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9NID

Cryo-EM structure of the PI3K alpha/KRas/HER3 phosphopeptide complex dimer on POPC/POPS/PIP2 nanodiscs low-pass filtered to 5 angstroms

This is a non-PDB format compatible entry.
Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoformpolymer1096127822.62UniProt (P42336)Homo sapiens (human)PtdIns-3-kinase subunit alpha, Phosphatidylinositol 4,5-bisphosphate 3-kinase 110 kDa catalytic subunit alpha, p110alpha, Phosphoinositide-3-kinase catalytic alpha polypeptide, Serine/threonine protein kinase PIK3CA
2C, D
(C, D)
Isoform 2B of GTPase KRaspolymer18821459.62UniProt (P01116)Homo sapiens (human)K-Ras 2,Ki-Ras,c-K-ras,c-Ki-ras
3E, F
(A, B)
tert-butyl [2-(2-{[(2P)-2-{4-[4-(2-amino-2-oxoethyl)-2-fluoroanilino]thieno[2,3-d]pyridazin-7-yl}phenyl]oxy}ethoxy)ethyl]carbamatenon-polymer581.72Chemie (A1AZD)
4G, I
(C, D)
MAGNESIUM IONnon-polymer24.32Chemie (MG)
5H, J
(C, D)
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTERnon-polymer522.22Chemie (GNP)
Sequence modifications
A, B: 1 - 1068 (UniProt: P42336)
PDBExternal DatabaseDetails
Met -27-expression tag
Ser -26-expression tag
Tyr -25-expression tag
Tyr -24-expression tag
His -23-expression tag
His -22-expression tag
His -21-expression tag
His -20-expression tag
His -19-expression tag
His -18-expression tag
Asp -17-expression tag
Tyr -16-expression tag
Asp -15-expression tag
Ile -14-expression tag
Pro -13-expression tag
Thr -12-expression tag
Thr -11-expression tag
Glu -10-expression tag
Asn -9-expression tag
Leu -8-expression tag
Tyr -7-expression tag
Phe -6-expression tag
Gln -5-expression tag
Gly -4-expression tag
Ala -3-expression tag
Met -2-expression tag
Gly -1-expression tag
Ser 0-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight298564.4
Non-Polymers*Number of molecules6
Total formula weight2256.3
All*Total formula weight300820.7
*Water molecules are not included.

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PDB entries from 2026-05-13

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