3FFP

X ray structure of the complex between carbonic anhydrase II and LC inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A thiabendazole sulfonamide shows potent inhibitory activity against mammalian and nematode alpha-carbonic anhydrases

Crocetti, L.Maresca, A.Temperini, C.Hall, R.A.Scozzafava, A.Muhlschlegel, F.A.Supuran, C.T.

(2009) Bioorg Med Chem Lett 19: 1371-1375

  • DOI: 10.1016/j.bmcl.2009.01.038
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • A sulfonamide derivative of the antihelmintic drug thiabendazole was prepared and investigated for inhibition of the zinc enzyme carbonic anhydrase CA (EC 4.2.1.1). Mammalian isoforms CA I-XIV and the nematode enzyme of Caenorhabditis elegans CAH-4b ...

    A sulfonamide derivative of the antihelmintic drug thiabendazole was prepared and investigated for inhibition of the zinc enzyme carbonic anhydrase CA (EC 4.2.1.1). Mammalian isoforms CA I-XIV and the nematode enzyme of Caenorhabditis elegans CAH-4b were included in this study. Thiabendazole-5-sulfonamide was a very effective inhibitor of CAH-4b and CA IX (K(I)s of 6.4-9.5nm) and also inhibited effectively isozymes CA I, II, IV-VII, and XII, with K(I)s in the range of 17.8-73.2nM. The high resolution X-ray crystal structure of its adduct with isozyme II evidenced the structural elements responsible for this potent inhibitory activity.


    Organizational Affiliation

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



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 2
X
260Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
Find proteins for P00918 (Homo sapiens)
Go to UniProtKB:  P00918
NIH Common Fund Data Resources
PHAROS  P00918
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LC1
Query on LC1

Download CCD File 
X
2-(1,3-thiazol-4-yl)-1H-benzimidazole-5-sulfonamide
C10 H8 N4 O2 S2
KGMVTZZDGKDTEU-UHFFFAOYSA-N
 Ligand Interaction
HG
Query on HG

Download CCD File 
X
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
BEZ
Query on BEZ

Download CCD File 
X
BENZOIC ACID
C7 H6 O2
WPYMKLBDIGXBTP-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
X
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
LC1Ki:  72.5   nM  Binding MOAD
LC1Ki:  72.5   nM  BindingDB
LC1Ki :  72.5   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.18α = 90
b = 41.43β = 104.47
c = 72.24γ = 90
Software Package:
Software NamePurpose
CrysalisProdata collection
AMoREphasing
REFMACrefinement
CrysalisProdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-08-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-01
    Changes: Refinement description