RIP2 Kinase Catalytic Domain complex with 2({4[(1,3benzothiazol5yl)amino]6(2methylpropane2sulfonyl)quinazolin7yl}oxy)ethan1ol

Experimental Data Snapshot

  • Resolution: 2.62 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 

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Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


Discovery of a First-in-Class Receptor Interacting Protein 2 (RIP2) Kinase Specific Clinical Candidate, 2-((4-(Benzo[d]thiazol-5-ylamino)-6-(tert-butylsulfonyl)quinazolin-7-yl)oxy)ethyl Dihydrogen Phosphate, for the Treatment of Inflammatory Diseases.

Haile, P.A.Casillas, L.N.Votta, B.J.Wang, G.Z.Charnley, A.K.Dong, X.Bury, M.J.Romano, J.J.Mehlmann, J.F.King, B.W.Erhard, K.F.Hanning, C.R.Lipshutz, D.B.Desai, B.M.Capriotti, C.A.Schaeffer, M.C.Berger, S.B.Mahajan, M.K.Reilly, M.A.Nagilla, R.Rivera, E.J.Sun, H.H.Kenna, J.K.Beal, A.M.Ouellette, M.T.Kelly, M.Stemp, G.Convery, M.A.Vossenkamper, A.MacDonald, T.T.Gough, P.J.Bertin, J.Marquis, R.W.

(2019) J Med Chem 62: 6482-6494

  • DOI: https://doi.org/10.1021/acs.jmedchem.9b00575
  • Primary Citation of Related Structures:  
    6RN8, 6RNA

  • PubMed Abstract: 

    RIP2 kinase has been identified as a key signal transduction partner in the NOD2 pathway contributing to a variety of human pathologies, including immune-mediated inflammatory diseases. Small-molecule inhibitors of RIP2 kinase or its signaling partners on the NOD2 pathway that are suitable for advancement into the clinic have yet to be described. Herein, we report our discovery and profile of the prodrug clinical compound, inhibitor 3 , currently in phase 1 clinical studies. Compound 3 potently binds to RIP2 kinase with good kinase specificity and has excellent activity in blocking many proinflammatory cytokine responses in vivo and in human IBD explant samples. The highly favorable physicochemical and ADMET properties of 3 combined with high potency led to a predicted low oral dose in humans.

  • Organizational Affiliation

    GlaxoSmithKline , Collegeville Road , Collegeville , Pennsylvania 19426 , United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Receptor-interacting serine/threonine-protein kinase 2
A, B
311Homo sapiensMutation(s): 0 
EC: (PDB Primary Data), (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for O43353 (Homo sapiens)
Explore O43353 
Go to UniProtKB:  O43353
PHAROS:  O43353
GTEx:  ENSG00000104312 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO43353
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
KA2 (Subject of Investigation/LOI)
Query on KA2

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
C21 H22 N4 O4 S2
Experimental Data & Validation

Experimental Data

  • Resolution: 2.62 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 132.42α = 90
b = 132.42β = 90
c = 107.17γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-17
    Type: Initial release
  • Version 1.1: 2019-08-07
    Changes: Data collection, Database references
  • Version 1.2: 2024-01-24
    Changes: Data collection, Database references, Refinement description