1BCD

X-RAY CRYSTALLOGRAPHIC STRUCTURE OF A COMPLEX BETWEEN HUMAN CARBONIC ANHYDRASE II AND A NEW TOPICAL INHIBITOR, TRIFLUOROMETHANE SULPHONAMIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Observed: 0.154 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The structure of a complex between carbonic anhydrase II and a new inhibitor, trifluoromethane sulphonamide.

Hakansson, K.Liljas, A.

(1994) FEBS Lett 350: 319-322

  • DOI: 10.1016/0014-5793(94)00798-5
  • Primary Citation of Related Structures:  
    1BCD

  • PubMed Abstract: 
  • It has recently been shown that aliphatic sulphonamides are good inhibitors of carbonic anhydrase (CA) provided that the pK of the sulphonamide is low. We have determined the structure of the complex between CAII and CF3SO2NH2 by X-ray crystallograph ...

    It has recently been shown that aliphatic sulphonamides are good inhibitors of carbonic anhydrase (CA) provided that the pK of the sulphonamide is low. We have determined the structure of the complex between CAII and CF3SO2NH2 by X-ray crystallographic methods. The nitrogen of the sulphonamide is bound to the zinc ion of the enzyme in the usual manner. The other parts of the inhibitor show a different mode of binding from aromatic sulphonamides since the trifluoromethyl group is bound at the hydrophobic part of the active site instead of pointing out from the active site. It should be possible to design new inhibitors specific for the different isoenzymes, starting from the present structure.


    Related Citations: 
    • Refined Structure of the Aminobenzolamide Complex of Human Carbonic Anhydrase II at 1.9 Angstroms
      Vidgren, J., Svensson, A., Liljas, A.
      (1993) Int J Biol Macromol 15: 97
    • Structure of Native and Apo Carbonic Anhydrase II and Structure of Some of its Anion-Ligand Complexes
      Hakansson, K., Carlsson, M., Svensson, L.A., Liljas, A.
      (1992) J Mol Biol 227: 1192
    • Structure of Cobalt Carbonic Anhydrase Complexed with Bicarbonate
      Hakansson, K., Wehnert, A.
      (1992) J Mol Biol 228: 1212
    • Refined Structure of the Acetazolamide Complex of Human Carbonic Anhydrase II at 1.9 Angstroms
      Vidgren, J., Liljas, A., Walker, N.P.C.
      (1990) Int J Biol Macromol 12: 342

    Organizational Affiliation

    Department of Molecular Biophysics, University of Lund, Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CARBONIC ANHYDRASE IIA259Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
Find proteins for P00918 (Homo sapiens)
Explore P00918 
Go to UniProtKB:  P00918
NIH Common Fund Data Resources
PHAROS  P00918
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMS
Query on FMS

Download CCD File 
A
TRIFLUOROMETHANE SULFONAMIDE
C H2 F3 N O2 S
KAKQVSNHTBLJCH-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FMSKi :  2   nM  PDBBind
FMSKd:  2   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Observed: 0.154 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.7α = 90
b = 41.7β = 104.6
c = 73γ = 90
Software Package:
Software NamePurpose
PROFFTrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other