グアノシン三リン酸 / リボ核酸 / RNA (> 10) / RNA (> 100) / U5 small nuclear ribonucleoprotein 200 kDa helicase / Pre-mRNA-processing factor 6 / CD2 antigen cytoplasmic tail-binding protein 2 / Small nuclear ribonucleoprotein-associated proteins B and B' / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein F ...グアノシン三リン酸 / リボ核酸 / RNA (> 10) / RNA (> 100) / U5 small nuclear ribonucleoprotein 200 kDa helicase / Pre-mRNA-processing factor 6 / CD2 antigen cytoplasmic tail-binding protein 2 / Small nuclear ribonucleoprotein-associated proteins B and B' / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein F / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein Sm D1 / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein Sm D3 / 116 kDa U5 small nuclear ribonucleoprotein component / Pre-mRNA-processing-splicing factor 8 / U5 small nuclear ribonucleoprotein 40 kDa protein / U5 small nuclear ribonucleoprotein TSSC4 類似検索 - 構成要素
H2020 Marie Curie Actions of the European Commission
101028744
European Union
引用
ジャーナル: Nat Struct Mol Biol / 年: 2024 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.
5: U5 snRNA A: Pre-mRNA-processing-splicing factor 8 B: U5 small nuclear ribonucleoprotein 200 kDa helicase C: 116 kDa U5 small nuclear ribonucleoprotein component D: U5 small nuclear ribonucleoprotein 40 kDa protein F: Pre-mRNA-processing factor 6 G: CD2 antigen cytoplasmic tail-binding protein 2 H: Protein TSSC4 a: Small nuclear ribonucleoprotein Sm D1 b: Small nuclear ribonucleoprotein-associated proteins B and B' c: Small nuclear ribonucleoprotein Sm D2 d: Small nuclear ribonucleoprotein Sm D3 e: Small nuclear ribonucleoprotein E f: Small nuclear ribonucleoprotein F g: Small nuclear ribonucleoprotein G ヘテロ分子