5USQ

ALK-5 kinase inhibitor complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Design, synthesis and optimization of 7-substituted-pyrazolo[4,3-b]pyridine ALK5 (activin receptor-like kinase 5) inhibitors.

Sabat, M.Wang, H.Scorah, N.Lawson, J.D.Atienza, J.Kamran, R.Hixon, M.S.Dougan, D.R.

(2017) Bioorg. Med. Chem. Lett. 27: 1955-1961

  • DOI: 10.1016/j.bmcl.2017.03.026

  • PubMed Abstract: 
  • A series of potent ALK5 inhibitors were designed using a SBDD approach and subsequently optimized to improve drug likeness. Starting with a 4-substituted quinoline screening hit, SAR was conducted using a ALK5 binding model to understand the binding ...

    A series of potent ALK5 inhibitors were designed using a SBDD approach and subsequently optimized to improve drug likeness. Starting with a 4-substituted quinoline screening hit, SAR was conducted using a ALK5 binding model to understand the binding site and optimize activity. The resulting inhibitors displayed excellent potency but were limited by high in vitro clearance in rat and human microsomes. Using a scaffold morphing strategy, these analogs were transformed into a related pyrazolo[4,3-b]pyridine series with improved ADME properties.


    Organizational Affiliation

    Takeda California, 10410 Science Center Drive, San Diego, CA 92121, United States. Electronic address: mark.sabat@takedasd.com.,Takeda California, 10410 Science Center Drive, San Diego, CA 92121, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TGF-beta receptor type-1
A
299Homo sapiensMutation(s): 0 
Gene Names: TGFBR1 (ALK5, SKR4)
EC: 2.7.11.30
Find proteins for P36897 (Homo sapiens)
Go to Gene View: TGFBR1
Go to UniProtKB:  P36897
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8LY
Query on 8LY

Download SDF File 
Download CCD File 
A
N-[2-(5-chloro-2-fluorophenyl)pyridin-4-yl]-2-[(piperidin-4-yl)methyl]-2H-pyrazolo[4,3-b]pyridin-7-amine
C23 H22 Cl F N6
QZJHLQYMHQMSIQ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.179 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 41.589α = 90.00
b = 78.330β = 90.00
c = 90.712γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
SCALEPACKdata scaling
HKL-2000data collection
DENZOdata reduction
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-04-12
    Type: Initial release
  • Version 1.1: 2017-04-26
    Type: Database references
  • Version 1.2: 2017-11-22
    Type: Refinement description