Crystal structure of RIP1 kinase in complex with GSK3145095

Experimental Data Snapshot

  • Resolution: 2.87 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 

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Identification of a RIP1 Kinase Inhibitor Clinical Candidate (GSK3145095) for the Treatment of Pancreatic Cancer.

Harris, P.A.Marinis, J.M.Lich, J.D.Berger, S.B.Chirala, A.Cox, J.A.Eidam, P.M.Finger, J.N.Gough, P.J.Jeong, J.U.Kang, J.Kasparcova, V.Leister, L.K.Mahajan, M.K.Miller, G.Nagilla, R.Ouellette, M.T.Reilly, M.A.Rendina, A.R.Rivera, E.J.Sun, H.H.Thorpe, J.H.Totoritis, R.D.Wang, W.Wu, D.Zhang, D.Bertin, J.Marquis, R.W.

(2019) ACS Med Chem Lett 10: 857-862

  • DOI: https://doi.org/10.1021/acsmedchemlett.9b00108
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    RIP1 regulates cell death and inflammation and is believed to play an important role in contributing to a variety of human pathologies, including immune-mediated inflammatory diseases and cancer. While small-molecule inhibitors of RIP1 kinase have been advanced to the clinic for inflammatory diseases and CNS indications, RIP1 inhibitors for oncology indications have yet to be described. Herein we report on the discovery and profile of GSK3145095 (compound 6 ). Compound 6 potently binds to RIP1 with exquisite kinase specificity and has excellent activity in blocking RIP1 kinase-dependent cellular responses. Highlighting its potential as a novel cancer therapy, the inhibitor was also able to promote a tumor suppressive T cell phenotype in pancreatic adenocarcinoma organ cultures. Compound 6 is currently in phase 1 clinical studies for pancreatic adenocarcinoma and other selected solid tumors.

  • Organizational Affiliation

    Pattern Recognition Receptor DPU and Medicinal Science & Technology, 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 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
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
K8K (Subject of Investigation/LOI)
Query on K8K

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
C20 H17 F2 N5 O2
Experimental Data & Validation

Experimental Data

  • Resolution: 2.87 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.84α = 90
b = 130.79β = 90
c = 48.83γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-03
    Type: Initial release
  • Version 1.1: 2024-01-24
    Changes: Data collection, Database references, Refinement description