MolNFT v1 · #134209 · protein
Crystal structure of PI3KALPHA in complex with fragment 23
5SXB · Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic…: “Crystal structure of PI3KALPHA in complex with fragment 23”. X-ray diffraction, 1 ligand (SOA), 20 pockets (best druggability 0.84). MolNFT v1 #134209 on GenesisL1: 3D…
- PDB
- 5SXB
- Type
- protein
- Length
- 1,270 residues
- Chains
- 2
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform…
- EC
- 2.7.1.153, 2.7.11.1
- UniProt
- P42336, P27986
- Ligands
- SOA
- Pockets
- 20 · best druggability 0.84
Structure
x-ray diffraction · 2 distinct chains · 45% helix, 13% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform (EC 2.7.1.153, 2.7.11.1) | protein | 1058 | 41% helix, 16% strand | P42336 |
| B | Phosphatidylinositol 3-kinase regulatory subunit alpha | protein | 212 | 68% helix, 3% strand | P27986 |
Ligands and binding sites
- SOA · Isatoic anhydride · ligand · chains A, B
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
20 pockets found on a 1 Å grid, 12 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 994 | 0.84 | 0.85 | 86 | empty |
| 2 | 849 | 0.84 | 0.86 | 79 | empty |
| 3 | 295 | 0.78 | 0.90 | 41 | empty |
| 4 | 229 | 0.74 | 0.89 | 43 | empty |
| 5 | 149 | 0.68 | 0.89 | 24 | SOA |
Interfaces
1 interface between chains.
- A–B · 3521 Ų buried · 36 hydrogen bonds · protein-protein
Modifications
Observed in the structure: 2 modified (phosphorylation).
Compared structures
- 5SXB · Crystal Structure of PI3Kalpha in complex with fragment 23 · the same entry in another collection · chain A against A, TM-score 1.00
- P42336 · AlphaFold monomer V2.0 prediction for phosphatidylinositol 4,5-bisphosphate 3-kinase… · a predicted model of the same protein · chain A against A, TM-score 0.96
Analyse
- Open in the research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides and crosslinks on the 3D structure
- Every structure of UniProt P42336
- Every structure of UniProt P27986
- Elsewhere: RCSB PDB 5SXB · PDBe 5SXB · UniProt P42336 · UniProt P27986
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