3PA5

X-ray crystal structure of compound 1 bound to human CHK1 kinase domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.185 

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This is version 1.1 of the entry. See complete history. 


Literature

Design, synthesis and SAR of thienopyridines as potent CHK1 inhibitors.

Zhao, L., Zhang, Y., Dai, C., Guzi, T., Wiswell, D., Seghezzi, W., Parry, D., Fischmann, T., Siddiqui, M.A.

(2010) Bioorg Med Chem Lett 20: 7216-7221

  • DOI: https://doi.org/10.1016/j.bmcl.2010.10.105
  • Primary Citation of Related Structures:  
    3PA3, 3PA4, 3PA5

  • PubMed Abstract: 

    • A novel series of CHK1 inhibitors based on thienopyridine template has been designed and synthesized. These inhibitors maintain critical hydrogen bonding with the hinge and conserved water in the ATP binding site. Several compounds show single digit nanomolar CHK1 activities ...

    A novel series of CHK1 inhibitors based on thienopyridine template has been designed and synthesized. These inhibitors maintain critical hydrogen bonding with the hinge and conserved water in the ATP binding site. Several compounds show single digit nanomolar CHK1 activities. Compound 70 shows excellent enzymatic activity of 1 nM.

    Organizational Affiliation: 

    Department of Chemistry, Merck Research Laboratories, Cambridge, MA 02141, USA. lianyun.zhao@merck.com



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine/threonine-protein kinase Chk1273Homo sapiensMutation(s): 0 
Gene Names: CHEK1, CHK1
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O14757 (Homo sapiens)
Explore O14757 
Go to UniProtKB:  O14757
PHAROS:  O14757
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO14757
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
C73
Query on C73
Download Ideal Coordinates CCD File 
B [auth A]2-(carbamoylamino)-5-(4-chlorophenyl)-N-[(3S)-piperidin-3-yl]thiophene-3-carboxamide
C17 H19 Cl N4 O2 S
MZBVMTJFZZINAF-LBPRGKRZSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]		GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
C73 Binding MOAD:  3PA5 IC50: 2 (nM) from 1 assay(s)
BindingDB:  3PA5 IC50: 10 (nM) from 1 assay(s)
PDBBind:  3PA5 IC50: 2 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.185 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.84α = 90
b = 65.85β = 94.68
c = 58.25γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
BUSTERrefinement

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-12-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance