6IC2

Polypharmacology of Epacadostat: a Potent and Selective Inhibitor of the Tumor Associated Carbonic Anhydrases IX and XII


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.15 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.244 

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This is version 1.1 of the entry. See complete history


Literature

Polypharmacology of epacadostat: a potent and selective inhibitor of the tumor associated carbonic anhydrases IX and XII.

Angeli, A.Ferraroni, M.Nocentini, A.Selleri, S.Gratteri, P.Supuran, C.T.Carta, F.

(2019) Chem Commun (Camb) 55: 5720-5723

  • DOI: 10.1039/c8cc09568j
  • Primary Citation of Related Structures:  
    6IC2

  • PubMed Abstract: 
  • Epacadostat (EPA), a selective indoleamine-2,3-dioxygenase 1 (IDO1) inhibitor, has been investigated in vitro as a human (h) Carbonic Anhydrase Inhibitor (CAI). The kinetic data clearly show, for the first time, EPA to be a highly effective and selective inhibitor for the tumor-associated isoforms hCA IX/XII ...

    Epacadostat (EPA), a selective indoleamine-2,3-dioxygenase 1 (IDO1) inhibitor, has been investigated in vitro as a human (h) Carbonic Anhydrase Inhibitor (CAI). The kinetic data clearly show, for the first time, EPA to be a highly effective and selective inhibitor for the tumor-associated isoforms hCA IX/XII. We report the high resolution X-ray crystal structure of the EPA-hCA II adduct, and assessed its binding mode to CA IX/XII by means of computational techniques. EPA may exert antitumor effects also due to the potent inhibition of the tumor-associated CAs.


    Organizational Affiliation

    University of Florence, NEUROFARBA Dept., Sezione di Farmaceutica e Nutraceutica, Via Ugo Schiff 6, Sesto Fiorentino, 50019, Florence, Italy. claudiu.supuran@unifi.it fabrizio.carta@unifi.it.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Carbonic anhydrase 2A260Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens)
Explore P00918 
Go to UniProtKB:  P00918
PHAROS:  P00918
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BBJ (Subject of Investigation/LOI)
Query on BBJ

Download Ideal Coordinates CCD File 
C [auth A]N-(3-bromo-4-fluorophenyl)-N'-hydroxy-4-{[2-(sulfamoylamino)ethyl]amino}-1,2,5-oxadiazole-3-carboximidamide
C11 H13 Br F N7 O4 S
FBKMWOJEPMPVTQ-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
BBJ Binding MOAD:  6IC2 Ki: 917.4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.15 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.244 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.418α = 90
b = 41.385β = 104.54
c = 72.32γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
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: 2019-05-15
    Type: Initial release
  • Version 1.1: 2019-05-22
    Changes: Data collection, Database references