5V3O

Cereblon in complex with DDB1 and CC-220


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

A Cereblon Modulator (CC-220) with Improved Degradation of Ikaros and Aiolos.

Matyskiela, M.E.Zhang, W.Man, H.W.Muller, G.Khambatta, G.Baculi, F.Hickman, M.LeBrun, L.Pagarigan, B.Carmel, G.Lu, C.C.Lu, G.Riley, M.Satoh, Y.Schafer, P.Daniel, T.O.Carmichael, J.Cathers, B.E.Chamberlain, P.P.

(2018) J Med Chem 61: 535-542

  • DOI: 10.1021/acs.jmedchem.6b01921
  • Primary Citation of Related Structures:  
    5V3O

  • PubMed Abstract: 
  • The drugs lenalidomide and pomalidomide bind to the protein cereblon, directing the CRL4-CRBN E3 ligase toward the transcription factors Ikaros and Aiolos to cause their ubiquitination and degradation. Here we describe CC-220 (compound 6), a cereblon modulator in clinical development for systemic lupus erythematosis and relapsed/refractory multiple myeloma ...

    The drugs lenalidomide and pomalidomide bind to the protein cereblon, directing the CRL4-CRBN E3 ligase toward the transcription factors Ikaros and Aiolos to cause their ubiquitination and degradation. Here we describe CC-220 (compound 6), a cereblon modulator in clinical development for systemic lupus erythematosis and relapsed/refractory multiple myeloma. Compound 6 binds cereblon with a higher affinity than lenalidomide or pomalidomide. Consistent with this, the cellular degradation of Ikaros and Aiolos is more potent and the extent of substrate depletion is greater. The crystal structure of cereblon in complex with DDB1 and compound 6 reveals that the increase in potency correlates with increased contacts between compound 6 and cereblon away from the modeled binding site for Ikaros/Aiolos. These results describe a new cereblon modulator which achieves greater substrate degradation via tighter binding to the cereblon E3 ligase and provides an example of the effect of E3 ligase binding affinity with relevance to other drug discovery efforts in targeted protein degradation.


    Organizational Affiliation

    1Celgene Corporation , 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
MoleculeChainsSequence LengthOrganismDetailsImage
DNA damage-binding protein 1A1140Homo 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
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein cereblonB [auth C]406Homo 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
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8W7
Query on 8W7

Download Ideal Coordinates CCD File 
C (3S)-3-[4-({4-[(morpholin-4-yl)methyl]phenyl}methoxy)-1-oxo-1,3-dihydro-2H-isoindol-2-yl]piperidine-2,6-dione
C25 H27 N3 O5
IXZOHGPZAQLIBH-NRFANRHFSA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
D [auth C]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
8W7 BindingDB:  5V3O Ki: 4940 (nM) from 1 assay(s)
IC50: min: 60, max: 1.60e+4 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 111.029α = 90
b = 126.886β = 90
c = 172.487γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-05-03
    Type: Initial release
  • Version 1.1: 2018-02-07
    Changes: Database references