9Q22 | pdb_00009q22

Crystal structure of ternary complex Helios-ZF2:I-19:CRBN:DDB1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.41 Å
  • R-Value Free: 
    0.252 (Depositor), 0.275 (DCC) 
  • R-Value Work: 
    0.220 (Depositor), 0.232 (DCC) 
  • R-Value Observed: 
    0.222 (Depositor) 

Starting Model: experimental
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Ligand Structure Quality Assessment 


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Literature

Application of Weighted Interaction-Fingerprints for Rationalizing Neosubstrate Potency and Selectivity of Cereblon-Based Molecular Glues.

Luchini, G.Liu, S.Powers, H.L.Cherney, E.Zhu, J.Danga, K.Thompson, J.W.Shi, L.Pagarigan, B.Wei, D.D.Park, P.Degnan, A.P.Zapf, C.W.Riggs, J.R.Johnson, S.Cummins, T.

(2025) J Med Chem 68: 20657-20674

  • DOI: https://doi.org/10.1021/acs.jmedchem.5c01919
  • Primary Citation of Related Structures:  
    9Q22, 9Q2D

  • PubMed Abstract: 

    Cullin-RING Ligase 4 Cereblon (CRL4 CRBN ) (CRBN) E3 ligase modulatory drugs (CELMoDs TM ) make up a successful class of compounds targeting neosubstrates for proteasome-dependent degradation. Early immunomodulatory drugs (IMiDs TM ) target Ikaros and Aiolos degradation. In addition, there are ongoing clinical trials targeting the degradation of biologically relevant proteins such as GSPT1, CK1α, and Helios with CRBN-based molecular glues. To date, most advanced preclinical and clinical CRBN-based molecular glues recruit their neosubstrates through canonical G-motifs, secondary protein features that are structurally similar but have significantly different amino acid sequence identities. Analogous to the development of kinase inhibitors, optimizing both neosubstrate recruitment and degradation selectivity is important to minimize potential off-target activity. Here, we describe a computational structure-based approach to analyze and predict putative ligand interactions important in the neosubstrate ternary complex. This approach provides valuable insights for enhanced designs toward the development of more selective and efficacious CRBN-based molecular glues.


  • Organizational Affiliation
    • Discovery & Development Sciences, Bristol Myers Squibb Company, 10300 Campus Point Drive Suite 100, San Diego, California 92121, United States.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA damage-binding protein 1856Homo sapiensMutation(s): 0 
Gene Names: DDB1XAP1
UniProt & NIH Common Fund Data Resources
Find proteins for Q16531 (Homo sapiens)
Explore Q16531 
Go to UniProtKB:  Q16531
PHAROS:  Q16531
GTEx:  ENSG00000167986 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16531
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Protein cereblon426Homo sapiensMutation(s): 0 
Gene Names: CRBNAD-006
UniProt & NIH Common Fund Data Resources
Find proteins for Q96SW2 (Homo sapiens)
Explore Q96SW2 
Go to UniProtKB:  Q96SW2
PHAROS:  Q96SW2
GTEx:  ENSG00000113851 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96SW2
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Zinc finger protein Helios31Homo sapiensMutation(s): 0 
Gene Names: IKZF2HELIOSZNFN1A2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UKS7 (Homo sapiens)
Explore Q9UKS7 
Go to UniProtKB:  Q9UKS7
PHAROS:  Q9UKS7
GTEx:  ENSG00000030419 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UKS7
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.41 Å
  • R-Value Free:  0.252 (Depositor), 0.275 (DCC) 
  • R-Value Work:  0.220 (Depositor), 0.232 (DCC) 
  • R-Value Observed: 0.222 (Depositor) 
Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 260.24α = 90
b = 260.24β = 90
c = 123.66γ = 120
Software Package:
Software NamePurpose
BUSTERrefinement
STARANISOdata scaling
XDSdata reduction
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other private--

Revision History  (Full details and data files)

  • Version 1.0: 2025-10-01
    Type: Initial release
  • Version 1.1: 2025-10-22
    Changes: Database references