1KBL

PYRUVATE PHOSPHATE DIKINASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.201 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Pyruvate site of pyruvate phosphate dikinase: crystal structure of the enzyme-phosphonopyruvate complex, and mutant analysis

Herzberg, O.Chen, C.C.Liu, S.Tempczyk, A.Howard, A.Wei, M.Ye, D.Dunaway-Mariano, D.

(2002) Biochemistry 41: 780-787

  • DOI: 10.1021/bi011799+
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Crystals of pyruvate phosphate dikinase in complex with a substrate analogue inhibitor, phosphonopyruvate (K(i) = 3 microM), have been obtained in the presence of Mg(2+). The structure has been determined and refined at 2.2 A resolution, revealing th ...

    Crystals of pyruvate phosphate dikinase in complex with a substrate analogue inhibitor, phosphonopyruvate (K(i) = 3 microM), have been obtained in the presence of Mg(2+). The structure has been determined and refined at 2.2 A resolution, revealing that the Mg(2+)-bound phosphonopyruvate binds in the alpha/beta-barrel's central channel, at the C-termini of the beta-strands. The mode of binding resembles closely the previously proposed PEP substrate binding mode, inferred by the homology of the structure (but not sequence homology) to pyruvate kinase. Kinetic analysis of site-directed mutants, probing residues involved in inhibitor binding, showed that all mutations resulted in inactivation, confirming the key role that these residues play in catalysis. Comparison between the structure of the PPDK-phosphonopyruvate complex and the structures of two complexes of pyruvate kinase, one with Mg(2+)-bound phospholactate and the other with Mg(2+)-oxalate and ATP, revealed that the two enzymes share some key features that facilitate common modes of substrate binding. There are also important structural differences; most notably, the machinery for acid/base catalysis is different.


    Related Citations: 
    • Swiveling-Domain Mechanism for Enzymatic Phosphotransfer between Remote Reaction Sites
      Herzberg, O., Chen, C.C., Kapadia, G., Mcguire, M., Carroll, L.J., Noh, S.J., Dunaway-Mariano, D.
      (1996) Proc Natl Acad Sci U S A 93: 2652
    • Location of the Phosphate Binding Site within Clostridium Symbiosum Pyruvate Phosphate Dikinase
      Mcguire, M., Huang, K., Kapadia, G., Herzberg, O., Dunaway-Mariano, D.
      (1998) Biochemistry 37: 13463
    • Identification of Domain-Domain Docking Sites within Clostridium Symbiosum Pyruvate Phosphate Dikinase by Amino Acid Replacement
      Wei, M., Li, Z., Ye, D., Herzberg, O., Dunaway-Mariano, D.
      (2000) J Biol Chem 275: 41156

    Organizational Affiliation

    Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, 9600 Gudelsky Drive, Rockville, Maryland 20850, USA. osnat@carb.nist.gov



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PYRUVATE PHOSPHATE DIKINASEA873[Clostridium] symbiosumMutation(s): 0 
Gene Names: ppdK
EC: 2.7.9.1
Find proteins for P22983 (Clostridium symbiosum)
Explore P22983 
Go to UniProtKB:  P22983
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
NH4
Query on NH4

Download CCD File 
A
AMMONIUM ION
H4 N
QGZKDVFQNNGYKY-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.201 
  • Space Group: P 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.837α = 90
b = 58.838β = 94.839
c = 102.949γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-01-30
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance