3BL0

Carbonic anhydrase inhibitors. Interaction of 2-N,N-Dimethylamino-1,3,4-thiadiazole-5-methanesulfonamide with twelve mammalian isoforms: kinetic and X-Ray crystallographic studies


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Carbonic anhydrase inhibitors. Interaction of 2-N,N-dimethylamino-1,3,4-thiadiazole-5-methanesulfonamide with 12 mammalian isoforms: kinetic and X-ray crystallographic studies.

Temperini, C.Cecchi, A.Boyle, N.A.Scozzafava, A.Cabeza, J.E.Wentworth, P.Blackburn, G.M.Supuran, C.T.

(2008) Bioorg.Med.Chem.Lett. 18: 999-1005

  • DOI: 10.1016/j.bmcl.2007.12.022

  • PubMed Abstract: 
  • 2-N,N-Dimethylamino-1,3,4-thiadiazole-5-methanesulfonamide was tested for its interaction with the 12 catalytically active mammalian carbonic anhydrase (CA, EC 4.2.1.1) isozymes, CA I-XIV. The compound is a potent inhibitor of CA IV, VII, IX, XII, an ...

    2-N,N-Dimethylamino-1,3,4-thiadiazole-5-methanesulfonamide was tested for its interaction with the 12 catalytically active mammalian carbonic anhydrase (CA, EC 4.2.1.1) isozymes, CA I-XIV. The compound is a potent inhibitor of CA IV, VII, IX, XII, and XIII (K(I)s of 0.61-39 nM), a medium potency inhibitor of CA II and VA (K(I)s of 121-438 nM), and a weak inhibitor against the other isoforms (CA III, VB, VI, and XIV), making it a very interesting candidate for situations in which a strong/selective inhibition of certain isozymes is needed. The crystal structure of the hCA II adduct of this sulfonamide revealed interesting interactions between the inhibitor and the enzyme which are quite different from those observed in the adducts of CA II with the structurally related aliphatic derivatives zonisamide, 2-amino-1,3,4-thiadiazolyl-5-difluoromethanesulfonamide, and 2-dimethylamino-5-[sulfonamido-(aminomethyl)]-1,3,4-thiadiazole reported earlier.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 2
A
260Homo 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 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MBO
Query on MBO

Download SDF File 
Download CCD File 
A
MERCURIBENZOIC ACID
C7 H5 Hg O2
FVFZSVRSDNUCGG-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
BL0
Query on BL0

Download SDF File 
Download CCD File 
A
1-[5-(dimethylamino)-1,3,4-thiadiazol-2-yl]methanesulfonamide
2-N,N-Dimethylamino-1,3,4-thiadiazole-5-methanesulfonamide
C5 H10 N4 O2 S2
HZGQWVQLUYIYQA-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
BL0Ki: 121 nM BINDINGMOAD
BL0Ki: 121 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.199 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 41.550α = 90.00
b = 42.130β = 104.25
c = 72.410γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
CrysalisProdata reduction
REFMACrefinement
SCALAdata scaling
CrysalisProdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-01-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description
  • Version 1.3: 2018-04-04
    Type: Data collection