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: 30714.16 
• Atom Count: 2199 
• Residue Count: 260 
• Unique protein chains: 1

2FOS

Human Carbonic Anhydrase II complexed with two-prong inhibitors

• DOI: 10.2210/pdb2FOS/pdb

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


• Deposited: 2006-01-13 Released: 2006-04-04 
• Deposition Author(s): Jude, K.M., Christianson, D.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.1 Å
• R-Value Free: 0.153 
• R-Value Work: 0.128 

Literature

Ultrahigh resolution crystal structures of human carbonic anhydrases I and II complexed with two-prong inhibitors reveal the molecular basis of high affinity.

Jude, K.M., Banerjee, A.L., Haldar, M.K., Manokaran, S., Roy, B., Mallik, S., Srivastava, D.K., Christianson, D.W.

(2006) J.Am.Chem.Soc. 128: 3011-3018

• PubMed: 16506782 
• DOI: 10.1021/ja057257n
• Primary Citation of Related Structures:  
  2FOY, 2FOV, 2FOU, 2FOQ


• PubMed Abstract: 
  

The atomic-resolution crystal structures of human carbonic anhydrases I and II complexed with "two-prong" inhibitors are reported. Each inhibitor contains a benzenesulfonamide prong and a cupric iminodiacetate (IDA-Cu(2+)) prong separated by linkers of different lengths and compositions. The ionized NH(-) group of each benzenesulfonamide coordinates to the active site Zn(2+) ion; the IDA-Cu(2+) prong of the tightest-binding inhibitor, BR30, binds to H64 of CAII and H200 of CAI. This work provides the first evidence verifying the structural basis of nanomolar affinity measured for two-prong inhibitors targeting the carbonic anhydrases.

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Organizational Affiliation: 

Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Carbonic Anhydrase II	A	260	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
CU	A	COPPER (II) ION Cu JPVYNHNXODAKFH-UHFFFAOYSA-N
B17	A	{1-[4-(AMINOSULFONYL)PHENYL]-11-[(CARBOXY-KAPPAO)METHYL]-1-OXO-5,8-DIOXA-2,11-DIAZATRIDECAN-13-OATO(2-)-KAPPAO~13~}COPPER C17 H23 Cu N3 O9 S NANOCILFNMRPCU-NYPKHHQQCK

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CMH	A	L-PEPTIDE LINKING	C4 H9 Hg N O2 S		CYS

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
B17	Kd: 27 nM BINDINGMOAD

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.1 Å
• R-Value Free: 0.153 
• R-Value Work: 0.128 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 42.444	α = 90.00
b = 41.640	β = 104.24
c = 72.278	γ = 90.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-01-13 
• Released Date: 2006-04-04 
• Deposition Author(s): Jude, K.M., Christianson, D.W.

Revision History 

• Version 1.0: 2006-04-04
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance