Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 61686.79 
• Atom Count: 4060 
• Residue Count: 532 
• Unique protein chains: 1

3F7B

Crystal Structure of soluble domain of CA4 in complex with small molecule.

• DOI: 10.2210/pdb3F7B/pdb

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


• Deposited: 2008-11-07 Released: 2009-09-22 
• Deposition Author(s): Greasley, S.E., Ferre, R.A.A., Pauly, T.A., Paz, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.252 
• R-Value Work: 0.191 

Literature

Thioether benzenesulfonamide inhibitors of carbonic anhydrases II and IV: structure-based drug design, synthesis, and biological evaluation.

Vernier, W., Chong, W., Rewolinski, D., Greasley, S., Pauly, T., Shaw, M., Dinh, D., Ferre, R.A., Nukui, S., Ornelas, M., Reyner, E.

(2010) Bioorg.Med.Chem. 18: 3307-3319

• PubMed: 20363633 
• DOI: 10.1016/j.bmc.2010.03.014
• Primary Citation of Related Structures:  
  3FW3, 3F7U


• PubMed Abstract: 
  

A novel series of potent thioether benzenesulfonamide inhibitors of carbonic anhydrases II and IV was discovered using structure-based drug design. Synthesis, structure-activity relationship, and optimization of physicochemical properties are described. Low nanomolar potency was achieved, and selected compounds with improved thermodynamic solubility showed promising in vitro inhibition of carbonic anhydrase activity in rabbit iris ciliary body homogenate.

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Organizational Affiliation: 

Pfizer Global Research and Development, La Jolla Laboratories, 10770 Science Center Drive, San Diego, CA 92121, USA. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Carbonic anhydrase 4	A, B	266	Homo sapiens	Mutation(s): 0  Gene Names: CA4 EC: 4.2.1.1
Find proteins for P22748 (Homo sapiens) Go to Gene View: CA4 Go to UniProtKB:  P22748

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	A, B	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
AG5	A, B	N-(2-phenylethyl)-2-(phenylsulfanyl)-5-sulfamoylpyridine-3-carboxamide C20 H19 N3 O3 S2 MGWPMEUXUFQQAQ-UHFFFAOYSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
AG5	IC50: 64 nM (100) BINDINGDB
AG5	IC50: 64 nM BINDINGMOAD
AG5	IC50: 64 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.252 
• R-Value Work: 0.191 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 125.910	α = 90.00
b = 128.556	β = 99.88
c = 46.365	γ = 90.00

Software Package:

Software Name	Purpose
AMoRE	phasing
HKL-2000	data scaling
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-11-07 
• Released Date: 2009-09-22 
• Deposition Author(s): Greasley, S.E., Ferre, R.A.A., Pauly, T.A., Paz, R.

Revision History 

• Version 1.0: 2009-09-22
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance