ISDA

Deposition Date 2019-07-30

Release Date 2019-08-28

Last Version Date 2024-03-13

Entry Detail

PDB ID:

6PYS

Keywords:

TRANSFERASE/TRANSFERASE INHIBITOR

Title:

Human PI3Kalpha in complex with Compound 2-10 ((3S)-3-benzyl-3-methyl-5-[5-(2-methylpyrimidin-5-yl)pyrazolo[1,5-a]pyrimidin-3-yl]-1,3-dihydro-2H-indol-2-one)

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Spodoptera frugiperda

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.19 Å

R-Value Free:

0.25

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
Gene (Uniprot):PIK3CA
Chain IDs:A
Chain Length:945
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P42336 Pfam ID:PF00794, PF00792, PF00613, PF00454 EC:2.7.1.137

Ligand Molecules

GOL

P5J

Primary Citation

Design of selective PI3K delta inhibitors using an iterative scaffold-hopping workflow.

Fradera, X, Methot, J.L, Achab, A, Christopher, M, Altman, M.D, Zhou, H, McGowan, M.A, Kattar, S.D, Wilson, K, Garcia, Y, Augustin, M.A, Lesburg, C.A, Shah, S, Goldenblatt, P, Katz, J.D.Show

Bioorg.Med.Chem.Lett. 29 2575 2580 (2019)

PMID: 31416665 DOI: 10.1016/j.bmcl.2019.08.004

Abstact

PI3Kδ mediates key immune cell signaling pathways and is a target of interest for multiple indications in immunology and oncology. Here we report a structure-based scaffold-hopping strategy for the design of chemically diverse PI3Kδ inhibitors. Using this strategy, we identified several scaffolds that can be combined to generate new PI3Kδ inhibitors with high potency and isoform selectivity. In particular, an oxindole-based scaffold was found to impart exquisite selectivity when combined with several hinge binding motifs.

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Primary Citation of related structures