Annotations: 2Y3A

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	PI3K inter-SH2 coiled-coil domain	8045619	4004569	SCOP2 (2022-06-29)
B	SCOP2 Family	SH2 domain	8091448	4001650	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	PI3K inter-SH2 coiled-coil domain	8052380	3002111	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	SH2 domain	8091449	3000197	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PI3K_C2	e2y3aA2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: C2 domain (From Topology)	T: C2 domain	F: PI3K_C2	ECOD (1.6)
A	PI3Ka	e2y3aA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PI3Ka	ECOD (1.6)
A	PI3K_rbd	e2y3aA5	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: PI3K_rbd	ECOD (1.6)
A	PI3K_p85B	e2y3aA6	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: PI3K_p85B	ECOD (1.6)
A	PI3_PI4_kinase	e2y3aA4	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)
B	PI3K_P85_iSH2	e2y3aB3	A: alpha bundles	X: YscO-like	H: Phosphatidylinositol 3-kinase regulatory subunit inter-SH2 domain (From Topology)	T: Phosphatidylinositol 3-kinase regulatory subunit inter-SH2 domain	F: PI3K_P85_iSH2	ECOD (1.6)
B	SH2	e2y3aB2	A: a+b two layers	X: SH2 (From Topology)	H: SH2 (From Topology)	T: SH2	F: SH2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.20.770	Alpha Beta	Roll	Ubiquitin-like (UB roll)		CATH (4.3.0)
A	2.60.40.150	Mainly Beta	Sandwich	Immunoglobulin-like	C2 domain	CATH (4.3.0)
A	1.25.40.70	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat	Phosphatidylinositol 3-kinase, accessory domain (PIK)	CATH (4.3.0)
A	3.30.1010.10	Alpha Beta	2-Layer Sandwich	Phosphatidylinositol 3-kinase Catalytic Subunit	Chain A, domain 4	CATH (4.3.0)
A	1.10.1070.11	Mainly Alpha	Orthogonal Bundle	Phosphatidylinositol 3-kinase Catalytic Subunit	Chain A, Domain 5	CATH (4.3.0)
B	1.10.287.1490	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
B	3.30.505.10	Alpha Beta	2-Layer Sandwich	SHC Adaptor Protein	SH2 domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02192	PI3-kinase family, p85-binding domain (PI3K_p85B)	PI3-kinase family, p85-binding domain	-	Family
A	PF00792	Phosphoinositide 3-kinase C2 (PI3K_C2)	Phosphoinositide 3-kinase C2	Phosphoinositide 3-kinase region postulated to contain a C2 domain. Outlier of Pfam:PF00168 family.	Domain
A	PF00794	PI3-kinase family, ras-binding domain (PI3K_rbd)	PI3-kinase family, ras-binding domain	Certain members of the PI3K family possess Ras-binding domains in their N-termini. These regions show some similarity (although not highly significant similarity) to Ras-binding Pfam:PF00788 domains (unpublished observation).	Domain
A	PF00454	Phosphatidylinositol 3- and 4-kinase (PI3_PI4_kinase)	Phosphatidylinositol 3- and 4-kinase	-	Family
B	PF00017	SH2 domain (SH2)	SH2 domain	-	Domain

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 BETA ISOFORM	kinase activity transferase activity catalytic activity transferase activity, transferring phosphorus-containing groups protein binding binding insulin receptor substrate binding phosphatidylinositol kinase activity lipid kinase activity 1-phosphatidylinositol-3-kinase activity phosphotransferase activity, alcohol group as acceptor adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding kinase activity transferase activity catalytic activity transferase activity, transferring phosphorus-containing groups protein binding binding insulin receptor substrate binding phosphatidylinositol kinase activity lipid kinase activity 1-phosphatidylinositol-3-kinase activity phosphotransferase activity, alcohol group as acceptor adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity catalytic activity, acting on a protein protein kinase activity protein serine kinase activity	regulation of biosynthetic process regulation of nitric oxide biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process reactive nitrogen species metabolic process positive regulation of nitric oxide metabolic process nitric oxide metabolic process positive regulation of metabolic process nitric oxide biosynthetic process biosynthetic process positive regulation of biosynthetic process cellular process regulation of biosynthetic process regulation of nitric oxide biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process reactive nitrogen species metabolic process positive regulation of nitric oxide metabolic process nitric oxide metabolic process positive regulation of metabolic process nitric oxide biosynthetic process biosynthetic process positive regulation of biosynthetic process cellular process metabolic process regulation of nitric oxide metabolic process positive regulation of nitric oxide biosynthetic process regulation of metabolic process positive regulation of cellular process developmental process multicellular organism development multicellular organismal process embryonic cleavage anatomical structure development cell division embryo development homeostatic process leukocyte apoptotic process regulation of programmed cell death regulation of neutrophil apoptotic process positive regulation of myeloid cell apoptotic process positive regulation of neutrophil apoptotic process regulation of immune system process myeloid cell homeostasis positive regulation of leukocyte apoptotic process positive regulation of immune system process regulation of leukocyte apoptotic process myeloid cell apoptotic process positive regulation of programmed cell death regulation of apoptotic process cell death positive regulation of apoptotic process neutrophil homeostasis neutrophil apoptotic process multicellular organismal-level homeostasis leukocyte homeostasis immune system process inflammatory cell apoptotic process homeostasis of number of cells apoptotic process programmed cell death regulation of myeloid cell apoptotic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of gene expression regulation of macromolecule biosynthetic process positive regulation of macromolecule metabolic process macromolecule metabolic process response to stimulus response to stress response to ischemia catabolic process autophagy process utilizing autophagic mechanism inorganic ion homeostasis intracellular calcium ion homeostasis calcium ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis regulation of body fluid levels wound healing cell activation hemostasis blood coagulation coagulation regulation of biological quality response to wounding platelet activation cellular response to stimulus regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction signaling negative regulation of signaling negative regulation of intracellular signal transduction negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction negative regulation of biological process regulation of signal transduction intracellular signal transduction negative regulation of cell communication cell communication regulation of intracellular signal transduction intracellular signaling cassette negative regulation of cellular process signal transduction regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction regulation of response to stimulus regulation of cell communication phosphatidylinositol 3-kinase/protein kinase B signal transduction cellular response to growth factor stimulus negative regulation of vascular endothelial growth factor signaling pathway negative regulation of cellular response to growth factor stimulus cell surface receptor protein tyrosine kinase signaling pathway cellular response to endogenous stimulus regulation of vascular endothelial growth factor signaling pathway enzyme-linked receptor protein signaling pathway regulation of cellular response to vascular endothelial growth factor stimulus cell surface receptor signaling pathway response to endogenous stimulus regulation of cellular response to growth factor stimulus vascular endothelial growth factor signaling pathway cellular response to vascular endothelial growth factor stimulus response to growth factor negative regulation of cellular response to vascular endothelial growth factor stimulus phosphorylation phosphate-containing compound metabolic process phosphorus metabolic process cell adhesion cell-cell adhesion cell-cell adhesion via plasma-membrane adhesion molecules homophilic cell adhesion via plasma membrane adhesion molecules sphingolipid mediated signaling pathway sphingosine-1-phosphate receptor signaling pathway G protein-coupled receptor signaling pathway blood vessel morphogenesis tube development angiogenesis involved in wound healing angiogenesis vasculature development circulatory system development anatomical structure morphogenesis tube morphogenesis anatomical structure formation involved in morphogenesis blood vessel development system development positive regulation of cell communication small GTPase-mediated signal transduction positive regulation of signal transduction regulation of small GTPase mediated signal transduction positive regulation of response to stimulus Rac protein signal transduction positive regulation of intracellular signal transduction regulation of Rac protein signal transduction positive regulation of Rac protein signal transduction positive regulation of small GTPase mediated signal transduction positive regulation of signaling cell population proliferation endothelial cell proliferation epithelial cell proliferation cell-matrix adhesion regulation of cell-matrix adhesion regulation of cell-substrate adhesion regulation of cell adhesion cell-substrate adhesion cellular response to oxygen levels cellular response to hypoxia regulation of cellular response to stress negative regulation of apoptotic signaling pathway intrinsic apoptotic signaling pathway response to decreased oxygen levels negative regulation of programmed cell death negative regulation of apoptotic process intrinsic apoptotic signaling pathway in response to hypoxia response to hypoxia response to chemical response to oxygen levels response to abiotic stimulus regulation of apoptotic signaling pathway regulation of cellular response to hypoxia cellular response to decreased oxygen levels regulation of intrinsic apoptotic signaling pathway cellular response to stress regulation of response to stress regulation of hypoxia-induced intrinsic apoptotic signaling pathway negative regulation of cellular response to hypoxia apoptotic signaling pathway negative regulation of intrinsic apoptotic signaling pathway cellular response to chemical stimulus negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway positive regulation of locomotion regulation of cell motility endothelial cell migration positive regulation of cell migration regulation of locomotion positive regulation of endothelial cell migration positive regulation of cell motility regulation of cell migration regulation of endothelial cell migration cell migration cell motility locomotion regulation of sprouting angiogenesis regulation of developmental process regulation of vasculature development regulation of multicellular organismal process regulation of anatomical structure morphogenesis regulation of multicellular organismal development negative regulation of blood vessel morphogenesis negative regulation of developmental process negative regulation of angiogenesis sprouting angiogenesis negative regulation of vasculature development regulation of angiogenesis negative regulation of multicellular organismal process negative regulation of sprouting angiogenesis phosphatidylinositol metabolic process glycerophospholipid biosynthetic process glycerophospholipid metabolic process lipid biosynthetic process primary metabolic process phosphatidylinositol phosphate biosynthetic process phospholipid biosynthetic process phosphatidylinositol biosynthetic process phospholipid metabolic process glycerolipid biosynthetic process organophosphate metabolic process organophosphate biosynthetic process glycerolipid metabolic process lipid metabolic process localization import into cell transport endocytosis establishment of localization vesicle-mediated transport regulation of MAPK cascade MAPK cascade negative regulation of MAPK cascade	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex catalytic complex membrane phosphatidylinositol 3-kinase complex, class I membrane protein complex transferase complex phosphatidylinositol 3-kinase complex, class IA phosphatidylinositol 3-kinase complex transferase complex, transferring phosphorus-containing groups extrinsic component of membrane cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex catalytic complex membrane phosphatidylinositol 3-kinase complex, class I membrane protein complex transferase complex phosphatidylinositol 3-kinase complex, class IA phosphatidylinositol 3-kinase complex transferase complex, transferring phosphorus-containing groups extrinsic component of membrane midbody membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle membraneless organelle nuclear lumen nucleoplasm
B	PHOSPHATIDYLINOSITOL 3-KINASE REGULATORY SUBUNIT BETA	protein heterodimerization activity protein binding binding protein dimerization activity phosphatidylinositol 3-kinase binding phosphatidylinositol 3-kinase regulatory subunit binding phosphoprotein binding phosphotyrosine residue binding protein phosphorylated amino acid binding protein phosphatase binding phosphatase binding enzyme binding protein tyrosine kinase binding kinase binding protein heterodimerization activity protein binding binding protein dimerization activity phosphatidylinositol 3-kinase binding phosphatidylinositol 3-kinase regulatory subunit binding phosphoprotein binding phosphotyrosine residue binding protein phosphorylated amino acid binding protein phosphatase binding phosphatase binding enzyme binding protein tyrosine kinase binding kinase binding signaling receptor binding receptor tyrosine kinase binding protein kinase binding	cellular homeostasis chemical homeostasis homeostatic process glucose homeostasis carbohydrate homeostasis intracellular chemical homeostasis intracellular glucose homeostasis regulation of cytoskeleton organization regulation of cellular process regulation of cellular component organization regulation of actin filament-based process regulation of actin filament bundle assembly cellular component biogenesis cellular component organization cellular homeostasis chemical homeostasis homeostatic process glucose homeostasis carbohydrate homeostasis intracellular chemical homeostasis intracellular glucose homeostasis regulation of cytoskeleton organization regulation of cellular process regulation of cellular component organization regulation of actin filament-based process regulation of actin filament bundle assembly cellular component biogenesis cellular component organization cellular component assembly actin filament bundle organization actin filament-based process cellular component organization or biogenesis stress fiber assembly regulation of biological process regulation of actin filament organization actin cytoskeleton organization actomyosin structure organization biological regulation actin filament organization regulation of cellular component biogenesis regulation of organelle organization regulation of stress fiber assembly organelle organization contractile actin filament bundle assembly regulation of actomyosin structure organization actin filament bundle assembly regulation of actin cytoskeleton organization regulation of supramolecular fiber organization cellular process supramolecular fiber organization cytoskeleton organization cellular response to stimulus response to stimulus signaling intracellular signal transduction cell communication intracellular signaling cassette signal transduction phosphatidylinositol 3-kinase/protein kinase B signal transduction protein localization establishment of protein localization cellular localization nitrogen compound transport transport establishment of localization localization protein transport cellular macromolecule localization macromolecule localization regulation of localization regulation of protein localization nucleocytoplasmic transport positive regulation of nucleocytoplasmic transport nuclear transport positive regulation of biological process positive regulation of establishment of protein localization regulation of protein localization to nucleus positive regulation of protein transport import into nucleus regulation of protein import into nucleus establishment of localization in cell protein import into nucleus positive regulation of intracellular transport positive regulation of cellular process regulation of intracellular transport regulation of transport positive regulation of protein localization to nucleus regulation of establishment of protein localization positive regulation of protein import into nucleus intracellular transport regulation of nucleocytoplasmic transport protein localization to nucleus regulation of protein transport positive regulation of transport establishment of protein localization to organelle regulation of cellular localization protein localization to organelle positive regulation of protein localization regulation of intracellular protein transport positive regulation of intracellular protein transport intracellular protein transport cell adhesion positive regulation of cell adhesion regulation of cell adhesion negative regulation of signaling negative regulation of intracellular signal transduction negative regulation of biological process regulation of signal transduction negative regulation of cell communication regulation of intracellular signal transduction negative regulation of cellular process regulation of signaling negative regulation of response to stimulus regulation of MAPK cascade negative regulation of signal transduction regulation of response to stimulus MAPK cascade regulation of cell communication negative regulation of MAPK cascade cellular response to nitrogen compound response to peptide hormone insulin receptor signaling pathway cell surface receptor protein tyrosine kinase signaling pathway cellular response to endogenous stimulus response to hormone enzyme-linked receptor protein signaling pathway cellular response to hormone stimulus cell surface receptor signaling pathway response to endogenous stimulus response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical response to insulin cellular response to insulin stimulus protein localization to cell periphery protein localization to plasma membrane localization within membrane regulation of protein localization to cell periphery protein localization to membrane regulation of protein localization to plasma membrane regulation of protein localization to membrane catabolic process autophagy regulation of catabolic process regulation of autophagy metabolic process process utilizing autophagic mechanism regulation of metabolic process positive regulation of DNA-templated transcription RNA metabolic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process primary metabolic process regulation of macromolecule metabolic process positive regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process regulation of gene expression biosynthetic process positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of cellular component size regulation of protein-containing complex assembly protein-containing complex assembly regulation of actin filament polymerization regulation of biological quality protein polymerization actin polymerization or depolymerization actin filament polymerization protein-containing complex organization regulation of actin polymerization or depolymerization regulation of protein polymerization regulation of actin filament length regulation of anatomical structure size cellular response to stress response to stress response to endoplasmic reticulum stress	cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction protein-containing complex catalytic complex membrane phosphatidylinositol 3-kinase complex, class I membrane protein complex transferase complex phosphatidylinositol 3-kinase complex, class IA phosphatidylinositol 3-kinase complex transferase complex, transferring phosphorus-containing groups cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction protein-containing complex catalytic complex membrane phosphatidylinositol 3-kinase complex, class I membrane protein complex transferase complex phosphatidylinositol 3-kinase complex, class IA phosphatidylinositol 3-kinase complex transferase complex, transferring phosphorus-containing groups extrinsic component of membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR015433	Phosphatidylinositol kinase	Family
A	IPR016024	Armadillo-type fold	Homologous Superfamily
A	IPR002420	C2 phosphatidylinositol 3-kinase-type domain	Domain
A	IPR018936	Phosphatidylinositol 3/4-kinase, conserved site	Conserved Site
A	IPR000403	Phosphatidylinositol 3-/4-kinase, catalytic domain	Domain
A	IPR001263	Phosphoinositide 3-kinase, accessory (PIK) domain	Domain
A	IPR042236	Phosphoinositide 3-kinase, accessory (PIK) domain superfamily	Homologous Superfamily
A	IPR037702	PI3Kbeta, catalytic domain	Domain
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
B	IPR036860	SH2 domain superfamily	Homologous Superfamily
B	IPR000980	SH2 domain	Domain
B	IPR035586	Phosphatidylinositol 3-kinase regulatory subunit beta, SH3 domain	Domain
B	IPR036028	SH3-like domain superfamily	Homologous Superfamily
B	IPR008936	Rho GTPase activation protein	Homologous Superfamily
B	IPR035020	PI3K p85 subunit, C-terminal SH2 domain	Domain
B	IPR000198	Rho GTPase-activating protein domain	Domain
B	IPR032498	PI3K regulatory subunit p85-related , inter-SH2 domain	Domain
B	IPR001452	SH3 domain	Domain
B	IPR035022	PI3K p85 subunit, N-terminal SH2 domain	Domain