3OS3

Mitogen-activated protein kinase kinase 1 (MEK1) in complex with CH4858061 and MgATP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.356 
  • R-Value Work: 0.268 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Design and synthesis of novel allosteric MEK inhibitor CH4987655 as an orally available anticancer agent.

Isshiki, Y.Kohchi, Y.Iikura, H.Matsubara, Y.Asoh, K.Murata, T.Kohchi, M.Mizuguchi, E.Tsujii, S.Hattori, K.Miura, T.Yoshimura, Y.Aida, S.Miwa, M.Saitoh, R.Murao, N.Okabe, H.Belunis, C.Janson, C.Lukacs, C.Schuck, V.Shimma, N.

(2011) Bioorg Med Chem Lett 21: 1795-1801

  • DOI: 10.1016/j.bmcl.2011.01.062
  • Primary Citation of Related Structures:  
    3ORN, 3OS3

  • PubMed Abstract: 
  • The MAP kinase pathway is one of the most important pathways involved in cell proliferation and differentiation, and its components are promising targets for antitumor drugs. Design and synthesis of a novel MEK inhibitor, based on the 3D-structural information of the target enzyme, and then multidimensional optimization including metabolic stability, physicochemical properties and safety profiles were effectively performed and led to the identification of a clinical candidate for an orally available potent MEK inhibitor, CH4987655, possessing a unique 3-oxo-oxazinane ring structure at the 5-position of the benzamide core structure ...

    The MAP kinase pathway is one of the most important pathways involved in cell proliferation and differentiation, and its components are promising targets for antitumor drugs. Design and synthesis of a novel MEK inhibitor, based on the 3D-structural information of the target enzyme, and then multidimensional optimization including metabolic stability, physicochemical properties and safety profiles were effectively performed and led to the identification of a clinical candidate for an orally available potent MEK inhibitor, CH4987655, possessing a unique 3-oxo-oxazinane ring structure at the 5-position of the benzamide core structure. CH4987655 exhibits slow dissociation from the MEK enzyme, remarkable in vivo antitumor efficacy both in mono- and combination therapy, desirable metabolic stability, and insignificant MEK inhibition in mouse brain, implying few CNS-related side effects in human. An excellent PK profile and clear target inhibition in PBMC were demonstrated in a healthy volunteer clinical study.


    Organizational Affiliation

    Kamakura Research Laboratories, Chugai Pharmaceutical Co., Ltd, Kamakura, Kanagawa, Japan. isshikiysa@chugai-pharm.co.jp



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Dual specificity mitogen-activated protein kinase kinase 1A307Homo sapiensMutation(s): 0 
Gene Names: MAP2K1
EC: 2.7.12.2
Find proteins for Q02750 (Homo sapiens)
Explore Q02750 
Go to UniProtKB:  Q02750
NIH Common Fund Data Resources
PHAROS  Q02750
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download CCD File 
A
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
3OS
Query on 3OS

Download CCD File 
A
2-[(4-ethynyl-2-fluorophenyl)amino]-3,4-difluoro-N-(2-hydroxyethoxy)-5-{[(2-hydroxyethoxy)imino]methyl}benzamide
C20 H18 F3 N3 O5
NLXYHBBGDADWQY-BHGWPJFGSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3OSIC50 :  235   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.356 
  • R-Value Work: 0.268 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.998α = 90
b = 72.998β = 90
c = 131.505γ = 120
Software Package:
Software NamePurpose
CNXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
CNXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-27
    Type: Initial release
  • Version 1.1: 2017-08-23
    Changes: Refinement description, Source and taxonomy