Crystal structure of RIP1 kinase in complex with a pyrrolidine

Experimental Data Snapshot

  • Resolution: 2.79 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 

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This is version 1.2 of the entry. See complete history


Discovery and Lead-Optimization of 4,5-Dihydropyrazoles as Mono-Kinase Selective, Orally Bioavailable and Efficacious Inhibitors of Receptor Interacting Protein 1 (RIP1) Kinase.

Harris, P.A.Faucher, N.George, N.Eidam, P.M.King, B.W.White, G.V.Anderson, N.A.Bandyopadhyay, D.Beal, A.M.Beneton, V.Berger, S.B.Campobasso, N.Campos, S.Capriotti, C.A.Cox, J.A.Daugan, A.Donche, F.Fouchet, M.H.Finger, J.N.Geddes, B.Gough, P.J.Grondin, P.Hoffman, B.L.Hoffman, S.J.Hutchinson, S.E.Jeong, J.U.Jigorel, E.Lamoureux, P.Leister, L.K.Lich, J.D.Mahajan, M.K.Meslamani, J.Mosley, J.E.Nagilla, R.Nassau, P.M.Ng, S.L.Ouellette, M.T.Pasikanti, K.K.Potvain, F.Reilly, M.A.Rivera, E.J.Sautet, S.Schaeffer, M.C.Sehon, C.A.Sun, H.Thorpe, J.H.Totoritis, R.D.Ward, P.Wellaway, N.Wisnoski, D.D.Woolven, J.M.Bertin, J.Marquis, R.W.

(2019) J Med Chem 62: 5096-5110

  • DOI: https://doi.org/10.1021/acs.jmedchem.9b00318
  • Primary Citation of Related Structures:  
    6OCQ, 6R5F

  • PubMed Abstract: 

    RIP1 kinase regulates necroptosis and inflammation and may play an important role in contributing to a variety of human pathologies, including inflammatory and neurological diseases. Currently, RIP1 kinase inhibitors have advanced into early clinical trials for evaluation in inflammatory diseases such as psoriasis, rheumatoid arthritis, and ulcerative colitis and neurological diseases such as amyotrophic lateral sclerosis and Alzheimer's disease. In this paper, we report on the design of potent and highly selective dihydropyrazole (DHP) RIP1 kinase inhibitors starting from a high-throughput screen and the lead-optimization of this series from a lead with minimal rat oral exposure to the identification of dihydropyrazole 77 with good pharmacokinetic profiles in multiple species. Additionally, we identified a potent murine RIP1 kinase inhibitor 76 as a valuable in vivo tool molecule suitable for evaluating the role of RIP1 kinase in chronic models of disease. DHP 76 showed efficacy in mouse models of both multiple sclerosis and human retinitis pigmentosa.

  • Organizational Affiliation

    Flexible Discovery Unit , GlaxoSmithKline , 25-27 avenue du Québec , 91951 Les Ulis Cedex , France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Receptor-interacting serine/threonine-protein kinase 1
A, B
303Homo sapiensMutation(s): 4 
Gene Names: RIPK1RIPRIP1
UniProt & NIH Common Fund Data Resources
Find proteins for Q13546 (Homo sapiens)
Explore Q13546 
Go to UniProtKB:  Q13546
PHAROS:  Q13546
GTEx:  ENSG00000137275 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13546
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.79 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.297α = 90
b = 95.117β = 90
c = 127.24γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-05-08
    Type: Initial release
  • Version 1.1: 2019-06-05
    Changes: Data collection, Database references
  • Version 1.2: 2024-03-13
    Changes: Data collection, Database references