Crystal structure of Werner syndrome helicase

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 

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Structure of the helicase core of Werner helicase, a key target in microsatellite instability cancers.

Newman, J.A.Gavard, A.E.Lieb, S.Ravichandran, M.C.Hauer, K.Werni, P.Geist, L.Bottcher, J.Engen, J.R.Rumpel, K.Samwer, M.Petronczki, M.Gileadi, O.

(2021) Life Sci Alliance 4

  • DOI: https://doi.org/10.26508/lsa.202000795
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Loss of WRN, a DNA repair helicase, was identified as a strong vulnerability of microsatellite instable (MSI) cancers, making WRN a promising drug target. We show that ATP binding and hydrolysis are required for genome integrity and viability of MSI cancer cells. We report a 2.2-Å crystal structure of the WRN helicase core (517-1,093), comprising the two helicase subdomains and winged helix domain but not the HRDC domain or nuclease domains. The structure highlights unusual features. First, an atypical mode of nucleotide binding that results in unusual relative positioning of the two helicase subdomains. Second, an additional β-hairpin in the second helicase subdomain and an unusual helical hairpin in the Zn 2+ binding domain. Modelling of the WRN helicase in complex with DNA suggests roles for these features in the binding of alternative DNA structures. NMR analysis shows a weak interaction between the HRDC domain and the helicase core, indicating a possible biological role for this association. Together, this study will facilitate the structure-based development of inhibitors against WRN helicase.

  • Organizational Affiliation

    Structural Genomics Consortium, University of Oxford, Oxford, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Werner syndrome ATP-dependent helicase585Homo sapiensMutation(s): 1 
EC: (PDB Primary Data), 3.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q14191 (Homo sapiens)
Explore Q14191 
Go to UniProtKB:  Q14191
PHAROS:  Q14191
GTEx:  ENSG00000165392 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14191
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.595α = 90
b = 90.627β = 90
c = 138.233γ = 90
Software Package:
Software NamePurpose
DIALSdata reduction
DIALSdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom--

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-29
    Type: Initial release
  • Version 1.1: 2020-12-09
    Changes: Database references, Derived calculations
  • Version 1.2: 2024-01-24
    Changes: Data collection, Database references, Refinement description