CATH Domain 4tv3A04

CATH Classification

Level	CATH Code	Description
	3	Alpha Beta
	3.30	2-Layer Sandwich
	3.30.1010	Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4
	3.30.1010.10	Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4

Domain Context

CATH Clusters

Superfamily	Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 4
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	4TV3
External Links	PDBSum Proteopedia
Method	X-RAY DIFFRACTION
Organism
Primary Citation	Engineering of an isolated p110 alpha subunit of PI3K alpha permits crystallization and provides a platform for structure-based drug design. Chen, P., Deng, Y.L., Bergqvist, S., Falk, M.D., Liu, W., Timofeevski, S., Brooun, A. Protein Sci.