5JQ0

Crystal structure of human carbonic anhydrase II in complex with Benzoxaborole at pH=8.7

• PDB DOI: https://doi.org/10.2210/pdb5JQ0/pdb

• Classification: LYASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2016-05-04 Released: 2016-10-19 
• Deposition Author(s): Alterio, V., Esposito, D., Di Fiore, A., De Simone, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.146 
• R-Value Work: 0.105 
• R-Value Observed: 0.107 

Starting Model: experimental

Literature

Benzoxaborole as a new chemotype for carbonic anhydrase inhibition.

Alterio, V., Cadoni, R., Esposito, D., Vullo, D., Fiore, A.D., Monti, S.M., Caporale, A., Ruvo, M., Sechi, M., Dumy, P., Supuran, C.T., Simone, G., Winum, J.Y.

(2016) Chem Commun (Camb) 52: 11983-11986

• PubMed: 27722534 
• DOI: https://doi.org/10.1039/c6cc06399c
• Primary Citation of Related Structures:  
  5JQ0, 5JQT, 5LMD


• PubMed Abstract: 
  

  In this paper we report the synthesis of a series of benzoxaborole derivatives, their inhibition properties against some carbonic anhydrases (CAs), recognized as important drug targets, and the characterization of the binding mode of these molecules to the CA active site. Our data provide the first experimental evidence that benzoxaboroles can be efficiently used as CA inhibitors.

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Organizational Affiliation: 

Istituto di Biostrutture e Bioimagini-CNR, Naples, Italy. [e-mail].

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 29.69 kDa 
• Atom Count: 2,414 
• Modelled Residue Count: 257 
• Deposited Residue Count: 262 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 2	A	262	Homo sapiens	Mutation(s): 0  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
6M4	C [auth A]	1,1-dihydroxy-1,3-dihydro-2,1-benzoxaborol-1-ium C7 H8 B O3 LFYLOXDIRWAWMG-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.146 
• R-Value Work: 0.105 
• R-Value Observed: 0.107 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.35	α = 90
b = 41.19	β = 104.4
c = 72.03	γ = 90

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
REFMAC	phasing
CrystalClear	data collection
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-10-19 
Deposition Author(s): Alterio, V., Esposito, D., Di Fiore, A., De Simone, G.

Revision History  

• Version 1.0: 2016-10-19
  Type: Initial release
  
• Version 2.0: 2019-10-30
  Changes: Data collection, Non-polymer description
• Version 2.1: 2024-01-10
  Changes: Data collection, Database references, Refinement description