Experimental Data Snapshot

  • Resolution: 3.00 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.217 

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This is version 1.3 of the entry. See complete history


Structure of mitochondrial creatine kinase.

Fritz-Wolf, K.Schnyder, T.Wallimann, T.Kabsch, W.

(1996) Nature 381: 341-345

  • DOI: https://doi.org/10.1038/381341a0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Creatine kinase (CK, EC, an enzyme important for energy metabolism in cells of high and fluctuating energy requirements, catalyses the reversible transfer of a phosphoryl goup from phosphocreatine to ADP. We have solved the structure of the octameric mitochondrial isoform, Mib-CK, which is located in the intermembrane compartment and along the cristae membranes. Mib-CK consumes ATP produced in the mitochondria for the production of phosphocreatine, which is then exported into the cytosol for fast regeneration of ATP by the cytosolic CK isoforms. The octamer has 422 point-group symmetry, and appears as a cube of side length 93 angstrom with a channel 20 angstrom wide extending along the four-fold axis. Positively charged amino acids at the four-fold faces of the octamer possibly interact with negatively charged mitochondrial membranes. Each monomer consists of a small alpha-helical domain and a large domain containing an eight-stranded antiparallel beta-sheet flanked by seven alpha-helices. The conserved residues of the CK family form a compact cluster that covers the active site between the domains.

  • Organizational Affiliation

    Max-Planck-Institut für medizinische Forschung, Abteilung Biophysik, Heidelberg, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
380Gallus gallusMutation(s): 0 
Find proteins for P11009 (Gallus gallus)
Explore P11009 
Go to UniProtKB:  P11009
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11009
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.00 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.217 
  • Space Group: P 42
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126α = 90
b = 126β = 90
c = 144.7γ = 90
Software Package:
Software NamePurpose
MIRmodel building
X-PLORmodel building
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-07-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations, Other