9JK1 | pdb_00009jk1

Crystal structure of CDK12/Cyclin K in complex with covalent inhibitor YJZ5118


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.72 Å
  • R-Value Free: 
    0.267 (Depositor), 0.266 (DCC) 
  • R-Value Work: 
    0.248 (Depositor), 0.249 (DCC) 
  • R-Value Observed: 
    0.249 (Depositor) 

Starting Model: experimental
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Ligand Structure Quality Assessment 


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Literature

Discovery of YJZ5118 : A Potent and Highly Selective Irreversible CDK12/13 Inhibitor with Synergistic Effects in Combination with Akt Inhibition.

Yang, J.Chang, Y.Zhou, K.Huang, W.Tien, J.C.Zhang, P.Liu, W.Zhou, L.Zhou, Y.Ren, X.Mannan, R.Mahapatra, S.Zhang, Y.Hamadeh, R.Ervine, G.Wang, Z.Wang, G.X.Chinnaiyan, A.M.Ding, K.

(2025) J Med Chem 68: 6718-6734

  • DOI: https://doi.org/10.1021/acs.jmedchem.5c00127
  • Primary Citation of Related Structures:  
    9JK1

  • PubMed Abstract: 

    Cyclin-dependent kinases 12 and 13 (CDK12/13) have emerged as promising therapeutic targets for castration-resistant prostate cancer (CRPC) and other human cancers. Despite the development of several CDK12/13 inhibitors, challenges remain in achieving an optimal balance of potency, selectivity and pharmacokinetic properties. Here, we report the discovery of YJZ5118 , a novel, potent and highly selective covalent inhibitor of CDK12/13 with reasonable pharmacokinetic profiles. YJZ5118 effectively inhibited CDK12 and CDK13 with IC 50 values of 39.5 and 26.4 nM, respectively, while demonstrating high selectivity over other CDKs. Mass spectrometry analysis, cocrystal structure determination, and pulldown-proteomic experiments confirmed the compound's covalent binding mode with CDK12/13. Functionally, YJZ5118 efficiently suppressed the transcription of DNA damage response genes, induced DNA damage, and triggered apoptosis. Moreover, the compound significantly inhibited the proliferation of multiple tumor cell lines, particularly prostate cancer cells. Notably, YJZ5118 exhibited synergistic effects with Akt inhibitors both in vitro and in vivo.


  • Organizational Affiliation
    • State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, #345 Lingling Road, Shanghai 200032, China.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cyclin-dependent kinase 12A,
C [auth B]
340Homo sapiensMutation(s): 0 
Gene Names: CDK12CRK7CRKRSKIAA0904
EC: 2.7.11.22 (PDB Primary Data), 2.7.11.23 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NYV4 (Homo sapiens)
Explore Q9NYV4 
Go to UniProtKB:  Q9NYV4
PHAROS:  Q9NYV4
GTEx:  ENSG00000167258 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NYV4
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Cyclin-KB [auth D],
D [auth C]
269Homo sapiensMutation(s): 0 
Gene Names: CCNKCPR4
UniProt & NIH Common Fund Data Resources
Find proteins for O75909 (Homo sapiens)
Explore O75909 
Go to UniProtKB:  O75909
PHAROS:  O75909
GTEx:  ENSG00000090061 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75909
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
A1EB3 (Subject of Investigation/LOI)
Query on A1EB3

Download Ideal Coordinates CCD File 
F [auth A],
I [auth B]
N-[5-[[4-[(5-cyanopyridin-2-yl)amino]cyclohexyl]-[(phenylmethyl)carbamoyl]amino]-2-[4-(dimethylamino)piperidin-1-yl]phenyl]propanamide
C36 H46 N8 O2
BEJXVXHICMPJRP-UNWRIRMBSA-N
PEG
Query on PEG

Download Ideal Coordinates CCD File 
J [auth C]DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
E [auth A],
H [auth D]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
G [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
TPO
Query on TPO
A,
C [auth B]
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.72 Å
  • R-Value Free:  0.267 (Depositor), 0.266 (DCC) 
  • R-Value Work:  0.248 (Depositor), 0.249 (DCC) 
  • R-Value Observed: 0.249 (Depositor) 
Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.2α = 75.88
b = 77.19β = 85.63
c = 91.46γ = 77.92
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China32071446

Revision History  (Full details and data files)

  • Version 1.0: 2025-05-07
    Type: Initial release