6NJS

Stat3 Core in complex with compound SD36

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 

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Ligand Structure Quality Assessment 


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Literature

A Potent and Selective Small-Molecule Degrader of STAT3 Achieves Complete Tumor Regression In Vivo.

Bai, L., Zhou, H., Xu, R., Zhao, Y., Chinnaswamy, K., McEachern, D., Chen, J., Yang, C.Y., Liu, Z., Wang, M., Liu, L., Jiang, H., Wen, B., Kumar, P., Meagher, J.L., Sun, D., Stuckey, J.A., Wang, S.

(2019) Cancer Cell 36: 498-511.e17

  • DOI: 10.1016/j.ccell.2019.10.002
  • Primary Citation of Related Structures:  
    6NJS, 6NUQ

  • PubMed Abstract: 

    • Signal transducer and activator of transcription 3 (STAT3) is an attractive cancer therapeutic target. Here we report the discovery of SD-36, a small-molecule degrader of STAT3. SD-36 potently induces the degradation of STAT3 protein in vitro and in vivo and demonstrates high selectivity over other STAT members ...

    Signal transducer and activator of transcription 3 (STAT3) is an attractive cancer therapeutic target. Here we report the discovery of SD-36, a small-molecule degrader of STAT3. SD-36 potently induces the degradation of STAT3 protein in vitro and in vivo and demonstrates high selectivity over other STAT members. Induced degradation of STAT3 results in a strong suppression of its transcription network in leukemia and lymphoma cells. SD-36 inhibits the growth of a subset of acute myeloid leukemia and anaplastic large-cell lymphoma cell lines by inducing cell-cycle arrest and/or apoptosis. SD-36 achieves complete and long-lasting tumor regression in multiple xenograft mouse models at well-tolerated dose schedules. Degradation of STAT3 protein, therefore, is a promising cancer therapeutic strategy.

    Organizational Affiliation: 

    Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109, USA; Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA; Department of Pharmacology, University of Michigan, Ann Arbor, MI 48109, USA; Department of Medicinal Chemistry, University of Michigan, Ann Arbor, MI 48109, USA. Electronic address: shaomeng@umich.edu.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Signal transducer and activator of transcription 3A562Homo sapiensMutation(s): 0 
Gene Names: STAT3, APRF
UniProt & NIH Common Fund Data Resources
Find proteins for P40763 (Homo sapiens)
Explore P40763 
Go to UniProtKB:  P40763
PHAROS:  P40763
GTEx:  ENSG00000168610 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP40763
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
KQV (Subject of Investigation/LOI)
Query on KQV
Download Ideal Coordinates CCD File 
B [auth A][(2-{[(5S,8S,10aR)-3-acetyl-8-({(2S)-5-amino-1-[(diphenylmethyl)amino]-1,5-dioxopentan-2-yl}carbamoyl)-6-oxodecahydropyrrolo[1,2-a][1,5]diazocin-5-yl]carbamoyl}-1H-indol-5-yl)(difluoro)methyl]phosphonic acid (non-preferred name)
C40 H44 F2 N7 O9 P
HBICZHLVBCLHSV-VUCLUUCHSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84α = 90
b = 84β = 90
c = 206.31γ = 90
Software Package:
Software NamePurpose
HKL-2000data scaling
BUSTERrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-04
    Type: Initial release