7PLF | pdb_00007plf

Human Carbonic Anhydrase I in complex with clorsulon


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.46 Å
  • R-Value Free: 
    0.205 (Depositor), 0.210 (DCC) 
  • R-Value Work: 
    0.177 (Depositor), 0.185 (DCC) 

Starting Model: experimental
View more details

wwPDB Validation 3D Report Full Report

Validation slider image for 7PLF

Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history

Literature

Inhibition of Schistosoma mansoni carbonic anhydrase by the antiparasitic drug clorsulon: X-ray crystallographic and in vitro studies.

Ferraroni, M.Angeli, A.Carradori, S.Supuran, C.T.

(2022) Acta Crystallogr D Struct Biol 78: 321-327

  • DOI: https://doi.org/10.1107/S2059798322000079
  • Primary Citation Related Structures: 
    7PLF, 7PRI

  • PubMed Abstract: 

    Clorsulon is an anthelmintic drug that is clinically used against Fasciola hepatica. Due to the presence of two sulfonamide moieties in its core nucleus, which are well recognized as zinc-binding groups, it was proposed that it may be efficacious in the inhibition of parasite carbonic anhydrases (CAs). Proteomic analyses revealed the presence of CA in the tegument of Schistosoma mansoni, and recently the druggability of this target was explored by testing the inhibitory activities of several sulfonamide-based derivatives. According to the principles of drug repurposing, the aim was to demonstrate a putative new mechanism of action of clorsulon and thus widen its antiparasitic spectrum. For this purpose, the inhibitory activity and isoform selectivity of clorsulon was studied using human CA I and S. mansoni CA, revealing different modes of binding of clorsulon that explain its inhibitory potency against the two enzymes. The information obtained in this study could be crucial in the design of more active and selective derivatives.


  • Organizational Affiliation
    • Dipartimento di Chimica `Ugo Schiff', University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy.

Macromolecule Content 

  • Total Structure Weight: 58.7 kDa 
  • Atom Count: 4,524 
  • Modeled Residue Count: 515 
  • Deposited Residue Count: 522 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Carbonic anhydrase 1A [auth AAA],
B [auth BBB]
261Homo sapiensMutation(s): 0 
Gene Names: CA1
EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P00915 (Homo sapiens)
Explore P00915 
Go to UniProtKB:  P00915
PHAROS:  P00915
GTEx:  ENSG00000133742 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00915
Sequence Annotations
Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.46 Å
  • R-Value Free:  0.205 (Depositor), 0.210 (DCC) 
  • R-Value Work:  0.177 (Depositor), 0.185 (DCC) 
Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.27α = 90
b = 71.34β = 90
c = 121.41γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-07
    Type: Initial release
  • Version 1.1: 2023-03-22
    Changes: Database references
  • Version 1.2: 2024-02-07
    Changes: Data collection, Refinement description