4JPG

2-((1H-benzo[d]imidazol-1-yl)methyl)-4H-pyrido[1,2-a]pyrimidin-4-ones as Novel PKM2 Activators


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.180 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Discovery of 2-((1H-benzo[d]imidazol-1-yl)methyl)-4H-pyrido[1,2-a]pyrimidin-4-ones as novel PKM2 activators.

Guo, C.Linton, A.Jalaie, M.Kephart, S.Ornelas, M.Pairish, M.Greasley, S.Richardson, P.Maegley, K.Hickey, M.Li, J.Wu, X.Ji, X.Xie, Z.

(2013) Bioorg Med Chem Lett 23: 3358-3363

  • DOI: https://doi.org/10.1016/j.bmcl.2013.03.090
  • Primary Citation of Related Structures:  
    4JPG

  • PubMed Abstract: 

    The M2 isoform of pyruvate kinase is an emerging target for antitumor therapy. In this letter, we describe the discovery of 2-((1H-benzo[d]imidazol-1-yl)methyl)-4H-pyrido[1,2-a]pyrimidin-4-ones as potent and selective PKM2 activators which were found to have a novel binding mode. The original lead identified from high throughput screening was optimized into an efficient series via computer-aided structure-based drug design. Both a representative compound from this series and an activator described in the literature were used as molecular tools to probe the biological effects of PKM2 activation on cancer cells. Our results suggested that PKM2 activation alone is not sufficient to alter cancer cell metabolism.


  • Organizational Affiliation

    Oncology Medicinal Chemistry, Pfizer Worldwide Research & Development, San Diego, CA 92121, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Pyruvate kinase isozymes M1/M2
A, B, C, D
556Homo sapiensMutation(s): 0 
Gene Names: PKMOIP3PK2PK3PKM2
EC: 2.7.1.40
UniProt & NIH Common Fund Data Resources
Find proteins for P14618 (Homo sapiens)
Explore P14618 
Go to UniProtKB:  P14618
PHAROS:  P14618
GTEx:  ENSG00000067225 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14618
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.180 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.971α = 90
b = 153.613β = 103.45
c = 93.479γ = 90
Software Package:
Software NamePurpose
MxDCdata collection
ARPmodel building
BUSTERrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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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: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Data collection, Database references, Derived calculations, Structure summary
  • Version 1.2: 2024-02-28
    Changes: Advisory, Data collection, Database references, Structure summary