3ANM

Crystal structure of 1-deoxy-D-xylulose 5-phosphate reductoisomerase (DXR) complexed with 5-phenylpyridin-2-ylmethylphosphonic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structures of 1-Deoxy-D-Xylulose-5-Phosphate Reductoisomerase/Lipophilic Phosphonate Complexes

Deng, L.Endo, K.Kato, M.Cheng, G.Yajima, S.Song, Y.

(2011) ACS Med Chem Lett 2: 165-170

  • DOI: 10.1021/ml100243r
  • Primary Citation of Related Structures:  
    3ANL, 3ANM, 3ANN

  • PubMed Abstract: 
  • Fosmidomycin, a potent inhibitor of 1-deoxy-D-xylulose-5-phosphate reductoisomerase (DXR), has antibacterial and antimalaria activity. Due to its poor pharmacokinetics, more lipophilic DXR inhibitors are needed. However, the hydrophobic binding site( ...

    Fosmidomycin, a potent inhibitor of 1-deoxy-D-xylulose-5-phosphate reductoisomerase (DXR), has antibacterial and antimalaria activity. Due to its poor pharmacokinetics, more lipophilic DXR inhibitors are needed. However, the hydrophobic binding site(s) in DXR remains elusive. Here, pyridine/quinoline containing phosphonates are identified to be DXR inhibitors with IC(50) values as low as 840 nM. We also report three DXR:inhibitor structures, revealing a novel binding mode. The indole group of Trp211 is found to move ~4.6 Å to open up a mainly hydrophobic pocket, where the pyridine/quinoline rings of the inhibitors are located and have strong π-π stacking/charge-transfer interactions with the indole. Docking studies demonstrate our structures could be used to predict the binding modes of other lipophilic DXR inhibitors. Overall, this work shows an important role of Trp211 in inhibitor recognition and provides a structural basis for future drug design and development.


    Organizational Affiliation

    Department of Pharmacology, Baylor College of Medicine, 1 Baylor Plaza, Houston, Texas 77030.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
1-deoxy-D-xylulose 5-phosphate reductoisomeraseAB420Escherichia coli K-12Mutation(s): 0 
Gene Names: dxrispCyaeMb0173JW0168
EC: 1.1.1.267
Find proteins for P45568 (Escherichia coli (strain K12))
Explore P45568 
Go to UniProtKB:  P45568
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDP
Query on NDP

Download CCD File 
A, B
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
 Ligand Interaction
SYD
Query on SYD

Download CCD File 
A, B
[(5-phenylpyridin-2-yl)methyl]phosphonic acid
C12 H12 N O3 P
JTYLHYFDHHMHKD-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
SYDIC50:  840   nM  Binding MOAD
SYDIC50:  840   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 182.329α = 90
b = 59.223β = 90
c = 87.028γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-02-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-10-19
    Changes: Database references