/U12 snRNP / box C/D sno(s)RNA binding / PH domain binding / regulation of ATP-dependent activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / dense fibrillar component / 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 / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / B-WICH complex / box C/D methylation guide snoRNP complex / protein methylation / U4/U6 snRNP / U12-type spliceosomal complex / 7-methylguanosine cap hypermethylation / U1 snRNP binding / methylosome / pICln-Sm protein complex / U2-type catalytic step 1 spliceosome / RNA splicing, via transesterification reactions / snRNP binding / positive regulation of mRNA splicing, via spliceosome / small nuclear ribonucleoprotein complex / sno(s)RNA-containing ribonucleoprotein complex / splicing factor binding / SMN-Sm protein complex / spliceosomal tri-snRNP complex / P granule / U4 snRNA binding / telomerase holoenzyme complex / U2-type precatalytic spliceosome / commitment complex / mRNA cis splicing, via spliceosome / telomerase RNA binding / U2-type prespliceosome assembly / U2-type spliceosomal complex / U2-type catalytic step 2 spliceosome / box C/D snoRNP assembly / U2 snRNP / P-body assembly / RNA Polymerase II Transcription Termination / SAGA complex / U1 snRNP / U4 snRNP / negative regulation of chaperone-mediated autophagy / U2-type prespliceosome / U3 snoRNA binding / tRNA processing / positive regulation of transcription by RNA polymerase III / pre-mRNA 5'-splice site binding / rRNA modification in the nucleus and cytosol / K63-linked polyubiquitin modification-dependent protein binding / nuclear androgen receptor binding / precatalytic spliceosome / mRNA 5'-splice site recognition / regulation of RNA splicing / mRNA catabolic process / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / mRNA 3'-splice site recognition / positive regulation of transcription by RNA polymerase I / negative regulation of mRNA splicing, via spliceosome / nuclear-transcribed mRNA catabolic process / MLL1 complex / spliceosomal tri-snRNP complex assembly / U5 snRNA binding / protein deubiquitination / U5 snRNP / U2 snRNA binding / U6 snRNA binding / pre-mRNA intronic binding / spliceosomal snRNP assembly / single fertilization / cellular response to transforming growth factor beta stimulus / ribonucleoprotein complex binding / Major pathway of rRNA processing in the nucleolus and cytosol / RNA processing 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト)![]() Human adenovirus 2 (ヒトアデノウイルス) | |||||||||
| 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: 3.28 Å | |||||||||
データ登録者 | Charenton, C. / Wilkinson, M.E. / Nagai, K. | |||||||||
| 資金援助 | 英国, 2件
| |||||||||
引用 | ジャーナル: Science / 年: 2019タイトル: Mechanism of 5' splice site transfer for human spliceosome activation. 著者: Clément Charenton / Max E Wilkinson / Kiyoshi Nagai / ![]() 要旨: The prespliceosome, comprising U1 and U2 small nuclear ribonucleoproteins (snRNPs) bound to the precursor messenger RNA 5' splice site (5'SS) and branch point sequence, associates with the U4/U6.U5 ...The prespliceosome, comprising U1 and U2 small nuclear ribonucleoproteins (snRNPs) bound to the precursor messenger RNA 5' splice site (5'SS) and branch point sequence, associates with the U4/U6.U5 tri-snRNP to form the fully assembled precatalytic pre-B spliceosome. Here, we report cryo-electron microscopy structures of the human pre-B complex captured before U1 snRNP dissociation at 3.3-angstrom core resolution and the human tri-snRNP at 2.9-angstrom resolution. U1 snRNP inserts the 5'SS-U1 snRNA helix between the two RecA domains of the Prp28 DEAD-box helicase. Adenosine 5'-triphosphate-dependent closure of the Prp28 RecA domains releases the 5'SS to pair with the nearby U6 ACAGAGA-box sequence presented as a mobile loop. The structures suggest that formation of the 5'SS-ACAGAGA helix triggers remodeling of an intricate protein-RNA network to induce Brr2 helicase relocation to its loading sequence in U4 snRNA, enabling Brr2 to unwind the U4/U6 snRNA duplex to allow U6 snRNA to form the catalytic center of the spliceosome. | |||||||||
| 履歴 |
|
-
構造の表示
| ムービー |
ムービービューア |
|---|---|
| 構造ビューア | 分子: Molmil Jmol/JSmol |
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 6qx9.cif.gz | 3.2 MB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb6qx9.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 6qx9.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 | 6qx9_validation.pdf.gz | 1.9 MB | 表示 | wwPDB検証レポート |
|---|---|---|---|---|
| 文書・詳細版 | 6qx9_full_validation.pdf.gz | 2 MB | 表示 | |
| XML形式データ | 6qx9_validation.xml.gz | 353.5 KB | 表示 | |
| CIF形式データ | 6qx9_validation.cif.gz | 595.4 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/qx/6qx9 ftp://data.pdbj.org/pub/pdb/validation_reports/qx/6qx9 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 4665MC ![]() 4658C ![]() 4672C ![]() 4673C ![]() 4674C ![]() 4675C ![]() 4676C ![]() 4686C ![]() 4687C ![]() 4688C ![]() 4689C ![]() 4690C ![]() 6qw6C 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 ( |
|---|---|
| 類似構造データ | |
| 電子顕微鏡画像生データ | EMPIAR-10307 (タイトル: Human pre-B spliceosome and U4/U6.U5 tri-snRNPData size: 2.3 TB Data #1: Dataset 1 of human pre-B spliceosome; motion-corrected micrographs [micrographs - single frame] Data #2: Dataset 2 of human pre-B spliceosome; motion-corrected micrographs [micrographs - single frame] Data #3: Dataset 3 of human pre-B spliceosome; motion-corrected micrographs [micrographs - single frame] Data #4: Dataset 4 of human pre-B spliceosome; motion-corrected micrographs [micrographs - single frame] Data #5: Dataset 5 of human pre-B spliceosome; motion-corrected micrographs [micrographs - single frame] Data #6: Selected U4/U6.U5 tri-snRNP particles after Bayesian polishing [picked particles - single frame - processed] Data #7: Crude shifted preB particles [picked particles - single frame - unprocessed]) |
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
+RNA鎖 , 6種, 6分子 16I524
+U5 small nuclear ribonucleoprotein ... , 2種, 2分子 5O5B
+Splicing factor 3B subunit ... , 5種, 5分子 B4B2B5B3B1
+Small nuclear ribonucleoprotein ... , 6種, 24分子 135323435e4e1e2e411151211f2f5f4f224252121g2g5g4g
+U4/U6 small nuclear ribonucleoprotein ... , 3種, 3分子 4B4C4A
+U1 small nuclear ribonucleoprotein ... , 3種, 3分子 1K1A1C
+タンパク質 , 11種, 14分子 RX5C5X1b2b5b4b5J4D5A5DBPK
+U6 snRNA-associated Sm-like protein ... , 7種, 7分子 66676263686465
+U2 small nuclear ribonucleoprotein ... , 2種, 2分子 2B2A
+Splicing factor 3A subunit ... , 3種, 3分子 A2A3A1
+U4/U6.U5 tri-snRNP-associated protein ... , 2種, 2分子 SU
+非ポリマー , 4種, 9分子 






+詳細
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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 |
| ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 分子量 | 値: 3.0 MDa / 実験値: NO | ||||||||||||||||||||||||||||||
| 由来(天然) |
| ||||||||||||||||||||||||||||||
| 由来(組換発現) |
| ||||||||||||||||||||||||||||||
| 緩衝液 | pH: 7.9 | ||||||||||||||||||||||||||||||
| 緩衝液成分 |
| ||||||||||||||||||||||||||||||
| 試料 | 濃度: 1.4 mg/ml / 包埋: NO / 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: 400 divisions/in. / グリッドのタイプ: Quantifoil R2/2 | ||||||||||||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
|---|---|
| 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 / アライメント法: COMA FREE |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 平均露光時間: 6 sec. / 電子線照射量: 50 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
| 電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
| 画像スキャン | 動画フレーム数/画像: 40 / 利用したフレーム数/画像: 1-40 |
-
解析
| EMソフトウェア |
| ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 1130953 | ||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.28 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 86146 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT |
ムービー
コントローラー
万見について




Homo sapiens (ヒト)
Human adenovirus 2 (ヒトアデノウイルス)
英国, 2件
引用
UCSF Chimera

















PDBj























































