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: 1.9 Å

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


  • 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 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
    • 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


    Organizational Affiliation

    Department of Molecular Biophysics, University of Lund, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CARBONIC ANHYDRASE II
A
259Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
Find proteins for P00918 (Homo sapiens)
Go to Gene View: CA2
Go to UniProtKB:  P00918
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Download SDF File 
Download CCD File 
A
TRIFLUOROMETHANE SULFONAMIDE
C H2 F3 N O2 S
KAKQVSNHTBLJCH-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FMSKd: 91 - 130 nM (100) BINDINGDB
FMSIC50: 13 nM (100) BINDINGDB
FMSKd: 2 nM BINDINGMOAD
FMSKi: 2 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 42.700α = 90.00
b = 41.700β = 104.60
c = 73.000γ = 90.00
Software Package:
Software NamePurpose
PROFFTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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