5OGP

Metalacarborane inhibitors of Carbonic Anhydrase IX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.150 
  • R-Value Work: 0.124 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Metallacarborane Sulfamides: Unconventional, Specific, and Highly Selective Inhibitors of Carbonic Anhydrase IX.

Gruner, B.Brynda, J.Das, V.Sicha, V.Stepankova, J.Nekvinda, J.Holub, J.Pospisilova, K.Fabry, M.Pachl, P.Kral, V.Kugler, M.Masek, V.Medvedikova, M.Matejkova, S.Nova, A.Liskova, B.Gurska, S.Dzubak, P.Hajduch, M.Rezacova, P.

(2019) J.Med.Chem. --: --

  • DOI: 10.1021/acs.jmedchem.9b00945
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Carbonic anhydrase IX (CAIX) is a transmembrane enzyme that regulates pH in hypoxic tumors and promotes tumor cell survival. Its expression is associated with the occurrence of metastases and poor prognosis. Here, we present nine derivatives of the c ...

    Carbonic anhydrase IX (CAIX) is a transmembrane enzyme that regulates pH in hypoxic tumors and promotes tumor cell survival. Its expression is associated with the occurrence of metastases and poor prognosis. Here, we present nine derivatives of the cobalt bis(dicarbollide)(1-) anion substituted at the boron or carbon sites by alkysulfamide group(s) as highly specific and selective inhibitors of CAIX. Interactions of these compounds with the active site of CAIX were explored on the atomic level using protein crystallography. Two selected derivatives display subnanomolar or picomolar inhibition constants and high selectivity for the tumor-specific CAIX over cytosolic isoform CAII. Both derivatives had a time-dependent effect on the growth of multicellular spheroids of HT-29 and HCT116 colorectal cancer cells, facilitated penetration and/or accumulation of doxorubicin into spheroids, and displayed low toxicity and showed promising pharmacokinetics and a significant inhibitory effect on tumor growth in syngenic breast 4T1 and colorectal HT-29 cancer xenotransplants.


    Organizational Affiliation

    Institute of Molecular and Translational Medicine , Olomouc, Hněvotínská 1333/5 , 77900 Olomouc , Czech Republic.,Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo nám. 2 , 16610 Prague , Czech Republic.,Department of Organic Chemistry, Faculty of Natural Science , Charles University , Hlavova 2030 , 12800 Prague 2, Czech Republic.,Institute of Molecular Genetics of the Czech Academy of Sciences , Flemingovo nam. 2 , 16610 Prague , Czech Republic.,Cancer Research Czech Republic , Hněvotínská 5 , 77900 Olomouc , Czech Republic.,Institute of Inorganic Chemistry of the Czech Academy of Sciences , 250 68 Řež , Czech Republic.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 2
A
259Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
Find proteins for P00918 (Homo sapiens)
Go to Gene View: CA2
Go to UniProtKB:  P00918
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
9UK
Query on 9UK

Download SDF File 
Download CCD File 
A
cobaltcarborane
C5 H5 B18 Co N2 O2 S
PEWSPLOUYVACJS-IPBARVNRSA-N
 Ligand Interaction
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.150 
  • R-Value Work: 0.124 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 41.835α = 90.00
b = 41.231β = 103.95
c = 72.395γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
XSCALEdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
GACR Czech Science FoundationCzech RepublicGA15-05677S

Revision History 

  • Version 1.0: 2018-08-01
    Type: Initial release
  • Version 1.1: 2019-11-13
    Type: Database references