ISDA: 4FHJ

Deposition Date 2012-06-06

Release Date 2012-07-18

Last Version Date 2023-09-13

Entry Detail

PDB ID:

4FHJ

Keywords:

Transferase/Inhibitor

Title:

Crystal Structure of PI3K-gamma in Complex with Imidazopyridine 2

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Spodoptera frugiperda

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.60 Å

R-Value Free:

0.25

R-Value Work:

0.21

R-Value Observed:

0.21

Space Group:

C 1 2 1

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Macromolecular Entities

Structures with similar UniProt ID

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:960
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P48736 Pfam ID:PF00794, PF00792, PF00613, PF00454 EC:2.7.1.137

Ligand Molecules

0TZ

SO4

Primary Citation

Discovery and optimization of potent and selective imidazopyridine and imidazopyridazine mTOR inhibitors.

Peterson, E.A, Boezio, A.A, Andrews, P.S, Boezio, C.M, Bush, T.L, Cheng, A.C, Choquette, D, Coats, J.R, Colletti, A.E, Copeland, K.W, Dupont, M, Graceffa, R, Grubinska, B, Kim, J.L, Lewis, R.T, Liu, J, Mullady, E.L, Potashman, M.H, Romero, K, Shaffer, P.L, Stanton, M.K, Stellwagen, J.C, Teffera, Y, Yi, S, Cai, T, La, D.S.Show

Bioorg.Med.Chem.Lett. 22 4967 4974 (2012)

PMID: 22765895 DOI: 10.1016/j.bmcl.2012.06.033

Abstact

mTOR is a critical regulator of cellular signaling downstream of multiple growth factors. The mTOR/PI3K/AKT pathway is frequently mutated in human cancers and is thus an important oncology target. Herein we report the evolution of our program to discover ATP-competitive mTOR inhibitors that demonstrate improved pharmacokinetic properties and selectivity compared to our previous leads. Through targeted SAR and structure-guided design, new imidazopyridine and imidazopyridazine scaffolds were identified that demonstrated superior inhibition of mTOR in cellular assays, selectivity over the closely related PIKK family and improved in vivo clearance over our previously reported benzimidazole series.

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Primary Citation of related structures

Abstact

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