4XH6 image
Deposition Date 2015-01-05
Release Date 2015-08-26
Last Version Date 2023-11-08
Entry Detail
PDB ID:
4XH6
Keywords:
Transferase/Transferase Inhibitor
Title:
Crystal structure of proto-oncogene kinase Pim1 bound to hispidulin
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.04 Å
R-Value Free:
0.22
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 65
4XH6 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Serine/threonine-protein kinase pim-1
Gene (Uniprot):PIM1
Chain IDs:A
Chain Length:294
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P11309 Pfam ID:PF00069 EC:2.7.11.1
Ligand Molecules
HUL
Primary Citation
Total Synthesis of Hispidulin and the Structural Basis for Its Inhibition of Proto-oncogene Kinase Pim-1
J.Nat.Prod. 78 1969 1976 (2015)
PMID: 26275107 DOI: 10.1021/acs.jnatprod.5b00324

Abstact

A new method is applied to synthesize hispidulin, a natural flavone with a broad spectrum of biological activities. Hispidulin exhibits inhibitory activity against the oncogenic protein kinase Pim-1. Crystallographic analysis of Pim-1 bound to hispidulin reveals a binding mode distinct from that of quercetin, suggesting that the binding potency of flavonoids is determined by their hydrogen-bonding interactions with the hinge region of the kinase. Overall, this work may facilitate construction of a library of hispidulin-derived compounds for investigating the structure-activity relationship of flavone-based Pim-1 inhibitors.

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Primary Citation of related structures
4XH6