Rsk2 N-terminal kinase in complex with 2-amino-7-substituted benzoxazole compound 27

Experimental Data Snapshot

  • Resolution: 1.74 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.167 

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2-Amino-7-substituted benzoxazole analogs as potent RSK2 inhibitors.

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

(2014) Bioorg Med Chem Lett 24: 1592-1596

  • DOI: https://doi.org/10.1016/j.bmcl.2014.01.058
  • Primary Citation of Related Structures:  
    4NW5, 4NW6

  • PubMed Abstract: 

    2-Amino-7-substituted benzoxazole analogs were identified by HTS as inhibitors of RSK2. Molecular modeling and medicinal chemistry techniques were employed to explore the SAR for this series with a focus of improving in vitro and target modulation potency and physicochemical properties.

  • Organizational Affiliation

    Global Discovery Chemistry/Oncology & Exploratory Chemistry, Novartis Institutes for Biomedical Research, 4560 Horton Street, Emeryville, CA 94608, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ribosomal protein S6 kinase alpha-3323Homo sapiensMutation(s): 0 
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
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 2NS

Download Ideal Coordinates CCD File 
B [auth A]7-(1H-benzimidazol-7-yl)-N-(3,4,5-trimethoxyphenyl)-1,3-benzoxazol-2-amine
C23 H20 N4 O4
Experimental Data & Validation

Experimental Data

  • Resolution: 1.74 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.87α = 90
b = 60.53β = 90
c = 112.24γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2014-10-08
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations