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5XGJ

Crystal structure of PI3K complex with an inhibitor

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoformpolymer1048122083.31UniProt (P42336)
Pfam (PF02192)
Pfam (PF00794)
Pfam (PF00792)
Pfam (PF00613)
Pfam (PF00454)
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
2B
(B)
Phosphatidylinositol 3-kinase regulatory subunit alphapolymer27833552.91UniProt (P27986)
Pfam (PF00017)
Pfam (PF16454)
Homo sapiens (Human)PtdIns-3-kinase regulatory subunit alpha,Phosphatidylinositol 3-kinase 85 kDa regulatory subunit alpha,PtdIns-3-kinase regulatory subunit p85-alpha
3C
(A)
3-(4-morpholin-4-ylfuro[3,2-d]pyrimidin-2-yl)-5-[(phenylmethyl)amino]phenolnon-polymer402.41Chemie (84X)
4D
(B)
SULFATE IONnon-polymer96.11Chemie (SO4)
5E, F
(A, B)
waterwater18.024Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight155636.1
Non-Polymers*Number of molecules2
Total formula weight498.5
All*Total formula weight156134.7
*Water molecules are not included.

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PDB entries from 2026-01-28

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