4FL7

The crystal structure of human carbonic anhydrase II in complex with N-(Hydroxy)-benzamide

• PDB DOI: https://doi.org/10.2210/pdb4FL7/pdb

• Classification: LYASE
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2012-06-14 Released: 2012-08-15 
• Deposition Author(s): Di Fiore, A., De Simone, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.203 
• R-Value Work: 0.163 

Starting Model: experimental

Literature

Hydroxamate represents a versatile zinc binding group for the development of new carbonic anhydrase inhibitors.

Di Fiore, A., Maresca, A., Supuran, C.T., De Simone, G.

(2012) Chem Commun (Camb) 48: 8838-8840

• PubMed: 22836518 
• DOI: https://doi.org/10.1039/c2cc34275h
• Primary Citation of Related Structures:  
  4FL7


• PubMed Abstract: 
  

  Hydroxamates (R-CONHOH) have been scarcely investigated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors (CAIs). An inhibition/structural study of PhCONHOH is reported against all human isoforms. Comparing aliphatic (R = Me and CF(3)) and aromatic (R = Ph) hydroxamates as CAIs, we prove that CONHOH is a versatile zinc binding group. Depending on the nature of the R moiety, it can adopt different coordination modes to the catalytic ion within the CA active site.

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Organizational Affiliation: 

Istituto di Biostrutture e Bioimmagini - CNR, Napoli, Italy.

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: 29.87 kDa 
• Atom Count: 2,403 
• Modelled Residue Count: 257 
• Deposited Residue Count: 259 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Carbonic anhydrase 2	A	259	Homo sapiens	Mutation(s): 0  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 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MBO	F [auth A]	MERCURIBENZOIC ACID C7 H5 Hg O2 FVFZSVRSDNUCGG-UHFFFAOYSA-N
BHO	E [auth A]	BENZHYDROXAMIC ACID C7 H7 N O2 VDEUYMSGMPQMIK-UHFFFAOYSA-N
GOL	C [auth A], D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.203 
• R-Value Work: 0.163 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.16	α = 90
b = 41.5	β = 104.39
c = 71.99	γ = 90

Software Package:

Software Name	Purpose
CrystalClear	data collection
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-08-15 
Deposition Author(s): Di Fiore, A., De Simone, G.

Revision History  

• Version 1.0: 2012-08-15
  Type: Initial release
  
• Version 1.1: 2012-08-22
  Changes: Database references
• Version 1.2: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description