5D9L

Rsk2 N-terminal Kinase in Complex with bis-phenol pyrazole

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.168 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history. 


Literature

Discovery of Potent and Selective RSK Inhibitors as Biological Probes.

Jain, R., Mathur, M., Lan, J., Costales, A., Atallah, G., Ramurthy, S., Subramanian, S., Setti, L., Feucht, P., Warne, B., Doyle, L., Basham, S., Jefferson, A.B., Lindvall, M., Appleton, B.A., Shafer, C.M.

(2015) J Med Chem 58: 6766-6783

  • DOI: 10.1021/acs.jmedchem.5b00450
  • Primary Citation of Related Structures:  
    5D9K, 5D9L

  • PubMed Abstract: 

    • While the p90 ribosomal S6 kinase (RSK) family has been implicated in multiple tumor cell functions, the full understanding of this kinase family has been restricted by the lack of highly selective inhibitors. A bis-phenol pyrazole was identified from high-throughput screening as an inhibitor of the N-terminal kinase of RSK2 ...

    While the p90 ribosomal S6 kinase (RSK) family has been implicated in multiple tumor cell functions, the full understanding of this kinase family has been restricted by the lack of highly selective inhibitors. A bis-phenol pyrazole was identified from high-throughput screening as an inhibitor of the N-terminal kinase of RSK2. Structure-based drug design using crystallography, conformational analysis, and scaffold morphing resulted in highly optimized difluorophenol pyridine inhibitors of the RSK kinase family as demonstrated cellularly by the inhibition of YB1 phosphorylation. These compounds provide for the first time in vitro tools with an improved selectivity and potency profile to examine the importance of RSK signaling in cancer cells and to fully evaluate RSK as a therapeutic target.

    Related Citations: 
    • Novel potent and selective inhibitors of p90 ribosomal S6 kinase reveal the heterogeneity of RSK function in MAPK-driven cancers.
      Aronchik, I., Appleton, B.A., Basham, S.E., Crawford, K., Del Rosario, M., Doyle, L.V., Estacio, W.F., Lan, J., Lindvall, M.K., Luu, C.A., Ornelas, E., Venetsanakos, E., Shafer, C.M., Jefferson, A.B.
      (2014) Mol Cancer Res 12: 803
    Organizational Affiliation: 

    Global Discovery Chemistry/Oncology & Exploratory Chemistry, Novartis Institutes for Biomedical Research , 5300 Chiron Way, Emeryville, California 94608, United States.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ribosomal protein S6 kinase alpha-3A323Homo sapiensMutation(s): 0 
Gene Names: RPS6KA3, ISPK1, MAPKAPK1B, RSK2
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for P51812 (Homo sapiens)
Explore P51812 
Go to UniProtKB:  P51812
PHAROS:  P51812
GTEx:  ENSG00000177189 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51812
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
583
Query on 583
Download Ideal Coordinates CCD File 
B [auth A]4,4'-(1H-pyrazole-3,4-diyl)diphenol
C15 H12 N2 O2
FHGTUVGVZRNUDB-UHFFFAOYSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
C [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
583 Binding MOAD:  5D9L IC50: 24 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.168 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.45α = 90
b = 58.59β = 100.64
c = 78.57γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

  • Deposited Date: 2015-08-18 
  • Released Date: 2015-09-02 
    • Deposition Author(s): Appleton, B.A.

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-02
    Type: Initial release
  • Version 1.1: 2015-09-23
    Changes: Database references