3K2F

Nitric oxide-donating carbonic anhydrase inhibitors for the treatment of open-angle glaucoma


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Nitric oxide-donating carbonic anhydrase inhibitors for the treatment of open-angle glaucoma

Steele, R.M.Benedini, F.Biondi, S.Borghi, V.Carzaniga, L.Impagnatiello, F.Miglietta, D.Chong, W.K.Rajapakse, R.Cecchi, A.Temperini, C.Supuran, C.T.

(2009) Bioorg Med Chem Lett 19: 6565-6570

  • DOI: 10.1016/j.bmcl.2009.10.036
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Novel bi-functional compounds with a nitric oxide (NO)-releasing moiety bound to a dorzolamide scaffold were investigated. Several compounds were synthesized and their activity as selective carbonic anhydrase inhibitors (CAI) evaluated in vitro on re ...

    Novel bi-functional compounds with a nitric oxide (NO)-releasing moiety bound to a dorzolamide scaffold were investigated. Several compounds were synthesized and their activity as selective carbonic anhydrase inhibitors (CAI) evaluated in vitro on recombinant hCA type I, II and IV enzyme isoforms where they showed different degrees of potency and selectivity to hCA II. A high resolution X-ray crystal structure for the CA II adduct with 8 confirmed the high affinity of this class of compounds for the enzyme. Compounds 4, 6, and 8 showed highly potent and efficacious NO-mediated properties as assessed by their vascular relaxant effect on methoxamine-precontracted rabbit aortic rings. Finally, compounds 4 and 6 exerted potent intraocular pressure (IOP) lowering effects in vivo in normotensive rabbits thereby anticipating their potential for the treatment of hypertensive glaucoma.


    Organizational Affiliation

    NicOx Research Institute, 20091 Bresso, Milan, Italy. steele@nicox.it



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 2
A
260N/AMutation(s): 0 
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 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NKX
Query on NKX

Download CCD File 
A
(2S)-2,3-bis(nitrooxy)propyl ethyl[(4S,6S)-6-methyl-7,7-dioxido-2-sulfamoyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-yl]carbamate
C14 H20 N4 O12 S3
RFISBOUXKIOATP-QXEWZRGKSA-N
 Ligand Interaction
HG
Query on HG

Download CCD File 
A
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-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 %)
NKXKi:  63   nM  Binding MOAD
NKXKi :  63   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.63α = 90
b = 42.01β = 104.4
c = 71.46γ = 90
Software Package:
Software NamePurpose
CrysalisProdata collection
AMoREphasing
REFMACrefinement
CrysalisProdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-01
    Changes: Refinement description