Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 61.69 kDa 
• Atom Count: 4323 
• Residue Count: 504 
• 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
• Mutation(s): No 


• 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 
• R-Value Observed: 0.194 

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:  
  3F7U, 3FW3, 3F7B


• 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

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
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) Explore P22748  Go to UniProtKB:  P22748
NIH Common Fund Data Resources
PHAROS  P22748 GTEx  ENSG00000167434

Small Molecules

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

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
AG5	IC50 :  64   nM  PDBBind
AG5	IC50:  64   nM  Binding MOAD
AG5	IC50:  64   nM  BindingDB

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.252 
• R-Value Work: 0.191 
• R-Value Observed: 0.194 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 125.91	α = 90
b = 128.556	β = 99.88
c = 46.365	γ = 90

Software Package:

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

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
  Changes: Version format compliance