7NEX

Crystal structure of alpha Carbonic anhydrase from Schistosoma mansoni bound to 1-(4-fluorophenyl)-3-(4-sulfamoylph enyl)thiourea


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Structural Insights into Schistosoma mansoni Carbonic Anhydrase (SmCA) Inhibition by Selenoureido-Substituted Benzenesulfonamides.

Angeli, A.Ferraroni, M.Da'dara, A.A.Selleri, S.Pinteala, M.Carta, F.Skelly, P.J.Supuran, C.T.

(2021) J Med Chem 64: 10418-10428

  • DOI: https://doi.org/10.1021/acs.jmedchem.1c00840
  • Primary Citation of Related Structures:  
    6QQM, 7BFA, 7BG5, 7BHH, 7BM4, 7NEX, 7NG1, 7NWY, 7O2S, 7O48, 7OA1

  • PubMed Abstract: 

    Tegumental carbonic anhydrase from the worm Schistosoma mansoni (SmCA) is considered a new anti-parasitic target because suppressing its expression interferes with schistosome metabolism and virulence. Here, we present the inhibition profiles of selenoureido compounds on recombinant SmCA and resolution of the first X-ray crystal structures of SmCA in adduct with a selection of such inhibitors. The key molecular features of such compounds in adduct with SmCA were obtained and compared to the human isoform hCA II, in order to understand the main structural factors responsible for enzymatic affinity and selectivity. Compounds that more specifically inhibited the schistosome versus human enzymes were identified. The results expand current knowledge in the field and pave the way for the development of more potent antiparasitic agents in the near future.


  • Organizational Affiliation

    NEUROFARBA Department, Sezione di Scienze Farmaceutiche, University of Florence, Via Ugo Schiff 6, Sesto Fiorentino, 50019 Florence, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Carbonic anhydrase
A, B
332Schistosoma mansoniMutation(s): 0 
EC: 4.2.1.1
UniProt
Find proteins for A0A3Q0KSG2 (Schistosoma mansoni)
Explore A0A3Q0KSG2 
Go to UniProtKB:  A0A3Q0KSG2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A3Q0KSG2
Glycosylation
Glycosylation Sites: 2
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseC [auth G],
D [auth C],
E [auth D]
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
8JS (Subject of Investigation/LOI)
Query on 8JS

Download Ideal Coordinates CCD File 
I [auth A],
L [auth B]
4-{[(4-fluorophenyl)carbamothioyl]amino}benzene-1-sulfonamide
C13 H12 F N3 O2 S2
VUDOFEJVAFMLEC-UHFFFAOYSA-N
NAG
Query on NAG

Download Ideal Coordinates CCD File 
F [auth A],
J [auth B]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
H [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
G [auth A],
K [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.8α = 90
b = 103.8β = 90
c = 133.03γ = 120
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2022-03-02
    Type: Initial release
  • Version 1.1: 2022-05-04
    Changes: Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Refinement description
  • Version 1.3: 2024-11-20
    Changes: Structure summary