7DCQ

cryo-EM structure of the DEAH-box helicase Prp2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mechanism of spliceosome remodeling by the ATPase/helicase Prp2 and its coactivator Spp2.

Bai, R.Wan, R.Yan, C.Jia, Q.Lei, J.Shi, Y.

(2021) Science 371

  • DOI: https://doi.org/10.1126/science.abe8863
  • Primary Citation of Related Structures:  
    7DCO, 7DCP, 7DCQ, 7DCR, 7DD3

  • PubMed Abstract: 

    Spliceosome remodeling, executed by conserved adenosine triphosphatase (ATPase)/helicases including Prp2, enables precursor messenger RNA (pre-mRNA) splicing. However, the structural basis for the function of the ATPase/helicases remains poorly understood. Here, we report atomic structures of Prp2 in isolation, Prp2 complexed with its coactivator Spp2, and Prp2-loaded activated spliceosome and the results of structure-guided biochemical analysis. Prp2 weakly associates with the spliceosome and cannot function without Spp2, which stably associates with Prp2 and anchors on the spliceosome, thus tethering Prp2 to the activated spliceosome and allowing Prp2 to function. Pre-mRNA is loaded into a featured channel between the N and C halves of Prp2, where Leu 536 from the N half and Arg 844 from the C half prevent backward sliding of pre-mRNA toward its 5'-end. Adenosine 5'-triphosphate binding and hydrolysis trigger interdomain movement in Prp2, which drives unidirectional stepwise translocation of pre-mRNA toward its 3'-end. These conserved mechanisms explain the coupling of spliceosome remodeling to pre-mRNA splicing.


  • Organizational Affiliation

    Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou 310024, Zhejiang Province, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PRP2 isoform 1A [auth x]876Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: PRP2GI526_G0005089PACBIOSEQ_LOCUS5743
EC: 3.6.4.13
UniProt
Find proteins for P20095 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P20095 
Go to UniProtKB:  P20095
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20095
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31930059

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-06
    Type: Initial release
  • Version 1.1: 2021-01-27
    Changes: Database references
  • Version 1.2: 2024-03-27
    Changes: Data collection, Database references