2OT1

Fructose-1,6-bisphosphate aldolase from rabbit muscle in complex with naphthol AS-E phosphate, a competitive inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A hydrophobic pocket in the active site of glycolytic aldolase mediates interactions with wiskott-Aldrich syndrome protein.

St-Jean, M.Izard, T.Sygusch, J.

(2007) J.Biol.Chem. 282: 14309-14315

  • DOI: 10.1074/jbc.M611505200
  • Primary Citation of Related Structures:  2OT0

  • PubMed Abstract: 
  • Aldolase plays essential catalytic roles in glycolysis and gluconeogenesis. However, aldolase is a highly abundant protein that is remarkably promiscuous in its interactions with other cellular proteins. In particular, aldolase binds to highly acidic ...

    Aldolase plays essential catalytic roles in glycolysis and gluconeogenesis. However, aldolase is a highly abundant protein that is remarkably promiscuous in its interactions with other cellular proteins. In particular, aldolase binds to highly acidic amino acid sequences, including the C terminus of the Wiskott-Aldrich syndrome protein, an actin nucleation-promoting factor. Here we report the crystal structure of tetrameric rabbit muscle aldolase in complex with a C-terminal peptide of Wiskott-Aldrich syndrome protein. Aldolase recognizes a short, four-residue DEWD motif (residues 498-501), which adopts a loose hairpin turn that folds around the central aromatic residue, enabling its tryptophan side chain to fit into a hydrophobic pocket in the active site of aldolase. The flanking acidic residues in this binding motif provide further interactions with conserved aldolase active site residues Arg-42 and Arg-303, aligning their side chains and forming the sides of the hydrophobic pocket. The binding of Wiskott-Aldrich syndrome protein to aldolase precludes intramolecular interactions of its C terminus with its active site and is competitive with substrate as well as with binding by actin and cortactin. Finally, based on this structure, a novel naphthol phosphate-based inhibitor of aldolase was identified, and its structure in complex with aldolase demonstrated mimicry of the Wiskott-Aldrich syndrome protein-aldolase interaction. The data support a model whereby aldolase exists in distinct forms that regulate glycolysis or actin dynamics.


    Organizational Affiliation

    Department of Biochemistry, University of Montreal, Montreal, Quebec, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fructose-bisphosphate aldolase A
A, B, C, D
363Oryctolagus cuniculusGene Names: ALDOA
EC: 4.1.2.13
Find proteins for P00883 (Oryctolagus cuniculus)
Go to Gene View: ALDOA
Go to UniProtKB:  P00883
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
N3P
Query on N3P

Download SDF File 
Download CCD File 
A, B, C, D
N-(4-CHLOROPHENYL)-3-(PHOSPHONOOXY)NAPHTHALENE-2-CARBOXAMIDE
C17 H13 Cl N O5 P
RQAQWBFHPMSXKR-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
N3PKi: ~100000 nM BINDINGMOAD
N3PKi: 100000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.149 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 84.780α = 90.00
b = 103.445β = 98.66
c = 83.601γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CNSrefinement
HKL-2000data scaling
CNSphasing
CBASSdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance