2KMU

RecQL4 Amino-terminal Domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The N-terminus of the human RecQL4 helicase is a homeodomain-like DNA interaction motif

Ohlenschlager, O.Kuhnert, A.Schneider, A.Haumann, S.Bellstedt, P.Keller, H.Saluz, H.P.Hortschansky, P.Hanel, F.Grosse, F.Gorlach, M.Pospiech, H.

(2012) Nucleic Acids Res 40: 8309-8324

  • DOI: https://doi.org/10.1093/nar/gks591
  • Primary Citation of Related Structures:  
    2KMU

  • PubMed Abstract: 

    The RecQL4 helicase is involved in the maintenance of genome integrity and DNA replication. Mutations in the human RecQL4 gene cause the Rothmund-Thomson, RAPADILINO and Baller-Gerold syndromes. Mouse models and experiments in human and Xenopus have proven the N-terminal part of RecQL4 to be vital for cell growth. We have identified the first 54 amino acids of RecQL4 (RecQL4_N54) as the minimum interaction region with human TopBP1. The solution structure of RecQL4_N54 was determined by heteronuclear liquid-state nuclear magnetic resonance (NMR) spectroscopy (PDB 2KMU; backbone root-mean-square deviation 0.73 Å). Despite low-sequence homology, the well-defined structure carries an overall helical fold similar to homeodomain DNA-binding proteins but lacks their archetypical, minor groove-binding N-terminal extension. Sequence comparison indicates that this N-terminal homeodomain-like fold is a common hallmark of metazoan RecQL4 and yeast Sld2 DNA replication initiation factors. RecQL4_N54 binds DNA without noticeable sequence specificity yet with apparent preference for branched over double-stranded (ds) or single-stranded (ss) DNA. NMR chemical shift perturbation observed upon titration with Y-shaped, ssDNA and dsDNA shows a major contribution of helix α3 to DNA binding, and additional arginine side chain interactions for the ss and Y-shaped DNA.


  • Organizational Affiliation

    Research Group Biomolecular NMR Spectroscopy, Leibniz Institute for Age Research-Fritz Lipmann Institute, Beutenbergstr. 11, Jena, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ATP-dependent DNA helicase Q456Homo sapiensMutation(s): 0 
Gene Names: RECQL4RECQ4
EC: 3.6.1
UniProt & NIH Common Fund Data Resources
Find proteins for O94761 (Homo sapiens)
Explore O94761 
Go to UniProtKB:  O94761
PHAROS:  O94761
GTEx:  ENSG00000160957 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO94761
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-07-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2013-09-04
    Changes: Database references
  • Version 1.3: 2020-02-26
    Changes: Data collection, Database references, Other
  • Version 1.4: 2023-06-14
    Changes: Database references, Other