3APC image
Deposition Date 2010-10-14
Release Date 2011-04-13
Last Version Date 2023-11-01
Entry Detail
PDB ID:
3APC
Keywords:
Transferase/Transferase inhibitor
Title:
Crystal structure of human PI3K-gamma in complex with CH5132799
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Spodoptera frugiperda
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.54 Å
R-Value Free:
0.28
R-Value Work:
0.23
R-Value Observed:
0.23
Space Group:
C 1 2 1
3APC validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma isoform
Gene (Uniprot):PIK3CG
Chain IDs:A
Chain Length:966
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P48736 Pfam ID:PF00794, PF00792, PF00613, PF00454 EC:2.7.1.137
Ligand Molecules
MMD
SO4
Primary Citation
Discovery and biological activity of a novel class I PI3K inhibitor, CH5132799
Bioorg.Med.Chem.Lett. 21 1767 1772 (2011)
PMID: 21316229 DOI: 10.1016/j.bmcl.2011.01.065

Abstact

Phosphatidylinositol 3-kinase (PI3K) is a lipid kinase and a promising therapeutic target for cancer. Using structure-based drug design (SBDD), we have identified novel PI3K inhibitors with a dihydropyrrolopyrimidine skeleton. Metabolic stability of the first lead series was drastically improved by replacing phenol with aminopyrimidine moiety. CH5132799, a novel class I PI3K inhibitor, exhibited a strong inhibitory activity especially against PI3Kα (IC(50)=0.014 μM). In human tumor cell lines with PI3K pathway activation, CH5132799 showed potent antiproliferative activity. CH5132799 is orally available and showed significant antitumor activity in PI3K pathway-activated human cancer xenograft models in mice.

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Primary Citation of related structures
3APD
3APF