6QAS

Crystal structure of ULK1 in complexed with PF-03814735


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Conservation of structure, function and inhibitor binding in UNC-51-like kinase 1 and 2 (ULK1/2).

Chaikuad, A.Koschade, S.E.Stolz, A.Zivkovic, K.Pohl, C.Shaid, S.Ren, H.Lambert, L.J.Cosford, N.D.P.Brandts, C.H.Knapp, S.

(2019) Biochem.J. 476: 875-887

  • DOI: 10.1042/BCJ20190038
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Autophagy is essential for cellular homeostasis and when deregulated this survival mechanism has been associated with disease development. Inhibition of autophagy initiation by inhibiting the kinase ULK1 (Unc-51-like autophagy activating kinase 1) ha ...

    Autophagy is essential for cellular homeostasis and when deregulated this survival mechanism has been associated with disease development. Inhibition of autophagy initiation by inhibiting the kinase ULK1 (Unc-51-like autophagy activating kinase 1) has been proposed as a potential cancer therapy. While inhibitors and crystal structures of ULK1 have been reported, little is known about the other closely related kinase ULK2 (Unc-51-like autophagy activating kinase 2). Here, we present the crystal structure of ULK2 in complex with ATP competitive inhibitors. Surprisingly, the ULK2 structure revealed a dimeric assembly reminiscent of dimeric arrangements of auto-activating kinases suggesting a role for this association in ULK activation. Screening of a kinase focused library of pre-clinical and clinical compounds revealed several potent ULK1/2 inhibitors and good correlation of inhibitor-binding behavior with both ULK kinases. Aurora A was identified as a major off-target of currently used ULK1 inhibitors. Autophagic flux assays demonstrated that this off-target activity by strongly inducing autophagy in different cellular systems conferred an additional layer of complexity in the interpretation of cellular data. The data presented here provide structural models and chemical starting points for the development of ULK1/2 dual inhibitors with improved selectivity for future exploitation of autophagy inhibition.


    Organizational Affiliation

    German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany.,University Cancer Center Frankfurt (UCT), Goethe University, Frankfurt, Germany.,Institute of Pharmaceutical Chemistry, Goethe-University Frankfurt, 60438 Frankfurt, Germany knapp@pharmchem.uni-frankfurt.de chaikuad@pharmchem.uni-frankfurt.de.,Structural Genomics Consortium, BMLS, Goethe-University Frankfurt, 60438 Frankfurt, Germany.,Department of Medicine, Hematology/Oncology, Goethe University, Frankfurt, Germany.,Institute of Biochemistry II, Goethe University School of Medicine, 60590 Frankfurt, Germany.,NCI Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, U.S.A.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase ULK1
A, B
287Homo sapiensMutation(s): 0 
Gene Names: ULK1 (KIAA0722)
EC: 2.7.11.1
Find proteins for O75385 (Homo sapiens)
Go to Gene View: ULK1
Go to UniProtKB:  O75385
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CIT
Query on CIT

Download SDF File 
Download CCD File 
A, B
CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
34W
Query on 34W

Download SDF File 
Download CCD File 
A, B
N-{2-[(1S,4R)-6-{[4-(cyclobutylamino)-5-(trifluoromethyl)pyrimidin-2-yl]amino}-1,2,3,4-tetrahydro-1,4-epiminonaphthalen-9-yl]-2-oxoethyl}acetamide
C23 H25 F3 N6 O2
RYYNGWLOYLRZLK-RBUKOAKNSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A, B
L-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO
A, B
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.170 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 74.241α = 90.00
b = 74.241β = 90.00
c = 222.310γ = 90.00
Software Package:
Software NamePurpose
Aimlessdata scaling
XDSdata reduction
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-02-27
    Type: Initial release
  • Version 1.1: 2019-03-20
    Type: Data collection, Database references