2EU3

Human Carbonic anhydrase II in complex with novel inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 

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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

X-ray crystallographic studies reveal that the incorporation of spacer groups in carbonic anhydrase inhibitors causes alternate binding modes.

Fisher, S.Z.Govindasamy, L.Boyle, N.Agbandje-McKenna, M.Silverman, D.N.Blackburn, G.M.McKenna, R.

(2006) Acta Crystallogr Sect F Struct Biol Cryst Commun 62: 618-622

  • DOI: 10.1107/S1744309106020446
  • Primary Citation of Related Structures:  
    2EU2, 2EU3

  • PubMed Abstract: 
  • Human carbonic anhydrases (CAs) are well studied targets for the development of inhibitors for pharmaceutical applications. The crystal structure of human CA II has been determined in complex with two CA inhibitors (CAIs) containing conventional sulfonamide and thiadiazole moieties separated by a -CF2- or -CHNH2- spacer group ...

    Human carbonic anhydrases (CAs) are well studied targets for the development of inhibitors for pharmaceutical applications. The crystal structure of human CA II has been determined in complex with two CA inhibitors (CAIs) containing conventional sulfonamide and thiadiazole moieties separated by a -CF2- or -CHNH2- spacer group. The structures presented here reveal that these spacer groups allow novel binding modes for the thiadiazole moiety compared with conventional CAIs.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, FL 32610, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Carbonic anhydrase 2A260Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens)
Explore P00918 
Go to UniProtKB:  P00918
PHAROS:  P00918
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FF3 (Subject of Investigation/LOI)
Query on FF3

Download Ideal Coordinates CCD File 
C [auth A]1-(5-AMINO-1,3,4-THIADIAZOL-2-YL)-1,1-DIFLUOROMETHANESULFONAMIDE
C3 H4 F2 N4 O2 S2
XGFIHSGMBUMCQS-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.278α = 90
b = 41.396β = 103.96
c = 72.204γ = 90
Software Package:
Software NamePurpose
SHELXL-97refinement
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
CNSphasing
HKL-2000data collection

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-07-11
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description
  • Version 1.4: 2019-07-24
    Changes: Data collection, Refinement description
  • Version 1.5: 2019-08-14
    Changes: Data collection