3ICM

Trypanosoma cruzi farnesyl diphosphate synthase homodimer in complex with isopentenyl pyrophosphate, Mg2+ and 1-(2-Hydroxy-2,2-bis-phosphono-ethyl)-3-phenyl-pyridinium


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.190 

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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Binding of nitrogen-containing bisphosphonates (N-BPs) to the Trypanosoma cruzi farnesyl diphosphate synthase homodimer.

Huang, C.H.Gabelli, S.B.Oldfield, E.Amzel, L.M.

(2010) Proteins 78: 888-899

  • DOI: https://doi.org/10.1002/prot.22614
  • Primary Citation of Related Structures:  
    3IBA, 3ICK, 3ICM, 3ICN, 3ICZ, 3ID0

  • PubMed Abstract: 

    Bisphosphonates (BPs) are a class of compounds that have been used extensively in the treatment of osteoporosis and malignancy-related hypercalcemia. Some of these compounds act through inhibition of farnesyl diphosphate synthase (FPPS), a key enzyme in the synthesis of isoprenoids. Recently, nitrogen-containing bisphosphonates (N-BPs) used in bone resorption therapy have been shown to be active against Trypanosoma cruzi, the parasite that causes American trypanosomiasis (Chagas disease), suggesting that they may be used as anti-trypanosomal agents. The crystal structures of TcFPPS in complex with substrate (isopentenyl diphosphate, IPP) and five N-BP inhibitors show that the C-1 hydroxyl and the nitrogen-containing groups of the inhibitors alter the binding of IPP and the conformation of two TcFPPS residues, Tyr94 and Gln167. Isothermal titration calorimetry experiments suggest that binding of the first N-BPs to the homodimeric TcFPPS changes the binding properties of the second site. This mechanism of binding of N-BPs to TcFPPS is different to that reported for the binding of the same compounds to human FPPS. Proteins 2010. (c) 2009 Wiley-Liss, Inc.


  • Organizational Affiliation

    Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Farnesyl pyrophosphate synthase362Trypanosoma cruziMutation(s): 0 
Gene Names: FPPS
EC: 2.5.1.10
UniProt
Find proteins for Q95WL3 (Trypanosoma cruzi)
Explore Q95WL3 
Go to UniProtKB:  Q95WL3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ95WL3
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
P2H
Query on P2H

Download Ideal Coordinates CCD File 
B [auth A]1-(2-hydroxy-2,2-diphosphonoethyl)-3-phenylpyridinium
C13 H16 N O7 P2
ZYEONEYSNIUGRA-UHFFFAOYSA-O
IPE
Query on IPE

Download Ideal Coordinates CCD File 
D [auth A]3-METHYLBUT-3-ENYL TRIHYDROGEN DIPHOSPHATE
C5 H12 O7 P2
NUHSROFQTUXZQQ-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
C [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
MG
Query on MG

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
G [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.190 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.335α = 90
b = 58.335β = 90
c = 394.229γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-02-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2013-04-17
    Changes: Non-polymer description
  • Version 1.3: 2017-11-01
    Changes: Refinement description
  • Version 1.4: 2024-02-21
    Changes: Data collection, Database references, Derived calculations