4I5C

The Jak1 kinase domain in complex with inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Novel triazolo-pyrrolopyridines as inhibitors of Janus kinase 1.

Hurley, C.A.Blair, W.S.Bull, R.J.Chang, C.Crackett, P.H.Deshmukh, G.Dyke, H.J.Fong, R.Ghilardi, N.Gibbons, P.Hewitt, P.R.Johnson, A.Johnson, T.Kenny, J.R.Kohli, P.B.Kulagowski, J.J.Liimatta, M.Lupardus, P.J.Maxey, R.J.Mendonca, R.Narukulla, R.Pulk, R.Ubhayakar, S.van Abbema, A.Ward, S.I.Waszkowycz, B.Zak, M.

(2013) Bioorg Med Chem Lett 23: 3592-3598

  • DOI: https://doi.org/10.1016/j.bmcl.2013.04.018
  • Primary Citation of Related Structures:  
    4I5C

  • PubMed Abstract: 
  • The identification of a novel fused triazolo-pyrrolopyridine scaffold, optimized derivatives of which display nanomolar inhibition of Janus kinase 1, is described. Prototypical example 3 demonstrated lower cell potency shift, better permeability in cells and higher oral exposure in rat than the corresponding, previously reported, imidazo-pyrrolopyridine analogue 2 ...

    The identification of a novel fused triazolo-pyrrolopyridine scaffold, optimized derivatives of which display nanomolar inhibition of Janus kinase 1, is described. Prototypical example 3 demonstrated lower cell potency shift, better permeability in cells and higher oral exposure in rat than the corresponding, previously reported, imidazo-pyrrolopyridine analogue 2. Examples 6, 7 and 18 were subsequently identified from an optimization campaign and demonstrated modest selectivity over JAK2, moderate to good oral bioavailability in rat with overall pharmacokinetic profiles comparable to that reported for an approved pan-JAK inhibitor (tofacitinib).


    Organizational Affiliation

    Department of Medicinal Chemistry, Argenta, 8/9 Spire Green Centre, Harlow, Essex CM19 5TR, United Kingdom. Chris.Hurley@glpg.com



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase JAK1
A, B
302Homo sapiensMutation(s): 0 
Gene Names: JAK1JAK1AJAK1B
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for P23458 (Homo sapiens)
Explore P23458 
Go to UniProtKB:  P23458
PHAROS:  P23458
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23458
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
C5I
Query on C5I

Download Ideal Coordinates CCD File 
C [auth A],
H [auth B]
3-oxo-3-[(3R)-3-(pyrrolo[2,3-b][1,2,3]triazolo[4,5-d]pyridin-1(6H)-yl)piperidin-1-yl]propanenitrile
C15 H15 N7 O
COGIAVJREKAVDL-SNVBAGLBSA-N
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
D [auth B],
E [auth B],
F [auth B],
G [auth B]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
A, B
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
Binding Affinity Annotations 
IDSourceBinding Affinity
C5I PDBBind:  4I5C Ki: 1.5 (nM) from 1 assay(s)
BindingDB:  4I5C Ki: 1.5 (nM) from 1 assay(s)
EC50: 114 (nM) from 1 assay(s)
Binding MOAD:  4I5C Ki: 1.5 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.193 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.7α = 90
b = 173.969β = 94.11
c = 44.675γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
BUSTERrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-22
    Type: Initial release
  • Version 1.1: 2013-06-12
    Changes: Database references