SMTL ID : 8tgd.1 (1 other biounit)

STX-478, a Mutant-Selective, Allosteric Inhibitor bound to H1047R PI3Kalpha

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.93 Å

Oligo State

hetero-1-1-mer

Ligands

10 x EDO: 1,2-ETHANEDIOL(Non-functional Binders)

EDO.1: 6 residues within 4Å: Chain A: E.784, N.785, P.786, D.787, S.790, Q.795 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:Q.795 EDO.2: 3 residues within 4Å: Chain A: E.263, K.264, Y.265 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:E.263, A:K.264 EDO.3: 10 residues within 4Å: Chain A: R.4, S.7, G.8, E.9, C.90, D.91, R.93, E.710, K.711, N.714 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:R.4, A:R.4, A:E.9, A:K.711, A:N.714 EDO.4: 5 residues within 4Å: Chain A: I.191, T.208, L.209, K.210, K.227 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:K.210, A:K.227 EDO.5: 4 residues within 4Å: Chain A: K.206, Y.207, T.208, K.227 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:K.206, A:T.208, A:K.227 EDO.6: 7 residues within 4Å: Chain A: V.166, Y.167, P.168, D.258, Q.661, P.757, A.758 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:D.258, A:Q.661 Water bridges: A:Y.167 EDO.7: 7 residues within 4Å: Chain A: I.633, F.666, H.670, M.811, G.837, C.838, L.839 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:H.670, A:C.838 EDO.8: 4 residues within 4Å: Chain A: E.620, L.623, T.624, K.656 No protein-ligand interaction detected (PLIP) EDO.9: 8 residues within 4Å: Chain A: R.401, V.461, T.462, K.640, Y.641, E.642, Q.643, R.683 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:T.462, A:K.640 EDO.10: 5 residues within 4Å: Chain A: D.431, T.435, L.436, V.437, S.438 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:L.436, A:S.438

1 x X3N: N~2~-{(4S,11aP)-2-[(4S)-4-(difluoromethyl)-2-oxo-1,3-oxazolidin-3-yl]-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepin-9-yl}-L-alaninamide(Non-covalent)

X3N.11: 21 residues within 4Å: Chain A: R.770, M.772, S.774, P.778, W.780, I.800, K.802, D.810, Y.836, I.848, E.849, V.850, V.851, S.854, H.855, T.856, Q.859, M.922, F.930, I.932, D.933 10 PLIP interactions: 10 interactions with chain A Hydrophobic interactions: A:W.780, A:W.780, A:I.800 Hydrogen bonds: A:D.810, A:Y.836, A:V.851, A:S.854, A:Q.859, A:Q.859, A:D.933

1 x ZWE: N-(2-aminopyrimidin-5-yl)-N'-[(1R)-1-(5,7-difluoro-3-methyl-1-benzofuran-2-yl)-2,2,2-trifluoroethyl]urea(Non-covalent)

ZWE.12: 19 residues within 4Å: Chain A: Q.809, L.812, T.813, L.911, G.912, F.937, L.938, K.941, R.949, E.950, V.952, F.1002, M.1010, E.1012, L.1013, D.1018, I.1019, Y.1021, I.1022 11 PLIP interactions: 11 interactions with chain A Hydrophobic interactions: A:F.937, A:L.938, A:L.1013, A:L.1013 Hydrogen bonds: A:L.911, A:L.911, A:K.941, A:R.949, A:E.950 pi-Stacking: A:Y.1021 pi-Cation interactions: A:Y.1021

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Buckbinder, L. et al., STX-478, a Mutant-Selective, Allosteric PI3K alpha Inhibitor Spares Metabolic Dysfunction and Improves Therapeutic Response in PI3K alpha-Mutant Xenografts. Cancer Discov (2023)

Release Date

2023-09-06

Peptides

Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform: A
Phosphatidylinositol 3-kinase regulatory subunit alpha: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform

Phosphatidylinositol 3-kinase regulatory subunit alpha

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