5KZI

Crystal structure of human Pim-1 kinase in complex with an imidazopyridazine inhibitor.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of imidazopyridazines as potent Pim-1/2 kinase inhibitors.

Wurz, R.P.Sastri, C.D'Amico, D.C.Herberich, B.Jackson, C.L.Pettus, L.H.Tasker, A.S.Wu, B.Guerrero, N.Lipford, J.R.Winston, J.T.Yang, Y.Wang, P.Nguyen, Y.Andrews, K.L.Huang, X.Lee, M.R.Mohr, C.Zhang, J.D.Reid, D.L.Xu, Y.Zhou, Y.Wang, H.L.

(2016) Bioorg. Med. Chem. Lett. 26: 5580-5590

  • DOI: 10.1016/j.bmcl.2016.09.067

  • PubMed Abstract: 
  • High levels of Pim expression have been implicated in several hematopoietic and solid tumor cancers, suggesting that inhibition of Pim signaling could provide patients with therapeutic benefit. Herein, we describe our progress towards this goal using ...

    High levels of Pim expression have been implicated in several hematopoietic and solid tumor cancers, suggesting that inhibition of Pim signaling could provide patients with therapeutic benefit. Herein, we describe our progress towards this goal using a screening hit (rac-1) as a starting point. Modification of the indazole ring resulted in the discovery of a series of imidazopyridazine-based Pim inhibitors exemplified by compound 22m, which was found to be a subnanomolar inhibitor of the Pim-1 and Pim-2 isoforms (IC50 values of 0.024nM and 0.095nM, respectively) and to potently inhibit the phosphorylation of BAD in a cell line that expresses high levels of all Pim isoforms, KMS-12-BM (IC50=28nM). Profiling of Pim-1 and Pim-2 expression levels in a panel of multiple myeloma cell lines and correlation of these data with the potency of compound 22m in a proliferation assay suggests that Pim-2 inhibition would be advantageous for this indication.


    Organizational Affiliation

    Department of Therapeutic Discovery, Amgen Inc., One Amgen Center Drive, Thousand Oaks, CA 91320-1799, USA. Electronic address: rwurz@amgen.com.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase pim-1
A
286Homo sapiensMutation(s): 0 
Gene Names: PIM1
EC: 2.7.11.1
Find proteins for P11309 (Homo sapiens)
Go to Gene View: PIM1
Go to UniProtKB:  P11309
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6YN
Query on 6YN

Download SDF File 
Download CCD File 
A
~{N}-[4-[(3~{S})-3-azanylpiperidin-1-yl]pyridin-3-yl]-2-[2,6-bis(fluoranyl)phenyl]imidazo[1,5-b]pyridazin-7-amine
C22 H21 F2 N7
MLPJIYXHHVPOPK-AWEZNQCLSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.178 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 95.998α = 90.00
b = 95.998β = 90.00
c = 81.251γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
REFMACrefinement
MOLREPphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-07-25 
  • Released Date: 2016-11-09 
  • Deposition Author(s): Mohr, C.

Revision History 

  • Version 1.0: 2016-11-09
    Type: Initial release
  • Version 1.1: 2016-12-28
    Type: Database references