Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 

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Transformation of MutL by ATP binding and hydrolysis: a switch in DNA mismatch repair.

Ban, C.Junop, M.Yang, W.

(1999) Cell 97: 85-97

  • DOI: https://doi.org/10.1016/s0092-8674(00)80717-5
  • Primary Citation of Related Structures:  
    1B62, 1B63

  • PubMed Abstract: 

    The MutL DNA mismatch repair protein has recently been shown to be an ATPase and to belong to an emerging ATPase superfamily that includes DNA topoisomerase II and Hsp90. We report here the crystal structures of a 40 kDa ATPase fragment of E. coli MutL (LN40) complexed with a substrate analog, ADPnP, and with product ADP. More than 60 residues that are disordered in the apoprotein structure become ordered and contribute to both ADPnP binding and dimerization of LN40. Hydrolysis of ATP, signified by subsequent release of the gamma-phosphate, releases two key loops and leads to dissociation of the LN40 dimer. Dimerization of the LN40 region is required for and is the rate-limiting step in ATP hydrolysis by MutL. The ATPase activity of MutL is stimulated by DNA and likely acts as a switch to coordinate DNA mismatch repair.

  • Organizational Affiliation

    Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MUTL333Escherichia coli K-12Mutation(s): 0 
Gene Names: MUTL
Find proteins for P23367 (Escherichia coli (strain K12))
Explore P23367 
Go to UniProtKB:  P23367
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23367
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.213 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.19α = 90
b = 72.37β = 90
c = 189.93γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 1999-06-08 
  • Deposition Author(s): Yang, W.

Revision History  (Full details and data files)

  • Version 1.0: 1999-06-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2023-08-02
    Changes: Database references, Derived calculations, Refinement description
  • Version 1.4: 2024-05-22
    Changes: Data collection