1ZFK

carbonic anhydrase II in complex with N-4-sulfonamidphenyl-N'-4-methylbenzosulfonylurease as sulfonamide inhibitor

• PDB DOI: https://doi.org/10.2210/pdb1ZFK/pdb

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


• Deposited: 2005-04-20 Released: 2006-05-23 
• Deposition Author(s): Honndorf, V.S., Heine, A., Klebe, G., Supuran, C.T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.56 Å
• R-Value Free: 0.224 
• R-Value Work: 0.161 
• R-Value Observed: 0.164 

Literature

carbonic anhydrase II in complex with N-4-sulfonamidphenyl-N'-4-methylbenzosulfonylurease 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: 30.51 kDa 
• Atom Count: 2,367 
• 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
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 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NR2	D [auth A], E [auth A]	N-({[4-(AMINOSULFONYL)PHENYL]AMINO}CARBONYL)-4-METHYLBENZENESULFONAMIDE C14 H15 N3 O5 S2 HDCXQTPVTAIPNZ-UHFFFAOYSA-N
BE7	F [auth A]	(4-CARBOXYPHENYL)(CHLORO)MERCURY C7 H5 Cl Hg O2 YFZOUMNUDGGHIW-UHFFFAOYSA-M
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	G [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
NR2	PDBBind:  1ZFK	Ki: 12 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.56 Å
• R-Value Free: 0.224 
• R-Value Work: 0.161 
• R-Value Observed: 0.164 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.49	α = 90
b = 41.51	β = 104.45
c = 72.41	γ = 90

Software Package:

Software Name	Purpose
SHELXL-97	refinement
CNS	refinement
HKL-2000	data reduction
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: 2019-07-24
  Changes: Data collection, Refinement description
• Version 1.5: 2024-02-14
  Changes: Data collection, Database references, Derived calculations
• Version 1.6: 2024-02-28
  Changes: Structure summary
• Version 1.7: 2024-03-13
  Changes: Source and taxonomy, Structure summary