5OP4

Structure of CHK1 10-pt. mutant complex with aminopyrimidine LRRK2 inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Design of Leucine-Rich Repeat Kinase 2 (LRRK2) Inhibitors Using a Crystallographic Surrogate Derived from Checkpoint Kinase 1 (CHK1).

Williamson, D.S.Smith, G.P.Acheson-Dossang, P.Bedford, S.T.Chell, V.Chen, I.J.Daechsel, J.C.A.Daniels, Z.David, L.Dokurno, P.Hentzer, M.Herzig, M.C.Hubbard, R.E.Moore, J.D.Murray, J.B.Newland, S.Ray, S.C.Shaw, T.Surgenor, A.E.Terry, L.Thirstrup, K.Wang, Y.Christensen, K.V.

(2017) J Med Chem 60: 8945-8962

  • DOI: 10.1021/acs.jmedchem.7b01186
  • Primary Citation of Related Structures:  
    5OOP, 5OOR, 5OOT, 5OP2, 5OP4, 5OP5, 5OP7, 5OPB, 5OPR, 5OPS, 5OPU, 5OPV, 5OQ5, 5OQ6, 5OQ7, 5OQ8

  • PubMed Abstract: 
  • Mutations in leucine-rich repeat kinase 2 (LRRK2), such as G2019S, are associated with an increased risk of developing Parkinson's disease. Surrogates for the LRRK2 kinase domain based on checkpoint kinase 1 (CHK1) mutants were designed, expressed in insect cells infected with baculovirus, purified, and crystallized ...

    Mutations in leucine-rich repeat kinase 2 (LRRK2), such as G2019S, are associated with an increased risk of developing Parkinson's disease. Surrogates for the LRRK2 kinase domain based on checkpoint kinase 1 (CHK1) mutants were designed, expressed in insect cells infected with baculovirus, purified, and crystallized. X-ray structures of the surrogates complexed with known LRRK2 inhibitors rationalized compound potency and selectivity. The CHK1 10-point mutant was preferred, following assessment of surrogate binding affinity with LRRK2 inhibitors. Fragment hit-derived arylpyrrolo[2,3-b]pyridine LRRK2 inhibitors underwent structure-guided optimization using this crystallographic surrogate. LRRK2-pSer935 HEK293 IC 50 data for 22 were consistent with binding to Ala2016 in LRRK2 (equivalent to Ala147 in CHK1 10-point mutant structure). Compound 22 was shown to be potent, moderately selective, orally available, and brain-penetrant in wild-type mice, and confirmation of target engagement was demonstrated, with LRRK2-pSer935 IC 50 values for 22 in mouse brain and kidney being 1.3 and 5 nM, respectively.


    Organizational Affiliation

    H. Lundbeck A/S , Ottiliavej 9, 2500 Valby, Denmark.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase Chk1A297Homo sapiensMutation(s): 10 
Gene Names: CHEK1CHK1
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O14757 (Homo sapiens)
Explore O14757 
Go to UniProtKB:  O14757
PHAROS:  O14757
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
A0T (Subject of Investigation/LOI)
Query on A0T

Download Ideal Coordinates CCD File 
B [auth A][4-[[4-(ethylamino)-5-(trifluoromethyl)pyrimidin-2-yl]amino]-2-fluoranyl-5-methoxy-phenyl]-morpholin-4-yl-methanone
C19 H21 F4 N5 O3
XCFLWTZSJYBCPF-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
A0T Binding MOAD:  5OP4 Ki: 194 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.25α = 90
b = 66.21β = 102.23
c = 54.61γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-25
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Database references