CATH Domain 5fi4A03

CATH Classification

Level	CATH Code	Description
	1	Mainly Alpha
	1.25	Alpha Horseshoe
	1.25.40	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat
	1.25.40.70	Phosphatidylinositol 3-kinase, accessory domain (PIK)

Domain Context

CATH Clusters

Superfamily	Phosphatidylinositol 3-kinase, accessory domain (PIK)
Functional Family	Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit

Enzyme Information

2.7.1.153	Phosphatidylinositol-4,5-bisphosphate 3-kinase. based on mapping to UniProt P42336 ATP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate = ADP + 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate. -!- This enzyme also catalyzes the phosphorylation of PtdIns4P to PtdIns(3,4)P(2), and of PtdIns to PtdIns3P.
2.7.11.1	Non-specific serine/threonine protein kinase. based on mapping to UniProt P42336 ATP + a protein = ADP + a phosphoprotein. -!- This is a heterogeneous group of serine/threonine protein kinases that do not have an activating compound and are either non-specific or their specificity has not been analyzed to date. -!- Formerly EC 2.7.1.37 and EC 2.7.1.70.

UniProtKB Entries (1)

PK3CA_HUMAN

Homo sapiens

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

PDB Structure

PDB	5FI4
External Links	PDBSum Proteopedia
Method	X-RAY DIFFRACTION
Organism
Primary Citation	Discovery of imidazo[1,2-a]-pyridine inhibitors of pan-PI3 kinases that are efficacious in a mouse xenograft model. Han, W., Menezes, D.L., Xu, Y., Knapp, M.S., Elling, R., Burger, M.T., Ni, Z.J., Smith, A., Lan, J., Williams, T.E., Verhagen, J., Huh, K., Merritt, H., Chan, J., Kaufman, S., Voliva, C.F., Pecchi, S. Bioorg.Med.Chem.Lett.