8RAO

Structure of Sen1-ADP.BeF3-RNA complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Mechanism of polyadenylation-independent RNA polymerase II termination.

Rengachari, S.Hainthaler, T.Oberthuer, C.Lidschreiber, M.Cramer, P.

(2025) Nat Struct Mol Biol 32: 339-345

  • DOI: https://doi.org/10.1038/s41594-024-01409-0
  • Primary Citation of Related Structures:  
    8RAM, 8RAN, 8RAO, 8RAP

  • PubMed Abstract: 

    The mechanisms underlying the initiation and elongation of RNA polymerase II (Pol II) transcription are well-studied, whereas termination remains poorly understood. Here we analyze the mechanism of polyadenylation-independent Pol II termination mediated by the yeast Sen1 helicase. Cryo-electron microscopy structures of two pretermination intermediates show that Sen1 binds to Pol II and uses its adenosine triphosphatase activity to pull on exiting RNA in the 5' direction. This is predicted to push Pol II forward, induce an unstable hypertranslocated state and destabilize the transcription bubble, thereby facilitating termination. This mechanism of transcription termination may be widely used because it is conceptually conserved in the bacterial transcription system.


  • Organizational Affiliation

    Department of Molecular Biology, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany. srinivasan.rengachari@mpinat.mpg.de.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Helicase SEN1A [auth O]2,231Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SEN1
EC: 3.6.4
UniProt
Find proteins for Q00416 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q00416 
Go to UniProtKB:  Q00416
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ00416
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)Germany--

Revision History  (Full details and data files)

  • Version 1.0: 2024-10-30
    Type: Initial release
  • Version 1.1: 2025-02-26
    Changes: Data collection, Database references