3FAA

Crystal structure of TGFbRI complexed with a 2-aminoimidazole inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

2-Aminoimidazoles inhibitors of TGF-beta receptor 1.

Bonafoux, D.Chuaqui, C.Boriack-Sjodin, P.A.Fitch, C.Hankins, G.Josiah, S.Black, C.Hetu, G.Ling, L.Lee, W.C.

(2009) Bioorg.Med.Chem.Lett. 19: 912-916

  • DOI: 10.1016/j.bmcl.2008.11.119

  • PubMed Abstract: 
  • The 4-(5-fluoro-6-methyl-pyridin-2-yl)-5-quinoxalin-6-yl-1H-imidazol-2-ylamine 3 is a potent and selective inhibitor of TGF-betaR1. Substitution of the amino group of 3 typically led to a slight decrease in the affinity for the receptor and in TGF-be ...

    The 4-(5-fluoro-6-methyl-pyridin-2-yl)-5-quinoxalin-6-yl-1H-imidazol-2-ylamine 3 is a potent and selective inhibitor of TGF-betaR1. Substitution of the amino group of 3 typically led to a slight decrease in the affinity for the receptor and in TGF-beta-inducted PAI-luciferase reporter activity. However, 2-acetamidoimidazoles were identified as attractive candidates for further optimization as a result of their significant activity combined to their superior pharmacokinetic profile.


    Organizational Affiliation

    Abbot Laboratories, 381 Plantation Street, Worcester, MA 01605-2323, USA. dominique.bonafoux@abbott.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TGF-beta receptor type-1
A, B, C, D, E
342Homo 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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B, C, D, E
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
55F
Query on 55F

Download SDF File 
Download CCD File 
A, B, C, D, E
N-[4-(5-fluoro-6-methylpyridin-2-yl)-5-quinoxalin-6-yl-1H-imidazol-2-yl]acetamide
C19 H15 F N6 O
TYPILNNEZPSNTI-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
55FEC50: 180 nM (100) BINDINGDB
55FKi: 7.1 nM (100) BINDINGDB
55FKi: 7.1 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.228 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 174.861α = 90.00
b = 248.852β = 90.00
c = 138.628γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
CBASSdata collection
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-01-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description