Annotations: 7OLY

Structure of activin A in complex with an ActRIIB-Alk4 fusion reveal insight into activin receptor interactions

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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 C]	SCOP2B Superfamily	Snake toxin-like	8042166	3000545	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	Ribosomal_L36	e7olyA1	A: beta barrels	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ribosomal_L36	ECOD (v294.2)
B [auth C]	Ribosomal_L36	e7olyC1	A: beta barrels	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ribosomal_L36	ECOD (v294.2)
C [auth H]	Ribosomal_L36	e7olyH1	A: beta barrels	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ribosomal_L36	ECOD (v294.2)
D [auth K]	Ribosomal_L36	e7olyK1	A: beta barrels	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ribosomal_L36	ECOD (v294.2)
E [auth L]	Ribosomal_L36	e7olyL1	A: beta barrels	X: Nuclear receptor ligand-binding domain	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ribosomal_L36	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
E [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV4	-	activin receptor type-2b	SAbDab (2026-05-08)
E [auth L]	Light Chain	IGKV4	Kappa	activin receptor type-2b	SAbDab (2026-05-08)

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 C]	PF01064	Activin types I and II receptor domain (Activin_recp)	Activin types I and II receptor domain	This Pfam entry consists of both TGF-beta receptor types. This is an alignment of the hydrophilic cysteine-rich ligand-binding domains, Both receptor types, (type I and II) posses a 9 amino acid cysteine box, with the the consensus CCX{4-5}CN. The ty ...	This Pfam entry consists of both TGF-beta receptor types. This is an alignment of the hydrophilic cysteine-rich ligand-binding domains, Both receptor types, (type I and II) posses a 9 amino acid cysteine box, with the the consensus CCX{4-5}CN. The type I receptors also possess 7 extracellular residues preceding the cysteine box.	Domain
D [auth K]	PF01064	Activin types I and II receptor domain (Activin_recp)	Activin types I and II receptor domain	This Pfam entry consists of both TGF-beta receptor types. This is an alignment of the hydrophilic cysteine-rich ligand-binding domains, Both receptor types, (type I and II) posses a 9 amino acid cysteine box, with the the consensus CCX{4-5}CN. The ty ...	This Pfam entry consists of both TGF-beta receptor types. This is an alignment of the hydrophilic cysteine-rich ligand-binding domains, Both receptor types, (type I and II) posses a 9 amino acid cysteine box, with the the consensus CCX{4-5}CN. The type I receptors also possess 7 extracellular residues preceding the cysteine box.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Inhibin beta A chain	molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity protein-containing complex binding binding peptide hormone binding hormone binding identical protein binding protein binding cytokine activity hormone activity molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity protein-containing complex binding binding peptide hormone binding hormone binding identical protein binding protein binding cytokine activity hormone activity activin receptor binding receptor serine/threonine kinase binding signaling receptor 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 sterol response to lipid response to alcohol 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 cholesterol response to cytokine cytokine-mediated signaling pathway response to peptide cellular response to cytokine stimulus olefinic compound biosynthetic process small molecule biosynthetic process ketone metabolic process steroid metabolic process lipid biosynthetic process primary metabolic process testosterone biosynthetic process biosynthetic process olefinic compound metabolic process metabolic process small molecule metabolic process steroid biosynthetic process ketone biosynthetic process lipid metabolic process regulation of hormone levels androgen metabolic process regulation of biological quality hormone metabolic process 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 regulation of biosynthetic 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 positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic 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 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 androst-4-ene-3,17-dione biosynthetic process 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 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 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 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 positive regulation of DNA-templated transcription RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription 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 epithelial cell differentiation Sertoli cell differentiation epithelium development tissue development 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 embryo development gastrulation endoderm development anatomical structure formation involved in morphogenesis endoderm formation endodermal cell differentiation 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 negative regulation of phosphorus metabolic process phosphate-containing compound 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 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 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 ovulation sexual reproduction regulation of reproductive process female gamete generation gamete generation regulation of ovulation positive regulation of ovulation positive regulation of reproductive process positive regulation of transcription by RNA polymerase III transcription by RNA polymerase III regulation of 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 peptide hormone cellular response to peptide hormone stimulus cellular response to angiotensin response to nitrogen 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 cellular anatomical structure extracellular region extracellular protein-containing complex intracellular anatomical structure perinuclear region of cytoplasm cytoplasm activin A complex activin complex
B [auth C]	Activin receptor type-2B	protein-containing complex binding activin binding binding enzyme regulator activity kinase activator activity enzyme activator activity molecular function activator activity molecular function regulator activity kinase regulator activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding protein-containing complex binding activin binding binding enzyme regulator activity kinase activator activity enzyme activator activity molecular function activator activity molecular function regulator activity kinase regulator activity 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 protein serine/threonine kinase activity molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity activin receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups transmembrane receptor protein serine/threonine kinase activity transmembrane receptor protein kinase activity transmembrane signaling receptor activity catalytic activity cation binding metal ion binding activin receptor activity, type II protein serine/threonine/tyrosine kinase activity protein binding growth factor binding	intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis developmental process multicellular organism development multicellular organismal process anatomical structure development intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis developmental process multicellular organism development multicellular organismal process anatomical structure development pattern specification process heart development animal organ development circulatory system development system development epithelium development endothelial cell differentiation cellular developmental process endothelium development lymphatic endothelial cell differentiation tissue development epithelial cell differentiation vasculature development cell differentiation cellular process lymph vessel development digestive system development foregut morphogenesis tube development embryonic morphogenesis embryo development digestive tract development anatomical structure morphogenesis tube morphogenesis embryonic foregut morphogenesis digestive tract morphogenesis mesoderm development artery development blood vessel development regulation of developmental process positive regulation of biological process regulation of biomineral tissue development regulation of bone mineralization positive regulation of ossification positive regulation of developmental process positive regulation of biomineral tissue development ossification biomineral tissue development regulation of multicellular organismal process regulation of multicellular organismal development regulation of biological process bone mineralization biological regulation positive regulation of bone mineralization positive regulation of multicellular organismal process regulation of ossification negative regulation of adipose tissue development connective tissue development adipose tissue development negative regulation of developmental process negative regulation of biological process regulation of adipose tissue development negative regulation of multicellular organismal process regulation of cellular process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process skeletal system development skeletal system morphogenesis animal organ morphogenesis cellular response to stimulus cell surface receptor protein serine/threonine kinase signaling pathway cell surface receptor signaling pathway response to stimulus signaling cell communication signal transduction enzyme-linked receptor protein signaling pathway negative regulation of RNA biosynthetic process transcription by RNA polymerase II negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process negative regulation of macromolecule metabolic process regulation of transcription by RNA polymerase II negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of RNA metabolic process kidney development renal system development establishment of protein localization nitrogen compound transport transport hormone secretion protein localization to extracellular region localization peptide secretion secretion by cell signal release regulation of biological quality intracellular protein localization secretion regulation of hormone levels establishment of protein localization to extracellular region cell-cell signaling export from cell protein secretion establishment of localization peptide transport protein transport peptide hormone secretion macromolecule localization hormone transport insulin secretion trophoblast cell migration multi-multicellular organism process reproductive process ameboidal-type cell migration cell migration cell motility female pregnancy embryo implantation multi-organism reproductive process positive regulation of activin receptor signaling pathway positive regulation of cell communication activin receptor signaling pathway positive regulation of signal transduction regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of signal transduction positive regulation of response to stimulus positive regulation of cellular process regulation of signaling positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of response to stimulus regulation of cell communication transforming growth factor beta receptor superfamily signaling pathway regulation of activin receptor signaling pathway positive regulation of signaling sensory organ development retina vasculature development in camera-type eye eye development retina development in camera-type eye visual system development camera-type eye development sensory system development cellular response to BMP stimulus cellular response to growth factor stimulus response to endogenous stimulus cellular response to endogenous stimulus response to BMP response to growth factor BMP signaling pathway gastrulation with mouth forming second gastrulation developmental growth growth organ growth odontogenesis of dentin-containing tooth odontogenesis lymphangiogenesis anatomical structure formation involved in morphogenesis lymph vessel morphogenesis respiratory tube development lung development respiratory system development response to hexose response to monosaccharide response to carbohydrate response to glucose response to chemical response to oxygen-containing compound determination of bilateral symmetry determination of left/right symmetry left/right pattern formation regionalization specification of symmetry pancreas development blood vessel remodeling tissue remodeling regulation of osteoblast differentiation regulation of cell differentiation osteoblast differentiation positive regulation of osteoblast differentiation positive regulation of cell differentiation venous blood vessel development negative regulation of cold-induced thermogenesis adaptive thermogenesis multicellular organismal-level homeostasis regulation of cold-induced thermogenesis cold-induced thermogenesis temperature homeostasis negative regulation of ossification post-embryonic development anterior/posterior pattern specification roof of mouth development	cellular anatomical structure intracellular anatomical structure cytoplasm protein-containing complex signaling receptor complex catalytic complex plasma membrane protein complex membrane plasma membrane membrane protein complex transferase complex protein kinase complex transferase complex, transferring phosphorus-containing groups cell periphery cellular anatomical structure intracellular anatomical structure cytoplasm protein-containing complex signaling receptor complex catalytic complex plasma membrane protein complex membrane plasma membrane membrane protein complex transferase complex protein kinase complex transferase complex, transferring phosphorus-containing groups cell periphery serine/threonine protein kinase complex plasma membrane signaling receptor complex activin receptor complex
C [auth H]	Fab heavy chain	-	-	-
D [auth K]	Activin receptor type-1B	protein-containing complex binding activin binding binding protein binding inhibin 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 protein-containing complex binding activin binding binding protein binding inhibin 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 protein serine/threonine kinase activity molecular transducer activity catalytic activity, acting on a protein kinase activity protein kinase activity signaling receptor activity activin receptor activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups transmembrane receptor protein serine/threonine kinase activity transmembrane receptor protein kinase activity transmembrane signaling receptor activity catalytic activity SMAD binding I-SMAD binding ubiquitin protein ligase binding ubiquitin-like protein ligase binding enzyme binding activin receptor activity, type I cation binding metal ion binding	cellular response to stimulus regulation of biological process activin receptor signaling pathway cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cell communication nodal signaling pathway cellular process transforming growth factor beta receptor superfamily signaling pathway signal transduction cellular response to stimulus regulation of biological process activin receptor signaling pathway cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cell communication nodal signaling pathway cellular process transforming growth factor beta receptor superfamily signaling pathway signal transduction enzyme-linked receptor protein signaling pathway 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 developmental process multicellular organismal process epithelium development epidermis development molting cycle process hair cycle animal organ development tissue development skin development skin epidermis development hair follicle development molting cycle anatomical structure development hair cycle process regulation of growth regulation of cellular component organization negative regulation of biological process growth negative regulation of cell growth regulation of cell growth cell growth cellular component organization negative regulation of growth negative regulation of cellular process cellular component organization or biogenesis cell death extrinsic apoptotic signaling pathway apoptotic signaling pathway apoptotic process programmed cell death protein phosphorylation phosphorylation primary metabolic process macromolecule modification peptidyl-amino acid modification phosphate-containing compound metabolic process peptidyl-threonine modification protein metabolic process protein modification process phosphorus metabolic process peptidyl-threonine phosphorylation multicellular organism development embryo development ending in birth or egg hatching chordate embryonic development embryo development in utero embryonic development protein autophosphorylation RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process regulation of DNA-templated transcription cellular developmental process regulation of developmental process homeostatic process cell development regulation of cell differentiation regulation of cell development positive regulation of developmental process positive regulation of cell differentiation cell differentiation regulation of immune system process regulation of multicellular organismal process myeloid cell homeostasis erythrocyte homeostasis regulation of multicellular organismal development hemopoiesis regulation of myeloid cell differentiation erythrocyte differentiation regulation of erythrocyte differentiation positive regulation of erythrocyte differentiation multicellular organismal-level homeostasis myeloid cell differentiation immune system process positive regulation of myeloid cell differentiation regulation of hemopoiesis homeostasis of number of cells cellular response to endogenous stimulus cellular response to growth factor stimulus response to endogenous stimulus response to growth factor nervous system development system development mitotic cell cycle process cell cycle phase transition cell cycle G1/S transition of mitotic cell cycle cell cycle G1/S phase transition mitotic cell cycle mitotic cell cycle phase transition cell cycle process multi-multicellular organism process positive regulation of locomotion regulation of cell motility regulation of trophoblast cell migration regulation of reproductive process reproductive process positive regulation of cell migration ameboidal-type cell migration positive regulation of cell motility regulation of cell migration cell migration cell motility female pregnancy embryo implantation locomotion positive regulation of reproductive process trophoblast cell migration positive regulation of trophoblast cell migration regulation of locomotion positive regulation of multicellular organismal process multi-organism reproductive process negative regulation of developmental process negative regulation of cell differentiation negative regulation of metabolic process negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of macromolecule metabolic process ossification negative regulation of multicellular organismal process regulation of ossification negative regulation of ossification positive regulation of activin receptor signaling pathway positive regulation of cell communication positive regulation of signal transduction regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of signal transduction positive regulation of response to stimulus regulation of signaling positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of response to stimulus regulation of cell communication regulation of activin receptor signaling pathway positive regulation of signaling	cell surface cellular anatomical structure cell periphery plasma membrane membrane protein-containing complex signaling receptor complex catalytic complex plasma membrane protein complex membrane protein complex transferase complex protein kinase complex transferase complex, transferring phosphorus-containing groups serine/threonine protein kinase complex cell surface cellular anatomical structure cell periphery plasma membrane membrane protein-containing complex signaling receptor complex catalytic complex plasma membrane protein complex membrane protein complex transferase complex protein kinase complex transferase complex, transferring phosphorus-containing groups serine/threonine protein kinase complex plasma membrane signaling receptor complex activin receptor complex
E [auth L]	Fab light chain	-	-	-

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	IPR015615	Transforming growth factor-beta-like	Family
A	IPR001839	Transforming growth factor-beta, C-terminal	Domain
A	IPR000491	Inhibin, beta A subunit	Family
A	IPR001111	TGF-beta, propeptide	Domain
B [auth C]	IPR000472	Activin types I and II receptor domain	Domain
B [auth C]	IPR000719	Protein kinase domain	Domain
B [auth C]	IPR000333	Ser/Thr protein kinase, TGFB receptor	Family
B [auth C]	IPR045860	Snake toxin-like superfamily	Homologous Superfamily
B [auth C]	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
B [auth C]	IPR008271	Serine/threonine-protein kinase, active site	Active Site
D [auth K]	IPR000472	Activin types I and II receptor domain	Domain
D [auth K]	IPR017441	Protein kinase, ATP binding site	Binding Site
D [auth K]	IPR045860	Snake toxin-like superfamily	Homologous Superfamily
D [auth K]	IPR000719	Protein kinase domain	Domain
D [auth K]	IPR003605	GS domain	Domain
D [auth K]	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
D [auth K]	IPR008271	Serine/threonine-protein kinase, active site	Active Site
D [auth K]	IPR000333	Ser/Thr protein kinase, TGFB receptor	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: 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
B [auth C]	: Q13705	visceral heterotaxy situs inversus heterotaxy, visceral, 4, autosomal right atrial isomerism subependymal giant cell astrocytoma Asplenia Syndrome interstitial cystitis lung cancer osteosarcoma primitive neuroectodermal tumor situs ambiguus atrial fibrillation large cell medulloblastoma malignant mesothelioma Pick disease visceral heterotaxy situs inversus heterotaxy, visceral, 4, autosomal right atrial isomerism subependymal giant cell astrocytoma Asplenia Syndrome interstitial cystitis lung cancer osteosarcoma primitive neuroectodermal tumor situs ambiguus atrial fibrillation large cell medulloblastoma malignant mesothelioma Pick disease atypical teratoid rhabdoid tumor medulloblastoma
D [auth K]	: P36896	astrocytic tumor glioblastoma lung carcinoma osteosarcoma ulcerative colitis atypical teratoid rhabdoid tumor interstitial cystitis malignant glioma ovarian cancer familial pancreatic carcinoma lung adenocarcinoma malignant mesothelioma psoriasis