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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Structure of the recycling U5 snRNP bound to chaperones CD2BP2 and TSSC4 (State 2, Map 2) | |||||||||
![]() | Sharpened map | |||||||||
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![]() | U5 snRNP / CD2BP2 / TSSC4 / spliceosome / splicing | |||||||||
機能・相同性 | ![]() RNA localization / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 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) ...RNA localization / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 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) / protein methylation / U12-type spliceosomal complex / 7-methylguanosine cap hypermethylation / RNA splicing, via transesterification reactions / U1 snRNP binding / sno(s)RNA-containing ribonucleoprotein complex / methylosome / pICln-Sm protein complex / U2-type catalytic step 1 spliceosome / snRNP binding / small nuclear ribonucleoprotein complex / SMN-Sm protein complex / P granule / spliceosomal tri-snRNP complex / U2-type precatalytic spliceosome / telomerase holoenzyme complex / U2-type spliceosomal complex / telomerase RNA binding / commitment complex / U2-type prespliceosome assembly / U2-type catalytic step 2 spliceosome / U4 snRNP / U2 snRNP / RNA Polymerase II Transcription Termination / U1 snRNP / U2-type prespliceosome / K63-linked polyubiquitin modification-dependent protein binding / precatalytic spliceosome / spliceosomal complex assembly / mRNA Splicing - Minor Pathway / molecular sequestering activity / spliceosomal tri-snRNP complex assembly / U5 snRNA binding / U5 snRNP / U2 snRNA binding / U6 snRNA binding / pre-mRNA intronic binding / spliceosomal snRNP assembly / RNA processing / ribonucleoprotein complex binding / Cajal body / U1 snRNA binding / U4/U6 x U5 tri-snRNP complex / catalytic step 2 spliceosome / mRNA Splicing - Major Pathway / RNA splicing / response to cocaine / spliceosomal complex / helicase activity / mRNA splicing, via spliceosome / fibrillar center / cellular response to xenobiotic stimulus / mRNA processing / osteoblast differentiation / cellular response to tumor necrosis factor / cellular response to lipopolysaccharide / snRNP Assembly / protein-macromolecule adaptor activity / SARS-CoV-2 modulates host translation machinery / RNA helicase activity / nuclear speck / nuclear body / cilium / ciliary basal body / RNA helicase / intracellular membrane-bounded organelle / GTPase activity / centrosome / GTP binding / protein-containing complex binding / enzyme binding / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / RNA binding / extracellular exosome / nucleoplasm / ATP binding / identical protein binding / nucleus / membrane / plasma membrane / cytosol / cytoplasm 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: 3.2 Å | |||||||||
![]() | Riabov Bassat D / Plaschka C / Vorlaender MK | |||||||||
資金援助 | European Union, 2件
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![]() | ![]() タイトル: Structural basis of human U5 snRNP late biogenesis and recycling. 著者: Daria Riabov Bassat / Supapat Visanpattanasin / Matthias K Vorländer / Laura Fin / Alexander W Phillips / Clemens Plaschka / ![]() 要旨: Pre-mRNA splicing by the spliceosome requires the biogenesis and recycling of its small nuclear ribonucleoprotein (snRNP) complexes, which are consumed in each round of splicing. The human U5 snRNP ...Pre-mRNA splicing by the spliceosome requires the biogenesis and recycling of its small nuclear ribonucleoprotein (snRNP) complexes, which are consumed in each round of splicing. The human U5 snRNP is the ~1 MDa 'heart' of the spliceosome and is recycled through an unknown mechanism involving major architectural rearrangements and the dedicated chaperones CD2BP2 and TSSC4. Late steps in U5 snRNP biogenesis similarly involve these chaperones. Here we report cryo-electron microscopy structures of four human U5 snRNP-CD2BP2-TSSC4 complexes, revealing how a series of molecular events primes the U5 snRNP to generate the ~2 MDa U4/U6.U5 tri-snRNP, the largest building block of the spliceosome. | |||||||||
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マップデータ | ![]() | 168.1 MB | ![]() | |
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FSC (解像度算出) | ![]() | 11.8 KB | 表示 | ![]() |
画像 | ![]() | 66.8 KB | ||
Filedesc metadata | ![]() | 11.9 KB | ||
その他 | ![]() ![]() ![]() | 89.9 MB 165.4 MB 165.4 MB | ||
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文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 20.6 KB | 表示 | |
CIF形式データ | ![]() | 26.8 KB | 表示 | |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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注釈 | Sharpened map | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.2408 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
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試料の構成要素
+全体 : Structure of the recycling U5 snRNP bound to chaperones CD2BP2 an...
+超分子 #1: Structure of the recycling U5 snRNP bound to chaperones CD2BP2 an...
+分子 #1: U5 snRNA
+分子 #2: Pre-mRNA-processing-splicing factor 8
+分子 #3: U5 small nuclear ribonucleoprotein 200 kDa helicase
+分子 #4: 116 kDa U5 small nuclear ribonucleoprotein component
+分子 #5: U5 small nuclear ribonucleoprotein 40 kDa protein
+分子 #6: Pre-mRNA-processing factor 6
+分子 #7: CD2 antigen cytoplasmic tail-binding protein 2
+分子 #8: Protein TSSC4
+分子 #9: Small nuclear ribonucleoprotein Sm D1
+分子 #10: Small nuclear ribonucleoprotein-associated proteins B and B'
+分子 #11: Small nuclear ribonucleoprotein Sm D2
+分子 #12: Small nuclear ribonucleoprotein Sm D3
+分子 #13: Small nuclear ribonucleoprotein E
+分子 #14: Small nuclear ribonucleoprotein F
+分子 #15: Small nuclear ribonucleoprotein G
+分子 #16: MAGNESIUM ION
+分子 #17: GUANOSINE-5'-TRIPHOSPHATE
-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 |
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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: FEI FALCON IV (4k x 4k) 平均電子線量: 40.0 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): 2.0 µm / 最小 デフォーカス(公称値): 0.5 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 19393 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |