4DK5 image
Entry Detail
PDB ID:
4DK5
Title:
Crystal structure of human PI3K-gamma in complex with a pyridyl-triazine inhibitor
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2012-02-03
Release Date:
2012-05-16
Method Details:
Experimental Method:
Resolution:
2.95 Å
R-Value Free:
0.28
R-Value Work:
0.21
R-Value Observed:
0.22
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma isoform
Chain IDs:A
Chain Length:959
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation

Abstact

A highly selective series of inhibitors of the class I phosphatidylinositol 3-kinases (PI3Ks) has been designed and synthesized. Starting from the dual PI3K/mTOR inhibitor 5, a structure-based approach was used to improve potency and selectivity, resulting in the identification of 54 as a potent inhibitor of the class I PI3Ks with excellent selectivity over mTOR, related phosphatidylinositol kinases, and a broad panel of protein kinases. Compound 54 demonstrated a robust PD-PK relationship inhibiting the PI3K/Akt pathway in vivo in a mouse model, and it potently inhibited tumor growth in a U-87 MG xenograft model with an activated PI3K/Akt pathway.

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Primary Citation of related structures