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 

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Ligand Structure Quality Assessment 


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
  • Primary Citation of Related Structures:  
    3FFP

  • 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 were included in this study ...

    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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Carbonic anhydrase 2A [auth X]260Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens)
Explore P00918 
Go to UniProtKB:  P00918
PHAROS:  P00918
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LC1 (Subject of Investigation/LOI)
Query on LC1

Download Ideal Coordinates CCD File 
D [auth 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 Ideal Coordinates CCD File 
C [auth X]MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
 Ligand Interaction
BEZ
Query on BEZ

Download Ideal Coordinates CCD File 
E [auth X]BENZOIC ACID
C7 H6 O2
WPYMKLBDIGXBTP-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth X]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
LC1 Binding MOAD:  3FFP Ki: 72.5 (nM) from 1 assay(s)
BindingDB:  3FFP Ki: 72.5 (nM) from 1 assay(s)
PDBBind:  3FFP Ki: 72.5 (nM) from 1 assay(s)
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

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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