2IT4

X ray structure of the complex between Carbonic Anhydrase I and the phosphonate antiviral drug foscarnet


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.246 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Phosph(on)ate as a zinc-binding group in metalloenzyme inhibitors: X-ray crystal structure of the antiviral drug foscarnet complexed to human carbonic anhydrase I.

Temperini, C.Innocenti, A.Guerri, A.Scozzafava, A.Rusconi, S.Supuran, C.T.

(2007) Bioorg.Med.Chem.Lett. 17: 2210-2215

  • DOI: 10.1016/j.bmcl.2007.01.113

  • PubMed Abstract: 
  • Foscarnet (phosphonoformate trisodium salt), an antiviral used for the treatment of HIV and herpes virus infections, also acts as an activator or inhibitor of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1). Interaction of the drug with 11 CA i ...

    Foscarnet (phosphonoformate trisodium salt), an antiviral used for the treatment of HIV and herpes virus infections, also acts as an activator or inhibitor of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1). Interaction of the drug with 11 CA isozymes has been investigated kinetically, and the X-ray structure of its adduct with isoform I (hCA I-foscarnet complex) has been resolved. The first CA inhibitor possessing a phosphonate zinc-binding group is thus evidenced, together with the factors governing recognition of such small molecules by a metalloenzyme active site. Foscarnet is also a clear-cut example of modulator of an enzyme activity which can act either as an activator or inhibitor of a CA isozyme.


    Organizational Affiliation

    Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Florence), Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 1
A, B
256Homo sapiensMutation(s): 0 
Gene Names: CA1
EC: 4.2.1.1
Find proteins for P00915 (Homo sapiens)
Go to Gene View: CA1
Go to UniProtKB:  P00915
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
PPF
Query on PPF

Download SDF File 
Download CCD File 
A
PHOSPHONOFORMIC ACID
C H3 O5 P
ZJAOAACCNHFJAH-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PPFKi: 24100000 nM BINDINGMOAD
PPFKi: 24100000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.316 
  • R-Value Work: 0.246 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.580α = 90.00
b = 69.510β = 90.00
c = 120.440γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
CrysalisProdata reduction
SCALAdata scaling
CrysalisProdata collection
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-09-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-18
    Type: Refinement description
  • Version 1.3: 2018-01-31
    Type: Experimental preparation
  • Version 1.4: 2018-04-04
    Type: Data collection