4JSZ | pdb_00004jsz

Benzenesulfonamide bound to hCAII H94C

• PDB DOI: https://doi.org/10.2210/pdb4JSZ/pdb

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


• Deposited: 2013-03-22 Released: 2013-06-19 
• Deposition Author(s): Martin, D.P., Hann, Z.S., Cohen, S.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.230 (Depositor), 0.229 (DCC) 
• R-Value Work: 
  0.166 (Depositor), 0.167 (DCC) 
• R-Value Observed: 
  0.170 (Depositor) 

Starting Model: experimental

Literature

Metalloprotein-Inhibitor Binding: Human Carbonic Anhydrase II as a Model for Probing Metal-Ligand Interactions in a Metalloprotein Active Site.

Martin, D.P., Hann, Z.S., Cohen, S.M.

(2013) Inorg Chem 52: 12207-12215

• PubMed: 23706138 
• DOI: https://doi.org/10.1021/ic400295f
• Primary Citation Related Structures: 
  4JS6, 4JSA, 4JSS, 4JSW, 4JSZ


• PubMed Abstract: 
  

  An ever-increasing number of metalloproteins are being discovered that play essential roles in physiological processes. Inhibitors of these proteins have significant potential for the treatment of human disease, but clinical success of these compounds has been limited. Herein, zinc(II)-dependent metalloprotein inhibitors in clinical use are reviewed, and the potential for using novel metal-binding groups (MBGs) in the design of these inhibitors is discussed. By using human carbonic anhydrase II as a model system, the nuances of MBG-metal interactions in the context of a protein environment can be probed. Understanding how metal coordination influences inhibitor binding may help in the design of new therapeutics targeting metalloproteins.

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Organizational Affiliation: 
• Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093, United States.

Biological Assembly 1  

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

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

Macromolecule Content 

• Total Structure Weight: 29.63 kDa 
• Atom Count: 2,216 
• Modeled Residue Count: 257 
• Deposited Residue Count: 260 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 2	A	260	Homo sapiens	Mutation(s): 1  Gene Names: CA2 EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens) Explore P00918  Go to UniProtKB:  P00918
PHAROS:  P00918 GTEx:  ENSG00000104267

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FB2	C [auth A], D [auth A]	benzenesulfonamide C6 H7 N O2 S KHBQMWCZKVMBLN-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.230 (Depositor), 0.229 (DCC) 
• R-Value Work:  0.166 (Depositor), 0.167 (DCC) 
• R-Value Observed: 0.170 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.065	α = 90
b = 41.345	β = 104.27
c = 71.959	γ = 90

Software Package:

Software Name	Purpose
APEX	data collection
PHASER	phasing
REFMAC	refinement
APEX	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-06-19 
Deposition Author(s): Martin, D.P., Hann, Z.S., Cohen, S.M.

Revision History  

• Version 1.0: 2013-06-19
  Type: Initial release
  
• Version 1.1: 2013-11-20
  Changes: Database references
• Version 1.2: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description