Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Protein Workshop | Ligand Explorer

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 30501.56 
• Atom Count: 2150 
• Residue Count: 259 
• Unique protein chains: 1

2GD8

Crystal structure analysis of the human carbonic anhydrase II in complex with a 2-substituted estradiol bis-sulfamate

• DOI: 10.2210/pdb2GD8/pdb

• Classification: LYASE
• Organism(s): Homo sapiens


• Deposited: 2006-03-15 Released: 2007-02-06 
• Deposition Author(s): De Simone, G., Di Fiore, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.46 Å
• R-Value Free: 0.212 
• R-Value Work: 0.195 

Literature

2-substituted estradiol bis-sulfamates, multitargeted antitumor agents: synthesis, in vitro SAR, protein crystallography, and in vivo activity.

Leese, M.P., Leblond, B., Smith, A., Newman, S.P., Di Fiore, A., De Simone, G., Supuran, C.T., Purohit, A., Reed, M.J., Potter, B.V.

(2006) J.Med.Chem. 49: 7683-7696

• PubMed: 17181151 
• DOI: 10.1021/jm060705x
• Also Cited By: 3C7P, 3BET


• PubMed Abstract: 
  

The anticancer activities and SARs of estradiol-17-O-sulfamates and estradiol 3,17-O,O-bis-sulfamates (E2bisMATEs) as steroid sulfatase (STS) inhibitors and antiproliferative agents are discussed. Estradiol 3,17-O,O-bis-sulfamates 20 and 21, in contrast to the 17-O-monosulfamate 11, proved to be excellent STS inhibitors. 2-Substituted E2bisMATEs 21 and 23 additionally exhibited potent antiproliferative activity with mean graph midpoint values of 18-87 nM in the NCI 60-cell-line panel. 21 Exhibited antiangiogenic in vitro and in vivo activity in an early-stage Lewis lung model, and 23 dosed p.o. caused marked growth inhibition in a nude mouse xenograft tumor model. Modeling studies suggest that the E2bisMATEs and 2-MeOE2 share a common mode of binding to tubulin, though COMPARE analysis of activity profiles was negative. 21 was cocrystallized with carbonic anhydrase II, and X-ray crystallography revealed unexpected coordination of the 17-O-sulfamate of 21 to the active site zinc and a probable additional lower affinity binding site. 2-Substituted E2bisMATEs are attractive candidates for further development as multitargeted anticancer agents.

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Organizational Affiliation: 

Medicinal Chemistry, Department of Pharmacy and Pharmacology & Sterix Ltd., University of Bath, Bath BA2 7AY, United Kingdom.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Carbonic anhydrase 2	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 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
MBO	A	MERCURIBENZOIC ACID C7 H5 Hg O2 FVFZSVRSDNUCGG-UHFFFAOYSA-N
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	A	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
PO1	A	(9BETA,13ALPHA,14BETA,17ALPHA)-2-METHOXYESTRA-1,3,5(10)-TRIENE-3,17-DIYL DISULFAMATE C19 H28 N2 O7 S2 AQSNIXKAKUZPSI-SSTWWWIQSA-N

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
PO1	IC50: 379 nM (100) BINDINGDB
CL	Ki: 200000000 nM (100) BINDINGDB
PO1	IC50: 379 nM BINDINGMOAD
PO1	IC50: 39 nM PDBBIND

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.46 Å
• R-Value Free: 0.212 
• R-Value Work: 0.195 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 42.130	α = 90.00
b = 41.420	β = 104.50
c = 72.080	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
CNS	refinement
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-03-15 
• Released Date: 2007-02-06 
• Deposition Author(s): De Simone, G., Di Fiore, A.

Revision History 

• Version 1.0: 2007-02-06
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance