Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29976.58 
• Atom Count: 2053 
• Residue Count: 259 
• Unique protein chains: 1

1Z9Y

carbonic anhydrase II in complex with furosemide as sulfonamide inhibitor

• DOI: 10.2210/pdb1Z9Y/pdb

• Classification: LYASE/LYASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2005-04-05 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: 1.66 Å
• R-Value Free: 0.245 
• R-Value Work: 0.172 

Literature

carbonic anhydrase II in complex with furosemide as sulfonamide inhibitor

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

To be published.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Carbonic anhydrase II	A	259	Homo sapiens	Mutation(s): 0  Gene Names: CA2 EC: 4.2.1.1
Find proteins for P00918 (Homo sapiens) Go to Gene View: CA2 Go to UniProtKB:  P00918

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
BE7	A	(4-CARBOXYPHENYL)(CHLORO)MERCURY P-CHLOROMERCURIBENZOIC ACID C7 H5 Cl Hg O2 YFZOUMNUDGGHIW-UHFFFAOYSA-M
FUN	A	5-(AMINOSULFONYL)-4-CHLORO-2-[(2-FURYLMETHYL)AMINO]BENZOIC ACID Furosemide C12 H11 Cl N2 O5 S ZZUFCTLCJUWOSV-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
FUN	Ki: 65 - 65000 nM (100) BINDINGDB
FUN	Ki: 65 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.66 Å
• R-Value Free: 0.245 
• R-Value Work: 0.172 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 42.310	α = 90.00
b = 41.950	β = 104.57
c = 72.150	γ = 90.00

Software Package:

Software Name	Purpose
SHELXL-97	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	refinement
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-04-05 
• 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
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Non-polymer description, Version format compliance
• Version 1.3: 2017-10-11
  Type: Refinement description