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CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN ESCHERICHIA COLI GLYCEROL KINASE AND THE ALLOSTERIC REGULATOR FRUCTOSE 1,6-BISPHOSPHATE.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a complex of Escherichia coli glycerol kinase and an allosteric effector fructose 1,6-bisphosphate.

Ormo, M.Bystrom, C.E.Remington, S.J.

(1998) Biochemistry 37: 16565-16572

  • DOI: 10.1021/bi981616s
  • Primary Citation of Related Structures:  1BO5

  • PubMed Abstract: 
  • The three-dimensional structures of Escherichia coli glycerol kinase (GK) with bound glycerol in the presence and absence of one of the allosteric regulators of its activity, fructose 1,6-bisphosphate (FBP), at 3.2 and 3.0 A, are presented. The molec ...

    The three-dimensional structures of Escherichia coli glycerol kinase (GK) with bound glycerol in the presence and absence of one of the allosteric regulators of its activity, fructose 1,6-bisphosphate (FBP), at 3.2 and 3.0 A, are presented. The molecule crystallized in space group P41212, and the structure was solved by molecular replacement. The models were refined with good stereochemistry to final R-factors of 21.1 and 21.9%, respectively. A tetrameric arrangement of monomers was observed which was essentially identical to the proposed inactive tetramer II previously described [Feese, M. D., Faber, H. R., Bystrom, C. E., Pettigrew, D. W., and Remington, S. J. (1998) Structure (in press)]. However, the crystal packing in this form was especially open, permitting the FBP binding site to be occupied and identified. The crystallographic data revealed a most unusual type of FBP binding site formed between two glycine-arginine loops (residues 234-236) where one-half of the binding site is donated by each monomer at the regulatory interface. The molecule of FBP binds in two mutually exclusive modes on a noncrystallographic 2-fold axis at 50% occupancy each; thus, a tetramer of GK binds two molecules of FBP. Ionic interactions between the 1- and 6-phosphates of FBP and Arg 236 were observed in addition to hydrogen bonding interactions between the backbone amide of Gly 234 and the 6-phosphate. No contacts between the protein and the furanose ring were observed. Mutagenesis of Arg 236 to alanine drastically reduced the extent of inhibition of GK by FBP and lowered, but did not eliminate, the ability of FBP to promote tetramer association. These observations are consistent with the previously characterized mechanism of FBP inhibition of GK, in which FBP acts both to promote dimer-tetramer assembly and to inactivate the tetramers.


    Organizational Affiliation

    Institute of Molecular Biology, University of Oregon, Eugene 97403, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (GLYCEROL KINASE)
O, Z
501Escherichia coli (strain K12)Gene Names: glpK
EC: 2.7.1.30
Find proteins for P0A6F3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6F3
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download SDF File 
Download CCD File 
O
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
HEPES
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
O, Z
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Work: 0.219 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 168.800α = 90.00
b = 168.800β = 90.00
c = 202.700γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-01-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance