8QH8 | pdb_00008qh8

Human Carbonic Anhydrase II in complex with Lasamide (2,4-Dichloro 5-sulfamoyl benzoic acid)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.04 Å
  • R-Value Free: 
    0.137 (Depositor), 0.136 (DCC) 
  • R-Value Work: 
    0.118 (Depositor), 0.119 (DCC) 
  • R-Value Observed: 
    0.119 (Depositor) 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Lasamide, a Potent Human Carbonic Anhydrase Inhibitor from the Market: Inhibition Profiling and Crystallographic Studies.

Baroni, C.D'Agostino, I.Renzi, G.Kilbile, J.T.Tamboli, Y.Ferraroni, M.Carradori, S.Capasso, C.Carta, F.Supuran, C.T.

(2024) ACS Med Chem Lett 15: 1749-1755

  • DOI: https://doi.org/10.1021/acsmedchemlett.4c00341
  • Primary Citation of Related Structures:  
    8QH8, 8QHG, 8QHJ

  • PubMed Abstract: 

    Lasamide is a synthetic precursor and a contaminant of the diuretic Furosemide manufacturing process and represents a highly valuable building block for fragment-based drug discovery approaches. We assessed the ability of Lasamide to inhibit in vitro the human-expressed Carbonic Anhydrases by means of the stopped-flow technique, and we assessed its binding modes within hCAs II and XII-mimic catalytic clefts by X-ray crystallography. Interestingly, an unprecedented crystal form for the hCA IX mimic H-tag is reported and discussed herein.


  • Organizational Affiliation
    • Department of Chemistry "Ugo Schiff", University of Florence, 50019, Sesto Fiorentino, Florence, Italy.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Carbonic anhydrase 2260Homo sapiensMutation(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 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00918
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.04 Å
  • R-Value Free:  0.137 (Depositor), 0.136 (DCC) 
  • R-Value Work:  0.118 (Depositor), 0.119 (DCC) 
  • R-Value Observed: 0.119 (Depositor) 
Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.28α = 90
b = 41.3β = 104.37
c = 72.22γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XSCALEdata scaling
XDSdata reduction
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Union (EU)European UnionB83C22003920001

Revision History  (Full details and data files)

  • Version 1.0: 2024-09-18
    Type: Initial release
  • Version 1.1: 2025-10-01
    Changes: Database references, Structure summary