1B3U | pdb_00001b3u

CRYSTAL STRUCTURE OF CONSTANT REGULATORY DOMAIN OF HUMAN PP2A, PR65ALPHA

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
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1b3ua_	All alpha proteins	alpha-alpha superhelix	ARM repeat	HEAT repeat	Constant regulatory domain of protein phosphatase 2a, pr65alpha	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1b3ub_	All alpha proteins	alpha-alpha superhelix	ARM repeat	HEAT repeat	Constant regulatory domain of protein phosphatase 2a, pr65alpha	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	HEAT repeat	8026189	4001283	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ARM repeat-like	8038568	3000116	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	ARM repeat-like	8038568	3000116	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	HEAT, HEAT_2, PPP2R1A-like_HEAT, VPS15-like_hel	e1b3uA1	A: alpha bundles	X: Repetitive alpha hairpins	H: ARM repeat	T: ARM repeat	F: HEAT, HEAT_2, PPP2R1A-like_HEAT, VPS15-like_hel	ECOD (v294.1)
B		e1b3uB1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: tRNA-binding arm	T: tRNA-binding arm	F:	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (4.3.0)
B	1.25.10.10	Mainly Alpha	Alpha Horseshoe	Leucine-rich Repeat Variant	Leucine-rich Repeat Variant	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02985	HEAT repeat (HEAT)	HEAT repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	PROTEIN (PROTEIN PHOSPHATASE PP2A)	protein antigen binding protein binding binding antigen binding enzyme regulator activity phosphatase regulator activity molecular function regulator activity protein phosphatase regulator activity phosphoric ester hydrolase activity phosphoprotein phosphatase activity protein serine/threonine phosphatase activity catalytic activity, acting on a protein hydrolase activity, acting on ester bonds phosphatase activity protein antigen binding protein binding binding antigen binding enzyme regulator activity phosphatase regulator activity molecular function regulator activity protein phosphatase regulator activity phosphoric ester hydrolase activity phosphoprotein phosphatase activity protein serine/threonine phosphatase activity catalytic activity, acting on a protein hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity protein heterodimerization activity protein dimerization activity	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis meiotic spindle elongation meiotic chromosome segregation sexual reproduction spindle elongation reproductive process microtubule cytoskeleton organization meiotic cell cycle process cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis meiotic spindle elongation meiotic chromosome segregation sexual reproduction spindle elongation reproductive process microtubule cytoskeleton organization meiotic cell cycle process meiotic nuclear division cell cycle chromosome segregation spindle organization cell cycle process meiotic cell cycle organelle fission meiotic spindle organization organelle organization nuclear division nuclear chromosome segregation microtubule-based process cytoskeleton organization mitotic nuclear division chromosome organization sister chromatid segregation mitotic cell cycle mitotic cell cycle process chromosome separation mitotic sister chromatid segregation mitotic sister chromatid separation catabolic process RNA metabolic process macromolecule catabolic process nucleobase-containing compound metabolic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II RNA surveillance RNA catabolic process transcription initiation at RNA polymerase II promoter RNA polymerase II transcription initiation surveillance nuclear RNA surveillance primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process DNA-templated transcription initiation nucleobase-containing compound catabolic process biosynthetic process nucleic acid catabolic process metabolic process macromolecule metabolic process sister chromatid cohesion meiotic sister chromatid cohesion, centromeric centromeric sister chromatid cohesion meiotic sister chromatid cohesion cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction response to stimulus signal transduction in absence of ligand signaling positive regulation of biological process regulation of signal transduction regulation of programmed cell death positive regulation of extrinsic apoptotic signaling pathway in absence of ligand extrinsic apoptotic signaling pathway cell communication positive regulation of apoptotic signaling pathway positive regulation of response to stimulus extrinsic apoptotic signaling pathway in absence of ligand signal transduction positive regulation of cellular process regulation of biological process regulation of signaling positive regulation of programmed cell death cell surface receptor signaling pathway regulation of apoptotic process biological regulation positive regulation of extrinsic apoptotic signaling pathway cell death positive regulation of apoptotic process regulation of extrinsic apoptotic signaling pathway apoptotic signaling pathway regulation of response to stimulus regulation of extrinsic apoptotic signaling pathway in absence of ligand regulation of cell communication apoptotic process programmed cell death regulation of apoptotic signaling pathway positive regulation of signaling regulation of growth growth multicellular organismal process multicellular organismal-level homeostasis leukocyte homeostasis T cell homeostasis homeostatic process immune system process homeostasis of number of cells lymphocyte homeostasis multicellular organismal reproductive process female gamete generation gamete generation female meiotic nuclear division organelle assembly membraneless organelle assembly spindle assembly hippo signaling negative regulation of signaling negative regulation of intracellular signal transduction negative regulation of biological process intracellular signal transduction negative regulation of cell communication regulation of intracellular signal transduction negative regulation of cellular process negative regulation of response to stimulus negative regulation of hippo signaling negative regulation of signal transduction regulation of hippo signaling regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction intracellular signaling cassette phosphatidylinositol 3-kinase/protein kinase B signal transduction meiotic cell cycle process involved in oocyte maturation cellular developmental process regulation of reproductive process cell development cellular process involved in reproduction in multicellular organism developmental process involved in reproduction oocyte development cell differentiation anatomical structure development cell maturation regulation of cell cycle developmental process regulation of cell cycle process oogenesis regulation of meiotic cell cycle process involved in oocyte maturation developmental maturation anatomical structure maturation germ cell development oocyte maturation oocyte differentiation regulation of developmental process regulation of cell differentiation	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle phosphatase complex protein-containing complex catalytic complex protein phosphatase type 2A complex protein serine/threonine phosphatase complex membrane membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle phosphatase complex protein-containing complex catalytic complex protein phosphatase type 2A complex protein serine/threonine phosphatase complex membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space vesicle extracellular membrane-bounded organelle cytosol membraneless organelle chromosome, centromeric region intracellular membraneless organelle chromosome chromosomal region somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection chromatin synapse cell junction glutamatergic synapse cytoskeleton microtubule cytoskeleton INTAC complex nucleus nuclear protein-containing complex cell body neuronal cell body cell periphery plasma membrane lateral plasma membrane FAR/SIN/STRIPAK complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR054573	Phosphatase PP2A regulatory subunit A/Splicing factor 3B subunit 1-like, HEAT repeat	Domain
A, B	IPR016024	Armadillo-type fold	Homologous Superfamily
A, B	IPR021133	HEAT, type 2	Repeat
A, B	IPR011989	Armadillo-like helical	Homologous Superfamily
A, B	IPR055231	PIK3R4-like, middle domain	Domain
A, B	IPR051023	Protein Phosphatase 2A Regulatory Subunit A	Family
A, B	IPR000357	HEAT repeat	Repeat

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P30153	microcephaly-corpus callosum hypoplasia-intellectual disability-facial dysmorphism syndrome intellectual disability Disease Exacerbation gastric neoplasm osteoarthritis hereditary diffuse gastric adenocarcinoma osteoarthritis susceptibility 1 rheumatoid arthritis gastric cancer

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.