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4OVV

Crystal Structure of PI3Kalpha in complex with diC4-PIP2

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoformpolymer1096127822.61UniProt (P42336)
Pfam (PF02192)
Pfam (PF00794)
Pfam (PF00792)
Pfam (PF00613)
Pfam (PF00454)
Homo sapiensPtdIns-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
2B
(B)
Phosphatidylinositol 3-kinase regulatory subunit alphapolymer27933667.01UniProt (P27986)
Pfam (PF00017)
Pfam (PF16454)
Homo sapiensPtdIns-3-kinase regulatory subunit alpha, Phosphatidylinositol 3-kinase 85 kDa regulatory subunit alpha, PtdIns-3-kinase regulatory subunit p85-alpha
3C, E
(A, B)
(2R)-3-{[(R)-HYDROXY{[(1R,2R,3S,4R,5R,6S)-2,3,6-TRIHYDROXY-4,5-BIS(PHOSPHONOOXY)CYCLOHEXYL]OXY}PHOSPHORYL]OXY}PROPANE-1 ,2-DIYL DIBUTANOATEnon-polymer634.42Chemie (PBU)
4D
(A)
PHOSPHATE IONnon-polymer95.01Chemie (PO4)
5F
(A)
waterwater18.04Chemie (HOH)
Sequence modifications
A: 1 - 1068 (UniProt: P42336)
PDBExternal DatabaseDetails
Met -28-expression tag
Ser -27-expression tag
Tyr -26-expression tag
Tyr -25-expression tag
His -24-expression tag
His -23-expression tag
His -22-expression tag
His -21-expression tag
His -20-expression tag
His -19-expression tag
Asp -18-expression tag
Tyr -17-expression tag
Asp -16-expression tag
Ile -15-expression tag
Pro -14-expression tag
Thr -13-expression tag
Thr -12-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 chains2
Total formula weight161489.5
Non-Polymers*Number of molecules3
Total formula weight1363.7
All*Total formula weight162853.2
*Water molecules are not included.

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PDB entries from 2025-07-23

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