4XS3

Crystal structure of a metabolic reductase with (E)-1-benzyl-5-((1-methyl-5-oxo-2-thioxoimidazolidin-4-ylidene)methyl)pyridin-2(1H)-one


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.29 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.229 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Inhibition of Cancer-Associated Mutant Isocitrate Dehydrogenases by 2-Thiohydantoin Compounds.

Wu, F.Jiang, H.Zheng, B.Kogiso, M.Yao, Y.Zhou, C.Li, X.N.Song, Y.

(2015) J Med Chem 58: 6899-6908

  • DOI: 10.1021/acs.jmedchem.5b00684
  • Primary Citation of Related Structures:  
    4XRX, 4XS3

  • PubMed Abstract: 
  • Somatic mutations of isocitrate dehydrogenase 1 (IDH1) at R132 are frequently found in certain cancers such as glioma. With losing the activity of wild-type IDH1, the R132H and R132C mutant proteins can reduce α-ketoglutaric acid (α-KG) to d-2-hydroxyglu ...

    Somatic mutations of isocitrate dehydrogenase 1 (IDH1) at R132 are frequently found in certain cancers such as glioma. With losing the activity of wild-type IDH1, the R132H and R132C mutant proteins can reduce α-ketoglutaric acid (α-KG) to d-2-hydroxyglutaric acid (D2HG). The resulting high concentration of D2HG inhibits many α-KG-dependent dioxygenases, including histone demethylases, to cause broad histone hypermethylation. These aberrant epigenetic changes are responsible for the initiation of these cancers. We report the synthesis, structure-activity relationships, enzyme kinetics, and binding thermodynamics of a novel series of 2-thiohydantoin and related compounds, among which several compounds are potent inhibitors of mutant IDH1 with Ki as low as 420 nM. X-ray crystal structures of IDH1(R132H) in complex with two inhibitors are reported, showing their inhibitor-protein interactions. These compounds can decrease the cellular concentration of D2HG, reduce the levels of histone methylation, and suppress the proliferation of stem-like cancer cells in BT142 glioma with IDH1 R132H mutation.


    Organizational Affiliation

    Dan L. Duncan Cancer Center, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX 77030, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Isocitrate dehydrogenase [NADP] cytoplasmic AB414Homo 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 2 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
42W
Query on 42W

Download Ideal Coordinates CCD File 
A, B
(E)-1-benzyl-5-((1-methyl-5-oxo-2-thioxoimidazolidin-4-ylidene)methyl)pyridin-2(1H)-one
C17 H15 N3 O2 S
ORESZEYKAHLKRD-NTEUORMPSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
42WKi:  12500   nM  BindingDB
42WKi:  4600   nM  BindingDB
42WKi:  32900   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.29 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.229 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.586α = 90
b = 82.586β = 90
c = 306.599γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
StructureStudiodata collection
HKL-2000data scaling
HKL-2000data reduction
PHASESphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Cancer Prevention and Research Institute of Texas (CPRIT)United StatesRP140469
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United StatesR01NS080963

Revision History 

  • Version 1.0: 2016-07-27
    Type: Initial release
  • Version 1.1: 2017-09-13
    Changes: Author supporting evidence, Database references, Derived calculations
  • Version 1.2: 2019-04-24
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2019-12-18
    Changes: Author supporting evidence