5EAK

Optimization of Microtubule Affinity Regulating Kinase (MARK) Inhibitors with Improved Physical Properties


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Optimization of microtubule affinity regulating kinase (MARK) inhibitors with improved physical properties.

Sloman, D.L.Noucti, N.Altman, M.D.Chen, D.Mislak, A.C.Szewczak, A.Hayashi, M.Warren, L.Dellovade, T.Wu, Z.Marcus, J.Walker, D.Su, H.P.Edavettal, S.C.Munshi, S.Hutton, M.Nuthall, H.Stanton, M.G.

(2016) Bioorg.Med.Chem.Lett. 26: 4362-4366

  • DOI: 10.1016/j.bmcl.2016.02.003

  • PubMed Abstract: 
  • Inhibition of microtubule affinity regulating kinase (MARK) represents a potentially attractive means of arresting neurofibrillary tangle pathology in Alzheimer's disease. This manuscript outlines efforts to optimize a pyrazolopyrimidine series of MA ...

    Inhibition of microtubule affinity regulating kinase (MARK) represents a potentially attractive means of arresting neurofibrillary tangle pathology in Alzheimer's disease. This manuscript outlines efforts to optimize a pyrazolopyrimidine series of MARK inhibitors by focusing on improvements in potency, physical properties and attributes amenable to CNS penetration. A unique cylcyclohexyldiamine scaffold was identified that led to remarkable improvements in potency, opening up opportunities to reduce MW, Pgp efflux and improve pharmacokinetic properties while also conferring improved solubility.


    Organizational Affiliation

    Discovery Chemistry, Merck and Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02215, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase MARK2
A, B
328Homo sapiensMutation(s): 0 
Gene Names: MARK2 (EMK1)
EC: 2.7.11.1, 2.7.11.26
Find proteins for Q7KZI7 (Homo sapiens)
Go to Gene View: MARK2
Go to UniProtKB:  Q7KZI7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
24R
Query on 24R

Download SDF File 
Download CCD File 
A, B
N-[(1S,2R)-2-aminocyclohexyl]-4-[6-(1-methyl-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyrimidin-3-yl]thiophene-2-carboxamide
C21 H23 N7 O S
LYADGAGFYYXXIO-MSOLQXFVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.195 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 118.739α = 90.00
b = 118.739β = 90.00
c = 106.592γ = 120.00
Software Package:
Software NamePurpose
REFMACphasing
PHENIXrefinement
DENZOdata reduction
SCALEPACKdata scaling
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-10-16 
  • Released Date: 2016-02-17 
  • Deposition Author(s): Su, H.P.

Revision History 

  • Version 1.0: 2016-02-17
    Type: Initial release
  • Version 1.1: 2016-08-24
    Type: Database references
  • Version 1.2: 2017-11-22
    Type: Database references, Derived calculations, Refinement description