5MJN

Three dimensional structure of human carbonic anhydrase II in complex with 5-[(4Chlorobenzyl)sulfanyl]thiophene-2-sulfonamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.17 Å
  • R-Value Free: 0.173 
  • R-Value Work: 0.140 
  • R-Value Observed: 0.142 

wwPDB Validation 3D Report Full Report



Literature

5-Substituted-benzylsulfanyl-thiophene-2-sulfonamides with effective carbonic anhydrase inhibitory activity: Solution and crystallographic investigations.

Ivanova, J.Balode, A.Zalubovskis, R.Leitans, J.Kazaks, A.Vullo, D.Tars, K.Supuran, C.T.

(2017) Bioorg Med Chem 25: 857-863

  • DOI: 10.1016/j.bmc.2016.11.045
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • A series of 5-substituted-benzylsulfanyl-thiophene-2-sulfonamides was prepared by reacting 5-bromo-thiophene-2-sulfonamide with 5-substituted-benzyl mercaptans. The new compounds were investigated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors. Th ...

    A series of 5-substituted-benzylsulfanyl-thiophene-2-sulfonamides was prepared by reacting 5-bromo-thiophene-2-sulfonamide with 5-substituted-benzyl mercaptans. The new compounds were investigated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors. The cytosolic human (h) isoforms hCA I was poorly inhibited by the new sulfonamides (K I s in the range of 683-4250nM), whereas hCA II, and the transmembrane, tumor associated isoforms hCA IX and XII were effectively inhibited in the subnanomolar-nanomolar range. A high resolution X-ray crystal structure of the adduct of hCA II with one of the new sulfonamides allowed us to rationalize the excellent inhibitory activity of these heterocyclic sulfonamides.


    Organizational Affiliation

    Università degli Studi di Firenze, Dipartimento Neurofarba, Sezione di ScienzeFarmaceutiche e Nutraceutiche, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy. Electronic address: claudiu.supuran@unifi.it.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 2
A
259Homo 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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
7O8
Query on 7O8

Download CCD File 
A
5-[(4-chlorophenyl)methylsulfanyl]thiophene-2-sulfonamide
C11 H10 Cl N O2 S3
YITSBZGLCZKZEB-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 %)
7O8Ki:  2.9000000953674316   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.17 Å
  • R-Value Free: 0.173 
  • R-Value Work: 0.140 
  • R-Value Observed: 0.142 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.36α = 90
b = 41.32β = 104.48
c = 72.25γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
Cootmodel building

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2016-12-01 
  • Released Date: 2017-12-06 
  • Deposition Author(s): Leitans, J., Tars, K.

Revision History 

  • Version 1.0: 2017-12-06
    Type: Initial release