6O2Z

Crystal structure of IDH1 R132H mutant in complex with compound 32


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.175 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Discovery and Optimization of Quinolinone Derivatives as Potent, Selective, and Orally Bioavailable Mutant Isocitrate Dehydrogenase 1 (mIDH1) Inhibitors.

Lin, J.Lu, W.Caravella, J.A.Campbell, A.M.Diebold, R.B.Ericsson, A.Fritzen, E.Gustafson, G.R.Lancia Jr., D.R.Shelekhin, T.Wang, Z.Castro, J.Clarke, A.Gotur, D.Josephine, H.R.Katz, M.Diep, H.Kershaw, M.Yao, L.Kauffman, G.Hubbs, S.E.Luke, G.P.Toms, A.V.Wang, L.Bair, K.W.Barr, K.J.Dinsmore, C.Walker, D.Ashwell, S.

(2019) J Med Chem 62: 6575-6596

  • DOI: 10.1021/acs.jmedchem.9b00362
  • Primary Citation of Related Structures:  
    6O2Z, 6O2Y

  • PubMed Abstract: 
  • Mutations at the arginine residue (R132) in isocitrate dehydrogenase 1 (IDH1) are frequently identified in various human cancers. Inhibition of mutant IDH1 (mIDH1) with small molecules has been clinically validated as a promising therapeutic treatment fo ...

    Mutations at the arginine residue (R132) in isocitrate dehydrogenase 1 (IDH1) are frequently identified in various human cancers. Inhibition of mutant IDH1 (mIDH1) with small molecules has been clinically validated as a promising therapeutic treatment for acute myeloid leukemia and multiple solid tumors. Herein, we report the discovery and optimization of a series of quinolinones to provide potent and orally bioavailable mIDH1 inhibitors with selectivity over wild-type IDH1. The X-ray structure of an early lead 24 in complex with mIDH1-R132H shows that the inhibitor unexpectedly binds to an allosteric site. Efforts to improve the in vitro and in vivo absorption, distribution, metabolism, and excretion (ADME) properties of 24 yielded a preclinical candidate 63 . The detailed preclinical ADME and pharmacology studies of 63 support further development of quinolinone-based mIDH1 inhibitors as therapeutic agents in human trials.


    Organizational Affiliation

    Forma Therapeutics, Inc. , 500 Arsenal Street, Suite 100 , Watertown , Massachusetts 02472 , United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Isocitrate dehydrogenase [NADP] cytoplasmic AB425Homo sapiensMutation(s): 1 
Gene Names: IDH1PICD
EC: 1.1.1.42
Find proteins for O75874 (Homo sapiens)
Explore O75874 
Go to UniProtKB:  O75874
NIH Common Fund Data Resources
PHAROS:  O75874
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download Ideal Coordinates CCD File 
A, B
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
LJV
Query on LJV

Download Ideal Coordinates CCD File 
A, B
6-{[(6-chloro-2-oxo-1,2-dihydroquinolin-3-yl)methyl]amino}-2-methylpyridine-3-carbonitrile
C17 H13 Cl N4 O
BPIFALCAPCGTGS-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
A, B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
LJVIC50:  72   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.175 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.344α = 90
b = 82.344β = 90
c = 303.74γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2019-02-25 
  • Released Date: 2019-06-26 
  • Deposition Author(s): Toms, A.V., Lin, J.

Revision History 

  • Version 1.0: 2019-06-26
    Type: Initial release
  • Version 1.1: 2019-08-07
    Changes: Data collection, Database references