1CRK

MITOCHONDRIAL CREATINE KINASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of mitochondrial creatine kinase.

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

(1996) Nature 381: 341-345

  • DOI: 10.1038/381341a0
  • Also Cited By: 1QK1

  • PubMed Abstract: 
  • Creatine kinase (CK, EC 2.7.3.2), 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 ...

    Creatine kinase (CK, EC 2.7.3.2), 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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CREATINE KINASE
A, B, C, D
380Gallus gallusMutation(s): 0 
Gene Names: CKMT2
EC: 2.7.3.2
Find proteins for P11009 (Gallus gallus)
Go to Gene View: CKMT2
Go to UniProtKB:  P11009
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B, C, D
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.217 
  • Space Group: P 42
Unit Cell:
Length (Å)Angle (°)
a = 126.000α = 90.00
b = 126.000β = 90.00
c = 144.700γ = 90.00
Software Package:
Software NamePurpose
MIRmodel building
XSCALEdata scaling
X-PLORrefinement
X-PLORphasing
XDSdata reduction
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-07-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance