1E8X

STRUCTURAL INSIGHTS INTO PHOSHOINOSITIDE 3-KINASE ENZYMATIC MECHANISM AND SIGNALLING

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1e8xa1	All alpha proteins	alpha-alpha superhelix	ARM repeat	Phoshoinositide 3-kinase (PI3K) helical domain	Phoshoinositide 3-kinase (PI3K) helical domain	WILD BOAR (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
A	d1e8xa2	All beta proteins	C2 domain-like	C2 domain (Calcium/lipid-binding domain, CaLB)	PLC-like (P variant)	Phoshoinositide 3-kinase (PI3K)	WILD BOAR (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
A	d1e8xa3	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Ubiquitin-like	Ras-binding domain, RBD	Phoshoinositide 3-kinase (PI3K)	WILD BOAR (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
A	d1e8xa4	Alpha and beta proteins (a+b)	Protein kinase-like (PK-like)	Protein kinase-like (PK-like)	Phoshoinositide 3-kinase (PI3K), catalytic domain	Phoshoinositide 3-kinase (PI3K), catalytic domain	WILD BOAR (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
A	d1e8xa5	Artifacts	Tags	Tags	Tags	N-terminal Tags	WILD BOAR (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Ubiquitin-like	8034485	3000157	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	ARM repeat-like	8038595	3000116	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Protein kinase-like (PK-like)	8036673	3000066	SCOP2B (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	e1e8xA5	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: C2 domain (From Topology)	T: C2 domain	F: PI3K_C2	ECOD (1.6)
A	PI3Ka	e1e8xA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PI3Ka	ECOD (1.6)
A	PI3K_rbd	e1e8xA3	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: PI3K_rbd	ECOD (1.6)
A	PI3_PI4_kinase	e1e8xA4	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	3.10.20.90	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Phosphatidylinositol 3-kinase Catalytic Subunit	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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PHOSPHATIDYLINOSITOL 3-KINASE CATALYTIC SUBUNIT	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 1-phosphatidylinositol-4-phosphate 3-kinase activity catalytic activity, acting on a protein protein kinase activity protein serine kinase activity 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 1-phosphatidylinositol-4-phosphate 3-kinase activity catalytic activity, acting on a protein protein kinase activity protein serine kinase activity binding 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 protein serine/threonine kinase activity	cellular biosynthetic process glycerophospholipid metabolic process lipid biosynthetic process phospholipid metabolic process phosphate-containing compound metabolic process phosphorus metabolic process phosphatidylinositol metabolic process glycerophospholipid biosynthetic process phosphatidylinositol-3-phosphate biosynthetic process cellular metabolic process primary metabolic process phosphatidylinositol phosphate biosynthetic process phospholipid biosynthetic process phosphatidylinositol biosynthetic process cellular biosynthetic process glycerophospholipid metabolic process lipid biosynthetic process phospholipid metabolic process phosphate-containing compound metabolic process phosphorus metabolic process phosphatidylinositol metabolic process glycerophospholipid biosynthetic process phosphatidylinositol-3-phosphate biosynthetic process cellular metabolic process primary metabolic process phosphatidylinositol phosphate biosynthetic process phospholipid biosynthetic process phosphatidylinositol biosynthetic process biosynthetic process glycerolipid biosynthetic process organophosphate metabolic process organophosphate biosynthetic process cellular lipid metabolic process metabolic process cellular process glycerolipid metabolic process lipid metabolic process developmental process multicellular organismal process blood vessel morphogenesis tube development angiogenesis vasculature development circulatory system development multicellular organism development anatomical structure morphogenesis tube morphogenesis anatomical structure development anatomical structure formation involved in morphogenesis blood vessel development system development cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation intracellular signal transduction cell communication intracellular signaling cassette signal transduction phosphatidylinositol 3-kinase/protein kinase B signal transduction localization import into cell transport endocytosis establishment of localization vesicle-mediated transport chemotaxis taxis response to chemical response to external stimulus locomotion immune system process phosphatidylinositol-mediated signaling phospholipase C-activating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway defense response response to stress inflammatory response	cell periphery plasma membrane membrane cellular anatomical entity intracellular anatomical structure cytoplasm protein-containing complex catalytic complex phosphatidylinositol 3-kinase complex, class I membrane protein complex transferase complex phosphatidylinositol 3-kinase complex transferase complex, transferring phosphorus-containing groups phosphatidylinositol 3-kinase complex, class IB cell periphery plasma membrane membrane cellular anatomical entity intracellular anatomical structure cytoplasm protein-containing complex catalytic complex phosphatidylinositol 3-kinase complex, class I membrane protein complex transferase complex phosphatidylinositol 3-kinase complex transferase complex, transferring phosphorus-containing groups phosphatidylinositol 3-kinase complex, class IB extrinsic component of membrane phosphatidylinositol 3-kinase complex, class IA

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	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	IPR045580	PIK3 catalytic subunit gamma, adaptor-binding domain	Domain
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.