Annotations: 5T2B

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PI3K_C2	e5t2bA4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: C2 domain (From Topology)	T: C2 domain	F: PI3K_C2	ECOD (1.6)
A	PI3Ka	e5t2bA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PI3Ka	ECOD (1.6)
A	PI3K_rbd	e5t2bA2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: PI3K_rbd	ECOD (1.6)
A	PI3_PI4_kinase	e5t2bA3	A: a+b complex topology	X: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)	H: Protein kinase/SAICAR synthase/ATP-grasp	T: Protein kinase	F: PI3_PI4_kinase	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.150	Mainly Beta	Sandwich	Immunoglobulin-like	C2 domain	CATH (utative)
A	1.25.40.70	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat	Phosphatidylinositol 3-kinase, accessory domain (PIK)	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00454	Phosphatidylinositol 3- and 4-kinase (PI3_PI4_kinase)	Phosphatidylinositol 3- and 4-kinase	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform	phosphatidylinositol kinase activity kinase activity lipid kinase activity transferase activity 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups 1-phosphatidylinositol-3-kinase activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding phosphatidylinositol kinase activity kinase activity lipid kinase activity transferase activity 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups 1-phosphatidylinositol-3-kinase activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding	developmental process cellular developmental process cell differentiation cellular process response to stimulus immune response immune system process adaptive immune response multicellular organismal process multicellular organismal-level homeostasis homeostatic process homeostasis of number of cells cellular response to stimulus regulation of biological process developmental process cellular developmental process cell differentiation cellular process response to stimulus immune response immune system process adaptive immune response multicellular organismal process multicellular organismal-level homeostasis homeostatic process homeostasis of number of cells cellular response to stimulus regulation of biological process regulation of cellular process signaling biological regulation intracellular signal transduction cell communication intracellular signaling cassette signal transduction phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of biosynthetic process positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process B cell activation cell activation lymphocyte activation leukocyte activation biological process involved in interspecies interaction between organisms response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to other organism response to stress innate immune response response to external biotic stimulus B cell homeostasis leukocyte homeostasis lymphocyte homeostasis chemotaxis taxis response to chemical locomotion cell surface receptor signaling pathway regulation of developmental process angiogenesis regulation of vasculature development positive regulation of developmental process multicellular organism development tube morphogenesis anatomical structure development regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development regulation of multicellular organismal development blood vessel morphogenesis tube development positive regulation of angiogenesis vasculature development circulatory system development anatomical structure morphogenesis positive regulation of vasculature development regulation of angiogenesis anatomical structure formation involved in morphogenesis positive regulation of multicellular organismal process defense response to fungus response to fungus inflammatory response	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR015433	Phosphatidylinositol 3-/4-kinase	Family
A	IPR037703	Phosphatidylinositol 3-kinase delta, catalytic domain	Domain
A	IPR016024	Armadillo-type fold	Homologous Superfamily
A	IPR002420	C2 phosphatidylinositol 3-kinase-type domain	Domain
A	IPR000403	Phosphatidylinositol 3-/4-kinase, catalytic domain	Domain
A	IPR001263	Phosphoinositide 3-kinase, accessory (PIK) domain	Domain
A	IPR018936	Phosphatidylinositol 3-/4-kinase, conserved site	Conserved Site
A	IPR042236	Phosphoinositide 3-kinase, accessory (PIK) domain superfamily	Homologous Superfamily
A	IPR036940	Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily	Homologous Superfamily
A	IPR003113	Phosphatidylinositol 3-kinase, adaptor-binding domain	Domain
A	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
A	IPR000341	Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain	Domain
A	IPR035892	C2 domain superfamily	Homologous Superfamily
A	IPR029071	Ubiquitin-like domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.