2ARP

Activin A in complex with Fs12 fragment of follistatin

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	d2arpa_	Small proteins	Cystine-knot cytokines	Cystine-knot cytokines	Transforming growth factor (TGF)-beta	Activin A (Inhibin beta A)	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	SCOP2B Superfamily	Cystine-knot cytokines	8037309	3000846	SCOP2B (2022-06-29)
B [auth F]	SCOP2B Superfamily	Kazal-type serine protease inhibitors	8032571	3000605	SCOP2B (2022-06-29)
B [auth F]	SCOP2B Superfamily	EGF/Laminin-like	8032570	3000412	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	PF00019	e2arpA2	A: few secondary structure elements	X: Cystine-knot cytokines (From Topology)	H: Cystine-knot cytokines (From Topology)	T: Cystine-knot cytokines	F: PF00019	ECOD (1.6)
B [auth F]	PF07648	e2arpF2	A: few secondary structure elements	X: Kazal-type serine protease inhibitors-like	H: Kazal-type serine protease inhibitors (From Topology)	T: Kazal-type serine protease inhibitors	F: PF07648	ECOD (1.6)
B [auth F]	F_UNCLASSIFIED	e2arpF3	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: F_UNCLASSIFIED	ECOD (1.6)
B [auth F]	PF09289	e2arpF4	A: few secondary structure elements	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: PF09289	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.10.90.10	Mainly Beta	Ribbon	Cystine Knot Cytokines, subunit B	Cystine-knot cytokines	CATH (4.3.0)
B [auth F]	3.30.60.30	Alpha Beta	2-Layer Sandwich	Wheat Germ Agglutinin (Isolectin 2)	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00019	Transforming growth factor beta like domain (TGF_beta)	Transforming growth factor beta like domain	-	Domain
B [auth F]	PF09289	Follistatin/Osteonectin-like EGF domain (FOLN)	Follistatin/Osteonectin-like EGF domain	Members of this family are predominantly found in osteonectin and follistatin and adopt an EGF-like fold [1,2].	Domain
B [auth F]	PF07648	Kazal-type serine protease inhibitor domain (Kazal_2)	Kazal-type serine protease inhibitor domain	Usually indicative of serine protease inhibitors. However, kazal-like domains are also seen in the extracellular part of agrins, which are not known to be protease inhibitors. Kazal domains often occur in tandem arrays. Small alpha+beta fold containi ...	Usually indicative of serine protease inhibitors. However, kazal-like domains are also seen in the extracellular part of agrins, which are not known to be protease inhibitors. Kazal domains often occur in tandem arrays. Small alpha+beta fold containing three disulphides.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Inhibin beta A chain	protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity protein-containing complex binding amide binding peptide hormone binding hormone binding identical protein binding protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity protein-containing complex binding amide binding peptide hormone binding hormone binding identical protein binding cytokine activity hormone activity activin receptor binding receptor serine/threonine kinase binding type II activin receptor binding transmembrane receptor protein serine/threonine kinase binding	developmental process multicellular organismal process gonad development reproductive system development reproductive process sex differentiation animal organ development developmental process involved in reproduction male gonad development male sex differentiation multicellular organism development development of primary male sexual characteristics development of primary sexual characteristics anatomical structure development reproductive structure development developmental process multicellular organismal process gonad development reproductive system development reproductive process sex differentiation animal organ development developmental process involved in reproduction male gonad development male sex differentiation multicellular organism development development of primary male sexual characteristics development of primary sexual characteristics anatomical structure development reproductive structure development system development cellular response to stimulus positive regulation of cell communication cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process positive regulation of signal transduction response to stimulus signaling regulation of transmembrane receptor protein serine/threonine kinase signaling pathway positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette signal transduction enzyme-linked receptor protein signaling pathway positive regulation of cellular process regulation of biological process regulation of signaling cell surface receptor signaling pathway biological regulation positive regulation of intracellular signal transduction positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway SMAD protein signal transduction regulation of response to stimulus regulation of cell communication cellular process regulation of SMAD protein signal transduction positive regulation of SMAD protein signal transduction positive regulation of signaling response to organic substance response to sterol response to lipid response to alcohol cellular response to organic cyclic compound response to oxygen-containing compound response to cholesterol cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to alcohol response to chemical cellular response to lipid cellular response to sterol cellular response to organic substance cellular response to cholesterol response to organic cyclic compound response to cytokine cytokine-mediated signaling pathway cellular response to cytokine stimulus signal transduction in absence of ligand regulation of programmed cell death positive regulation of extrinsic apoptotic signaling pathway in absence of ligand extrinsic apoptotic signaling pathway positive regulation of apoptotic signaling pathway extrinsic apoptotic signaling pathway in absence of ligand positive regulation of programmed cell death regulation of apoptotic process 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 extrinsic apoptotic signaling pathway in absence of ligand apoptotic process programmed cell death regulation of apoptotic signaling pathway cellular biosynthetic process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process organic substance metabolic process positive regulation of biosynthetic process organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of biosynthetic process cellular metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process positive regulation of gene expression regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular biosynthetic process response to decreased oxygen levels cellular response to oxygen levels cellular response to hypoxia cellular response to decreased oxygen levels cellular response to stress response to hypoxia response to stress response to oxygen levels response to abiotic stimulus cellular catabolic process catabolic process autophagy process utilizing autophagic mechanism regulation of leukocyte differentiation myeloid leukocyte differentiation cellular developmental process regulation of developmental process negative regulation of biological process cell development regulation of cell differentiation mononuclear cell differentiation regulation of cell development cell differentiation negative regulation of cellular process regulation of immune system process regulation of multicellular organismal process negative regulation of cell differentiation negative regulation of macrophage differentiation regulation of macrophage differentiation negative regulation of hemopoiesis regulation of multicellular organismal development negative regulation of leukocyte differentiation hemopoiesis regulation of myeloid cell differentiation negative regulation of developmental process macrophage differentiation regulation of myeloid leukocyte differentiation negative regulation of myeloid cell differentiation negative regulation of myeloid leukocyte differentiation negative regulation of cell development myeloid cell differentiation negative regulation of immune system process immune system process regulation of hemopoiesis negative regulation of multicellular organismal process leukocyte differentiation cell-cell signaling regulation of growth regulation of cellular component organization growth negative regulation of cell growth regulation of cell growth cell growth cellular component organization negative regulation of growth cellular component organization or biogenesis defense response female gonad development female sex differentiation development of primary female sexual characteristics ovarian follicle development homeostatic process positive regulation of developmental process positive regulation of cell differentiation myeloid cell homeostasis erythrocyte homeostasis erythrocyte differentiation regulation of erythrocyte differentiation positive regulation of erythrocyte differentiation multicellular organismal-level homeostasis positive regulation of myeloid cell differentiation homeostasis of number of cells nervous system development anatomical structure morphogenesis odontogenesis animal organ morphogenesis cellular response to gonadotropin stimulus response to endogenous stimulus response to gonadotropin cellular response to endogenous stimulus response to hormone cellular response to follicle-stimulating hormone stimulus response to follicle-stimulating hormone cellular response to hormone stimulus regulation of localization system process regulation of system process negative regulation of transport negative regulation of follicle-stimulating hormone secretion localization negative regulation of secretion negative regulation of hormone secretion negative regulation of secretion by cell regulation of biological quality regulation of hormone levels follicle-stimulating hormone secretion establishment of localization regulation of secretion endocrine hormone secretion negative regulation of gonadotropin secretion regulation of endocrine process regulation of hormone secretion gonadotropin secretion transport negative regulation of signaling hormone secretion negative regulation of cell communication secretion by cell regulation of secretion by cell signal release regulation of follicle-stimulating hormone secretion secretion regulation of transport regulation of gonadotropin secretion export from cell endocrine process hormone transport regulation of type II interferon production type II interferon production negative regulation of cellular metabolic process cytokine production regulation of cytokine production negative regulation of type II interferon production negative regulation of macromolecule metabolic process negative regulation of metabolic process negative regulation of cytokine production negative regulation of cellular biosynthetic process negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process response to aldosterone response to ketone response to mineralocorticoid response to corticosteroid response to steroid hormone collagen biosynthetic process regulation of collagen biosynthetic process regulation of collagen metabolic process positive regulation of collagen metabolic process positive regulation of collagen biosynthetic process collagen metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process primary metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process organic cyclic compound metabolic process organic cyclic compound biosynthetic process regulation of DNA-templated transcription positive regulation of DNA-templated transcription RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process regulation of RNA biosynthetic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA biosynthetic process generation of neurons neurogenesis neuron differentiation GABAergic neuron differentiation forebrain development central nervous system neuron differentiation striatum development subpallium development striatal medium spiny neuron differentiation head development forebrain generation of neurons brain development central nervous system development telencephalon development forebrain neuron differentiation organonitrogen compound metabolic process positive regulation of protein metabolic process regulation of protein metabolic process protein metabolic process positive regulation of ERK1 and ERK2 cascade positive regulation of MAPK cascade regulation of MAPK cascade MAPK cascade ERK1 and ERK2 cascade regulation of ERK1 and ERK2 cascade formation of primary germ layer embryonic morphogenesis tissue development embryo development gastrulation endoderm development anatomical structure formation involved in morphogenesis endoderm formation endodermal cell differentiation epithelium development epidermis development molting cycle process hair cycle skin development skin epidermis development hair follicle development molting cycle hair cycle process activin receptor signaling pathway transforming growth factor beta receptor superfamily signaling pathway regulation of leukocyte activation regulation of cell activation lymphocyte differentiation negative regulation of lymphocyte differentiation negative regulation of leukocyte activation lymphocyte activation negative regulation of lymphocyte activation leukocyte activation regulation of B cell differentiation B cell differentiation regulation of B cell activation negative regulation of B cell activation negative regulation of B cell differentiation regulation of lymphocyte differentiation B cell activation cell activation negative regulation of cell activation regulation of lymphocyte activation phosphorylation negative regulation of phosphate metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process negative regulation of phosphorus metabolic process regulation of phosphorus metabolic process regulation of phosphorylation negative regulation of phosphorylation phosphorus metabolic process positive regulation of multicellular organismal process positive regulation of secretion by cell positive regulation of hormone secretion positive regulation of secretion positive regulation of follicle-stimulating hormone secretion positive regulation of gonadotropin secretion positive regulation of transport cellular process involved in reproduction in multicellular organism luteinization organic substance transport lipid transport lipid export from cell ovulation cycle process steroid hormone secretion progesterone secretion ovulation cycle rhythmic process multicellular organismal reproductive process lipid localization macromolecule localization hemoglobin biosynthetic process organonitrogen compound biosynthetic process hemoglobin metabolic process negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation regulation of cell cycle phase transition negative regulation of cell cycle cell cycle phase transition regulation of cell cycle G1/S phase transition cell cycle G1/S phase transition mitotic cell cycle negative regulation of mitotic cell cycle regulation of mitotic cell cycle negative regulation of cell cycle phase transition cell cycle regulation of cell cycle cell cycle process negative regulation of G1/S transition of mitotic cell cycle negative regulation of mitotic cell cycle phase transition regulation of cell cycle process negative regulation of cell cycle G1/S phase transition negative regulation of cell cycle process regulation of mitotic cell cycle phase transition mitotic cell cycle process regulation of G1/S transition of mitotic cell cycle G1/S transition of mitotic cell cycle mitotic cell cycle phase transition mesodermal cell differentiation mesoderm morphogenesis tissue morphogenesis mesoderm formation mesoderm development positive regulation of phosphorylation regulation of protein modification process regulation of protein phosphorylation positive regulation of phosphate metabolic process positive regulation of protein modification process positive regulation of protein phosphorylation protein modification process protein phosphorylation positive regulation of phosphorus metabolic process macromolecule modification ovulation sexual reproduction regulation of reproductive process female gamete generation gamete generation regulation of ovulation positive regulation of ovulation positive regulation of reproductive process regulation of transcription by RNA polymerase III positive regulation of transcription by RNA polymerase III transcription by RNA polymerase III eyelid development in camera-type eye sensory organ development eye development visual system development camera-type eye development sensory system development hematopoietic progenitor cell differentiation roof of mouth development cellular response to nitrogen compound response to angiotensin response to organonitrogen compound response to peptide hormone cellular response to peptide hormone stimulus cellular response to angiotensin response to nitrogen compound cellular response to organonitrogen compound response to nutrient levels cellular response to nutrient levels cellular response to oxygen-glucose deprivation response to oxygen-glucose deprivation heart development cardiac fibroblast cell differentiation cardiocyte differentiation circulatory system development cardiac fibroblast cell development cardiac cell development	inhibin complex protein-containing complex inhibin A complex extracellular region extracellular space cellular anatomical entity intracellular anatomical structure perinuclear region of cytoplasm cytoplasm activin A complex activin complex
B [auth F]	Follistatin	protein-containing complex binding activin binding binding activin receptor antagonist activity molecular function inhibitor activity protein binding signaling receptor binding molecular function regulator activity signaling receptor inhibitor activity receptor antagonist activity signaling receptor regulator activity heparan sulfate proteoglycan binding proteoglycan binding carbohydrate derivative binding protein-containing complex binding activin binding binding activin receptor antagonist activity molecular function inhibitor activity protein binding signaling receptor binding molecular function regulator activity signaling receptor inhibitor activity receptor antagonist activity signaling receptor regulator activity heparan sulfate proteoglycan binding proteoglycan binding carbohydrate derivative binding sulfur compound binding	developmental process multicellular organism development multicellular organismal process anatomical structure development pattern specification process cellular developmental process cell differentiation cellular process cellular response to stimulus cellular response to BMP stimulus regulation of biological process cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process cellular response to growth factor stimulus developmental process multicellular organism development multicellular organismal process anatomical structure development pattern specification process cellular developmental process cell differentiation cellular process cellular response to stimulus cellular response to BMP stimulus regulation of biological process cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process cellular response to growth factor stimulus cell surface receptor signaling pathway response to stimulus signaling response to endogenous stimulus biological regulation cell communication cellular response to endogenous stimulus response to BMP transforming growth factor beta receptor superfamily signaling pathway signal transduction response to growth factor BMP signaling pathway enzyme-linked receptor protein signaling pathway sexual reproduction reproductive process multicellular organismal reproductive process gamete generation activin receptor signaling pathway negative regulation of signaling regulation of transmembrane receptor protein serine/threonine kinase signaling pathway negative regulation of biological process regulation of signal transduction negative regulation of cell communication negative regulation of activin receptor signaling pathway negative regulation of cellular process regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction regulation of response to stimulus regulation of cell communication regulation of activin receptor signaling pathway negative regulation of transmembrane receptor protein serine/threonine kinase signaling pathway anatomical structure morphogenesis odontogenesis of dentin-containing tooth odontogenesis animal organ development animal organ morphogenesis skeletal system development system development cell population proliferation epithelial cell proliferation keratinocyte proliferation regulation of developmental process regulation of cell differentiation epithelial cell differentiation regulation of epithelial cell differentiation regulation of multicellular organismal process negative regulation of cell differentiation epithelium development regulation of multicellular organismal development negative regulation of epithelial cell differentiation negative regulation of developmental process tissue development epidermis development molting cycle process hair cycle epidermis morphogenesis morphogenesis of an epithelium tissue morphogenesis skin development skin epidermis development hair follicle development molting cycle hair cycle process hair follicle morphogenesis regulation of BMP signaling pathway regulation of cellular response to growth factor stimulus positive regulation of biological process regulation of hair cycle positive regulation of developmental process positive regulation of hair follicle development regulation of hair follicle development positive regulation of multicellular organismal process regulation of localization system process regulation of system process negative regulation of transport negative regulation of follicle-stimulating hormone secretion localization negative regulation of secretion negative regulation of hormone secretion negative regulation of secretion by cell regulation of biological quality regulation of hormone levels follicle-stimulating hormone secretion establishment of localization regulation of secretion endocrine hormone secretion negative regulation of gonadotropin secretion negative regulation of multicellular organismal process regulation of endocrine process regulation of hormone secretion gonadotropin secretion transport hormone secretion secretion by cell regulation of secretion by cell signal release regulation of follicle-stimulating hormone secretion secretion regulation of transport regulation of gonadotropin secretion cell-cell signaling export from cell endocrine process hormone transport hemopoiesis cell development hematopoietic progenitor cell differentiation negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process negative regulation of biosynthetic process response to organic substance response to chemical response to organic cyclic compound ameloblast differentiation columnar/cuboidal epithelial cell differentiation gonad development reproductive system development female gonad development sex differentiation female sex differentiation development of primary female sexual characteristics developmental process involved in reproduction development of primary sexual characteristics reproductive structure development	intracellular anatomical structure cytoplasm cellular anatomical entity extracellular region extracellular space membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR029034	Cystine-knot cytokine	Homologous Superfamily
A	IPR017948	Transforming growth factor beta, conserved site	Conserved Site
A	IPR001839	Transforming growth factor-beta, C-terminal	Domain
A	IPR015615	Transforming growth factor-beta-related	Family
A	IPR000491	Inhibin, beta A subunit	Family
A	IPR001111	TGF-beta, propeptide	Domain
B [auth F]	IPR015369	Follistatin/Osteonectin EGF domain	Domain
B [auth F]	IPR036058	Kazal domain superfamily	Homologous Superfamily
B [auth F]	IPR002350	Kazal domain	Domain
B [auth F]	IPR003645	Follistatin-like, N-terminal	Domain
B [auth F]	IPR036773	TGF-beta binding (TB) domain superfamily	Homologous Superfamily
B [auth F]	IPR017878	TB domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P08476	uterine cancer acute liver failure preeclampsia uterine corpus leiomyoma ovarian adenocarcinoma leiomyoma ovarian cancer Pre-Eclampsia Sjogren syndrome breast cancer ductal breast carcinoma in situ interstitial cystitis lung adenocarcinoma malignant colon neoplasm nasopharyngeal carcinoma uterine cancer acute liver failure preeclampsia uterine corpus leiomyoma ovarian adenocarcinoma leiomyoma ovarian cancer Pre-Eclampsia Sjogren syndrome breast cancer ductal breast carcinoma in situ interstitial cystitis lung adenocarcinoma malignant colon neoplasm nasopharyngeal carcinoma pancreatic ductal adenocarcinoma tuberculosis adrenoleukodystrophy breast carcinoma gastric carcinoma invasive ductal breast carcinoma lung cancer malignant pancreatic neoplasm pilocytic astrocytoma psoriasis ulcerative colitis atrial fibrillation cystic fibrosis head and neck cancer lung carcinoma medulloblastoma

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 R01GM133198.