2FJK

Crystal structure of Fructose-1,6-Bisphosphate Aldolase in Thermus caldophilus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Stereoselectivity of fructose-1,6-bisphosphate aldolase in Thermus caldophilus

Lee, J.H.Bae, J.Kim, D.Choi, Y.Im, Y.J.Koh, S.Kim, J.S.Kim, M.-K.Kang, G.B.Hong, S.-I.Lee, D.-S.Eom, S.H.

(2006) Biochem.Biophys.Res.Commun. 347: 616-625

  • DOI: 10.1016/j.bbrc.2006.06.139

  • PubMed Abstract: 
  • It was recently established that fructose-1,6-bisphosphate (FBP) aldolase (FBA) and tagatose-1,6-bisphosphate (TBP) aldolase (TBA), two class II aldolases, are highly specific for the diastereoselective synthesis of FBP and TBP from glyceraldehyde-3- ...

    It was recently established that fructose-1,6-bisphosphate (FBP) aldolase (FBA) and tagatose-1,6-bisphosphate (TBP) aldolase (TBA), two class II aldolases, are highly specific for the diastereoselective synthesis of FBP and TBP from glyceraldehyde-3-phosphate (G3P) and dihydroxyacetone phosphate (DHAP), respectively. In this paper, we report on a FBA from the thermophile Thermus caldophilus GK24 (Tca) that produces both FBP and TBP from C(3) substrates. Moreover, the FBP:TBP ratio could be adjusted by manipulating the concentrations of G3P and DHAP. This is the first native FBA known to show dual diastereoselectivity among the FBAs and TBAs characterized thus far. To explain the behavior of this enzyme, the X-ray crystal structure of the Tca FBA in complex with DHAP was determined at 2.2A resolution. It appears that as a result of alteration of five G3P binding residues, the substrate binding cavity of Tca FBA has a greater volume than those in the Escherichia coli FBA-phosphoglycolohydroxamate (PGH) and TBA-PGH complexes. We suggest that this steric difference underlies the difference in the diastereoselectivities of these class II aldolases.


    Organizational Affiliation

    Department of Life Science, Gwangju Institute of Science and Technology, Republic of Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fructose-bisphosphate aldolase
A, B, C, D
305Thermus caldophilusGene Names: fba
EC: 4.1.2.13
Find proteins for Q703I2 (Thermus caldophilus)
Go to UniProtKB:  Q703I2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
13P
Query on 13P

Download SDF File 
Download CCD File 
A, B, C, D
1,3-DIHYDROXYACETONEPHOSPHATE
C3 H7 O6 P
GNGACRATGGDKBX-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.237 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 98.900α = 90.00
b = 113.100β = 90.00
c = 115.700γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SOLVEphasing
MOSFLMdata reduction
CCP4data scaling
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-08
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance