Crystal structure of CARM1 with EPZ022302 and SAH

Experimental Data Snapshot

  • Resolution: 1.92 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 

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Identification of a CARM1 Inhibitor with Potent In Vitro and In Vivo Activity in Preclinical Models of Multiple Myeloma.

Drew, A.E.Moradei, O.Jacques, S.L.Rioux, N.Boriack-Sjodin, A.P.Allain, C.Scott, M.P.Jin, L.Raimondi, A.Handler, J.L.Ott, H.M.Kruger, R.G.McCabe, M.T.Sneeringer, C.Riera, T.Shapiro, G.Waters, N.J.Mitchell, L.H.Duncan, K.W.Moyer, M.P.Copeland, R.A.Smith, J.Chesworth, R.Ribich, S.A.

(2017) Sci Rep 7: 17993-17993

  • DOI: https://doi.org/10.1038/s41598-017-18446-z
  • Primary Citation of Related Structures:  
    6ARJ, 6ARV

  • PubMed Abstract: 

    CARM1 is an arginine methyltransferase with diverse histone and non-histone substrates implicated in the regulation of cellular processes including transcriptional co-activation and RNA processing. CARM1 overexpression has been reported in multiple cancer types and has been shown to modulate oncogenic pathways in in vitro studies. Detailed understanding of the mechanism of action of CARM1 in oncogenesis has been limited by a lack of selective tool compounds, particularly for in vivo studies. We describe the identification and characterization of, to our knowledge, the first potent and selective inhibitor of CARM1 that exhibits anti-proliferative effects both in vitro and in vivo and, to our knowledge, the first demonstration of a role for CARM1 in multiple myeloma (MM). EZM2302 (GSK3359088) is an inhibitor of CARM1 enzymatic activity in biochemical assays (IC 50  = 6 nM) with broad selectivity against other histone methyltransferases. Treatment of MM cell lines with EZM2302 leads to inhibition of PABP1 and SMB methylation and cell stasis with IC 50 values in the nanomolar range. Oral dosing of EZM2302 demonstrates dose-dependent in vivo CARM1 inhibition and anti-tumor activity in an MM xenograft model. EZM2302 is a validated chemical probe suitable for further understanding the biological role CARM1 plays in cancer and other diseases.

  • Organizational Affiliation

    Epigenetics Discovery Performance Unit, Oncology R&D, GlaxoSmithKline, Collegeville, Pennsylvania, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Histone-arginine methyltransferase CARM1
A, B, C, D
349Homo sapiensMutation(s): 0 
Gene Names: CARM1PRMT4
UniProt & NIH Common Fund Data Resources
Find proteins for Q86X55 (Homo sapiens)
Explore Q86X55 
Go to UniProtKB:  Q86X55
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ86X55
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on BW4

Download Ideal Coordinates CCD File 
F [auth A],
I [auth B],
L [auth C],
P [auth D]
methyl 2-[2-{2-chloro-5-[(2R)-2-hydroxy-3-(methylamino)propoxy]phenyl}-6-(3,5-dimethyl-1,2-oxazol-4-yl)-5-methylpyrimidin-4-yl]-2,7-diazaspiro[3.5]nonane-7-carboxylate
C29 H37 Cl N6 O5
Query on SAH

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B],
K [auth C],
O [auth D]
C14 H20 N6 O5 S
Query on SO4

Download Ideal Coordinates CCD File 
O4 S
Query on GOL

Download Ideal Coordinates CCD File 
G [auth A],
J [auth B],
M [auth C],
Q [auth D],
R [auth D]
C3 H8 O3
Binding Affinity Annotations 
IDSourceBinding Affinity
BW4 Binding MOAD:  6ARJ Ki: 25 (nM) from 1 assay(s)
SAH BindingDB:  6ARJ Ki: min: 400, max: 860 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.92 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.164α = 90
b = 98.802β = 90
c = 208.293γ = 90
Software Package:
Software NamePurpose
Aimlessdata reduction
PDB_EXTRACTdata extraction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-02-07
    Type: Initial release