5MTX

Dibenzooxepinone inhibitor 12b in complex with p38 MAPK


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Design, Synthesis, and Biological Evaluation of Novel Type I(1)/2 p38 alpha MAP Kinase Inhibitors with Excellent Selectivity, High Potency, and Prolonged Target Residence Time by Interfering with the R-Spine.

Walter, N.M.Wentsch, H.K.Buhrmann, M.Bauer, S.M.Doring, E.Mayer-Wrangowski, S.Sievers-Engler, A.Willemsen-Seegers, N.Zaman, G.Buijsman, R.Lammerhofer, M.Rauh, D.Laufer, S.A.

(2017) J Med Chem 60: 8027-8054

  • DOI: 10.1021/acs.jmedchem.7b00745
  • Primary Citation of Related Structures:  
    5MTX, 5MTY

  • PubMed Abstract: 
  • We recently reported 1a (skepinone-L) as a type I p38α MAP kinase inhibitor with high potency and excellent selectivity in vitro and in vivo. However, as a type I inhibitor, it is entirely ATP-competitive and shows just a moderate residence time. Thus, the scope was to develop a new class of advanced compounds maintaining the structural binding features of skepinone-L scaffold like inducing a glycine flip at the hinge region and occupying both hydrophobic regions I and II ...

    We recently reported 1a (skepinone-L) as a type I p38α MAP kinase inhibitor with high potency and excellent selectivity in vitro and in vivo. However, as a type I inhibitor, it is entirely ATP-competitive and shows just a moderate residence time. Thus, the scope was to develop a new class of advanced compounds maintaining the structural binding features of skepinone-L scaffold like inducing a glycine flip at the hinge region and occupying both hydrophobic regions I and II. Extending this scaffold with suitable residues resulted in an interference with the kinase's R-Spine. By synthesizing 69 compounds, we could significantly prolong the target residence time with one example to 3663 s, along with an excellent selectivity score of 0.006 and an outstanding potency of 1.0 nM. This new binding mode was validated by cocrystallization, showing all binding interactions typifying type I 1 / 2 binding. Moreover, microsomal studies showed convenient metabolic stability of the most potent, herein reported representatives.


    Organizational Affiliation

    Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, Eberhard-Karls-Universitaet Tuebingen , Auf der Morgenstelle 8, 72076 Tuebingen, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 14A360Homo sapiensMutation(s): 0 
Gene Names: MAPK14CSBPCSBP1CSBP2CSPB1MXI2SAPK2A
EC: 2.7.11.24
UniProt & NIH Common Fund Data Resources
Find proteins for Q16539 (Homo sapiens)
Explore Q16539 
Go to UniProtKB:  Q16539
PHAROS:  Q16539
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FJI (Subject of Investigation/LOI)
Query on FJI

Download Ideal Coordinates CCD File 
B [auth A]3-[(3-benzamido-4-fluoranyl-phenyl)amino]-~{N}-(2-morpholin-4-ylethyl)-11-oxidanylidene-6~{H}-benzo[c][1]benzoxepine-9-carboxamide
C34 H31 F N4 O5
KZWLZLUTYGMNBM-UHFFFAOYSA-N
 Ligand Interaction
BOG (Subject of Investigation/LOI)
Query on BOG

Download Ideal Coordinates CCD File 
C [auth A], D [auth A]octyl beta-D-glucopyranoside
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
FJI BindingDB:  5MTX Kd: min: 3.1, max: 18 (nM) from 2 assay(s)
IC50: min: 1, max: 464 (nM) from 2 assay(s)
Binding MOAD:  5MTX Kd: 17.7 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.65α = 90
b = 70.21β = 90
c = 74.57γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-09-06
    Type: Initial release
  • Version 1.1: 2017-09-20
    Changes: Database references
  • Version 1.2: 2017-10-25
    Changes: Database references
  • Version 1.3: 2019-08-14
    Changes: Data collection
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary