3GXL

ALK-5 kinase complex with GW857175

• PDB DOI: https://doi.org/10.2210/pdb3GXL/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2009-04-02 Released: 2009-04-21 
• Deposition Author(s): Smith, W., Janson, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.263 
• R-Value Work: 0.228 

Starting Model: experimental

Literature

Design of novel quinazoline derivatives and related analogues as potent and selective ALK5 inhibitors

Gellibert, F., Fouchet, M.-H., Nguyen, V.-L., Wang, R., Krysa, G., de Gouville, A.-C., Huet, S., Dodic, N.

(2009) Bioorg Med Chem Lett 19: 2277-2281

• PubMed: 19285388 
• DOI: https://doi.org/10.1016/j.bmcl.2009.02.087
• Primary Citation of Related Structures:  
  3GXL, 3HMM


• PubMed Abstract: 
  

  Starting from quinazoline 3a, we designed potent and selective ALK5 inhibitors over p38MAP kinase from a rational drug design approach based on co-crystal structures in the human ALK5 kinase domain. The quinazoline 3d exhibited also in vivo activity in an acute rat model of DMN-induced liver fibrosis when administered orally at 5mg/kg (bid).

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Organizational Affiliation: 

GlaxoSmithKline, Les Ulis, France. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 35.08 kDa 
• Atom Count: 2,460 
• Modelled Residue Count: 285 
• Deposited Residue Count: 303 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TGF-beta receptor type-1	A	303	Homo sapiens	Mutation(s): 0  EC: 2.7.11.30
UniProt & NIH Common Fund Data Resources
Find proteins for P36897 (Homo sapiens) Explore P36897  Go to UniProtKB:  P36897
PHAROS:  P36897 GTEx:  ENSG00000106799

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
QIG	B [auth A]	N-1H-indazol-5-yl-2-(6-methylpyridin-2-yl)quinazolin-4-amine C21 H16 N6 HNHRWNUXTCATSG-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
QIG	BindingDB:  3GXL	IC50: min: 25, max: 1.00e+4 (nM) from 3 assay(s)
	PDBBind:  3GXL	IC50: 25 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.263 
• R-Value Work: 0.228 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.839	α = 90
b = 74.618	β = 90
c = 89.652	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-04-21 
Deposition Author(s): Smith, W., Janson, C.

Revision History  

• Version 1.0: 2009-04-21
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description
• Version 1.3: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description