The crystal structure of the human carbonic anhydrase XIV in complex with a 1,1'-biphenyl-4-sulfonamide inhibitor.

Experimental Data Snapshot

  • Resolution: 1.83 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.196 

Starting Model: experimental
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Discovery of 1,1'-Biphenyl-4-sulfonamides as a New Class of Potent and Selective Carbonic Anhydrase XIV Inhibitors.

La Regina, G.Coluccia, A.Famiglini, V.Pelliccia, S.Monti, L.Vullo, D.Nuti, E.Alterio, V.De Simone, G.Monti, S.M.Pan, P.Parkkila, S.Supuran, C.T.Rossello, A.Silvestri, R.

(2015) J Med Chem 58: 8564-8572

  • DOI: https://doi.org/10.1021/acs.jmedchem.5b01144
  • Primary Citation of Related Structures:  
    5CJF, 5E2R

  • PubMed Abstract: 

    New 1,1'-biphenylsulfonamides were synthesized and evaluated as inhibitors of the ubiquitous human carbonic anhydrase isoforms I, II, IX, XII, and XIV using acetazolamide (AAZ) as reference compound. The sulfonamides 1-21 inhibited all the isoforms, with Ki values in the nanomolar range of concentration, and were superior to AAZ against all of them. X-ray crystallography and molecular modeling studies on the adducts that compound 20, the most potent hCA XIV inhibitor of the series (Ki = 0.26 nM), formed with the five hCAs, provided insight into the molecular determinants responsible for the high affinity of this molecule toward the target enzymes. The results pave the way to the development of 1.1'-biphenylsulfonamides as a new class of highy potent hCA XIV inhibitors.

  • Organizational Affiliation

    Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma , Piazzale Aldo Moro 5, I-00185 Roma, Italy.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Carbonic anhydrase 14279Homo sapiensMutation(s): 0 
Gene Names: CA14UNQ690/PRO1335
UniProt & NIH Common Fund Data Resources
Find proteins for Q9ULX7 (Homo sapiens)
Explore Q9ULX7 
Go to UniProtKB:  Q9ULX7
GTEx:  ENSG00000118298 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9ULX7
Glycosylation Sites: 1Go to GlyGen: Q9ULX7-1
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G22768VO
GlyCosmos:  G22768VO
GlyGen:  G22768VO
Experimental Data & Validation

Experimental Data

  • Resolution: 1.83 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.196 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.495α = 90
b = 88.495β = 90
c = 108.736γ = 90
Software Package:
Software NamePurpose
d*TREKdata scaling
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-11-04
    Type: Initial release
  • Version 1.1: 2015-11-25
    Changes: Database references
  • Version 1.2: 2015-12-02
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2024-01-10
    Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary