Single particle reconstruction
10.0Å resolution

Structure of the yeast spliceosome immediately after branching. 3D class containing helicase module.

Map released:
Last modified:
Overview of EMD-4057
Source organism: Saccharomyces cerevisiae [4932]
Fitted atomic model: 5lj5
Related EM entries by publication: EMD-4055, EMD-4056, EMD-4058, EMD-4059
Primary publication:
Cryo-EM structure of the spliceosome immediately after branching.
Galej WP, Wilkinson ME, Fica SM, Oubridge C, Newman AJ, Nagai K
Nature 537 197-201 (2016)
PMID: 27459055

Function and Biology Details

Sample name: Spliceosome immediately after branching
Nucleic acids: U5 snRNA (small nuclear RNA), Exon 1 (5' exon) of UBC4 pre-mRNA, Intron of UBC4 pre-mRNA, U2 snRNA (small nuclear RNA), U6 snRNA (small nuclear RNA)
Proteins: Spliceosome immediately after branching, Pre-mRNA-splicing factor 8, Pre-mRNA-splicing helicase BRR2, Protein CWC16, Pre-mRNA-splicing factor CWC25, Pre-mRNA-splicing factor SNU114, Pre-mRNA-splicing factor ISY1, CWC22, Pre-mRNA-splicing factor PRP46, Pre-mRNA-processing protein 45, Pre-mRNA-splicing factor BUD31, Pre-mRNA-splicing factor CWC2, Pre-mRNA-splicing factor SLT11, Pre-mRNA-splicing factor CEF1, CWC15, Pre-mRNA-splicing factor CWC21, Pre-mRNA-splicing factor CLF1, Pre-mRNA-splicing factor SYF1, Small nuclear ribonucleoprotein-associated protein B, Small nuclear ribonucleoprotein Sm D3, Small nuclear ribonucleoprotein E, Small nuclear ribonucleoprotein F, Small nuclear ribonucleoprotein G, Small nuclear ribonucleoprotein Sm D1, Small nuclear ribonucleoprotein Sm D2, U2 small nuclear ribonucleoprotein A', U2 small nuclear ribonucleoprotein B'', Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP16, Pre-mRNA-processing factor 19, Pre-mRNA-splicing factor SNT309, unknown

Experimental Information Details

Resolution: 10.0Å
Resolution method: FSC 0.143 CUT-OFF
Reconstruction software: RELION
Detector: GATAN K2 QUANTUM (4k x 4k)