1ZGE

carbonic anhydrase II in complex with p-Sulfonamido-o,o'-dichloroaniline as sulfonamide inhibitor

• PDB DOI: https://doi.org/10.2210/pdb1ZGE/pdb

• Classification: LYASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-04-21 Released: 2006-05-23 
• Deposition Author(s): Honndorf, V.S., Heine, A., Klebe, G., Supuran, C.T.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 0.216 
• R-Value Work: 0.155 
• R-Value Observed: 0.155 

Literature

carbonic anhydrase II in complex with p-Sulfonamido-o,o'-dichloroaniline as sulfonamide inhibitor

Honndorf, V.S., Heine, A., Klebe, G., Supuran, C.T.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29.91 kDa 
• Atom Count: 2,349 
• Modelled Residue Count: 256 
• Deposited Residue Count: 259 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase II	A	259	Homo sapiens	Mutation(s): 0  Gene Names: CA2 EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens) Explore P00918  Go to UniProtKB:  P00918
PHAROS:  P00918 GTEx:  ENSG00000104267

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BE7	D [auth A]	(4-CARBOXYPHENYL)(CHLORO)MERCURY C7 H5 Cl Hg O2 YFZOUMNUDGGHIW-UHFFFAOYSA-M
SDA	C [auth A]	4-AMINO-3,5-DICHLOROBENZENESULFONAMIDE C6 H6 Cl2 N2 O2 S DVZMRTJKNJKEGV-UHFFFAOYSA-N
GOL	E [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
SDA	PDBBind:  1ZGE	Ki: 50 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 0.216 
• R-Value Work: 0.155 
• R-Value Observed: 0.155 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.34	α = 90
b = 41.66	β = 104.43
c = 72.11	γ = 90

Software Package:

Software Name	Purpose
SHELX	model building
SHELXL-97	refinement
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-05-23 
Deposition Author(s): Honndorf, V.S., Heine, A., Klebe, G., Supuran, C.T.

Revision History  

• Version 1.0: 2006-05-23
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2017-10-11
  Changes: Refinement description
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Derived calculations
• Version 1.5: 2024-02-28
  Changes: Structure summary
• Version 1.6: 2024-03-13
  Changes: Source and taxonomy, Structure summary