3SEK | pdb_00003sek

Crystal Structure of the Myostatin:Follistatin-like 3 Complex

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 [auth B]	d3sekb_	Small proteins	Cystine-knot cytokines	Cystine-knot cytokines	automated matches	automated matches	mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth C]	SCOP2B Superfamily	Kazal-type serine protease inhibitors	8068431	3000605	SCOP2B (2022-06-29)
A [auth B]	SCOP2B Superfamily	Cystine-knot cytokines	8070307	3000846	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)
B [auth C]	PI3_PI4_kinase	e3sekC1	A: a/b three-layered sandwiches	X: Transmembrane heme-binding four-helical bundle	H: Anticodon-binding domain of Class II aaRS	T: Anticodon-binding domain of Class II aaRS	F: PI3_PI4_kinase	ECOD (v294.1)
A [auth B]	PYRIN	e3sekB1	A: a/b three-layered sandwiches	X: Baculovirus p35 protein-related	H: Bet v1-like	T: Bet v1-like	F: PYRIN	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth C]	3.90.290.10	Alpha Beta	Alpha-Beta Complex	Extracellular Matrix Fibrillin	TGF-beta binding (TB) domain	CATH (4.3.0)
B [auth C]	3.30.60.30	Alpha Beta	2-Layer Sandwich	Wheat Germ Agglutinin (Isolectin 2)	domain 1	CATH (4.3.0)
A [auth B]	2.10.90.10	Mainly Beta	Ribbon	Cystine Knot Cytokines, subunit B	Cystine-knot cytokines	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth C]	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 C]	PF21333	Follistatin, N-terminal (FST_N)	Follistatin, N-terminal	Follistatin (FST) is required for normal embryonic and ovarian follicle development. It regulates transforming growth factor-beta superfamily ligands, being described as a ligand antagonist. It consists of a N-terminal domain with a modified TB fold ...	Follistatin (FST) is required for normal embryonic and ovarian follicle development. It regulates transforming growth factor-beta superfamily ligands, being described as a ligand antagonist. It consists of a N-terminal domain with a modified TB fold and three follistatin domains (FSD1-3) each of which is subdivided in EGF-like and Kazal-like subdomains [1-4]. This domain is important for ligand specificity.	Domain
B [auth C]	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
A [auth B]	PF00019	Transforming growth factor beta like domain (TGF_beta)	Transforming growth factor beta like domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth C]	Follistatin-related protein 3	protein-containing complex binding activin binding binding protein binding fibronectin binding	developmental process cellular developmental process cell differentiation cellular process cellular response to stimulus activin receptor signaling pathway cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process response to stimulus signaling negative regulation of signaling regulation of transmembrane receptor protein serine/threonine kinase signaling pathway negative regulation of biological process regulation of signal transduction developmental process cellular developmental process cell differentiation cellular process cellular response to stimulus activin receptor signaling pathway cell surface receptor protein serine/threonine kinase signaling pathway regulation of cellular process response to stimulus signaling 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 cell communication negative regulation of activin receptor signaling pathway negative regulation of cellular process signal transduction enzyme-linked receptor protein signaling pathway regulation of biological process regulation of signaling cell surface receptor signaling pathway negative regulation of response to stimulus biological regulation negative regulation of signal transduction regulation of response to stimulus regulation of cell communication transforming growth factor beta receptor superfamily signaling pathway regulation of activin receptor signaling pathway negative regulation of transmembrane receptor protein serine/threonine kinase signaling pathway positive regulation of cell adhesion regulation of cell adhesion positive regulation of biological process positive regulation of cell-cell adhesion cell adhesion cell-cell adhesion regulation of cell-cell adhesion positive regulation of cellular process cellular response to growth factor stimulus negative regulation of cellular response to growth factor stimulus negative regulation of BMP signaling pathway cellular response to endogenous stimulus BMP signaling pathway cellular response to BMP stimulus regulation of BMP signaling pathway response to endogenous stimulus regulation of cellular response to growth factor stimulus response to BMP response to growth factor myeloid leukocyte differentiation regulation of leukocyte differentiation multicellular organismal process regulation of developmental process cell development regulation of cell differentiation regulation of cell development regulation of osteoclast differentiation multicellular organism development osteoclast differentiation anatomical structure development regulation of immune system process regulation of multicellular organismal process negative regulation of cell 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 regulation of myeloid leukocyte differentiation negative regulation of myeloid cell differentiation negative regulation of osteoclast 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 ossification 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 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 hematopoietic progenitor cell differentiation positive regulation of DNA-templated transcription positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure nucleoplasm organelle lumen organelle nuclear lumen endomembrane system endoplasmic reticulum lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure nucleoplasm organelle lumen organelle nuclear lumen endomembrane system endoplasmic reticulum lumen endoplasmic reticulum cytoplasm extracellular region extracellular space
A [auth B]	Growth/differentiation factor 8	protein binding binding signaling receptor binding molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity identical protein binding protein homodimerization activity protein dimerization activity cytokine activity enzyme regulator activity protein binding binding signaling receptor binding molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity identical protein binding protein homodimerization activity protein dimerization activity cytokine activity enzyme regulator activity protein serine/threonine kinase activator activity kinase activator activity enzyme activator activity protein kinase activator activity protein kinase regulator activity kinase regulator activity heparin binding glycosaminoglycan binding carbohydrate derivative binding sulfur compound binding	response to stimulus response to activity response to muscle activity muscle hypertrophy multicellular organismal process regulation of biological process system process negative regulation of muscle hypertrophy regulation of system process negative regulation of biological process biological regulation regulation of muscle system process muscle system process regulation of muscle hypertrophy response to stimulus response to activity response to muscle activity muscle hypertrophy multicellular organismal process regulation of biological process system process negative regulation of muscle hypertrophy regulation of system process negative regulation of biological process biological regulation regulation of muscle system process muscle system process regulation of muscle hypertrophy regulation of multicellular organismal process negative regulation of multicellular organismal process response to hormone response to endogenous stimulus response to chemical response to estrogen skeletal muscle cell differentiation developmental process cellular developmental process skeletal muscle tissue development animal organ development tissue development striated muscle tissue development muscle structure development skeletal muscle organ development cell differentiation anatomical structure development cellular process muscle tissue development muscle organ development skeletal muscle satellite cell differentiation regulation of cellular process regulation of developmental process regulation of cell differentiation regulation of skeletal muscle cell differentiation negative regulation of cellular process negative regulation of skeletal muscle cell differentiation negative regulation of cell differentiation negative regulation of developmental process negative regulation of satellite cell differentiation response to ketone response to lipid response to oxygen-containing compound response to testosterone response to decreased oxygen levels cellular response to stimulus cellular response to oxygen levels cellular response to hypoxia cellular response to decreased oxygen levels cellular response to chemical stimulus cellular response to stress response to hypoxia response to stress response to oxygen levels response to abiotic stimulus negative regulation of myoblast differentiation regulation of myoblast differentiation myoblast differentiation muscle atrophy striated muscle adaptation skeletal muscle atrophy muscle adaptation skeletal muscle adaptation striated muscle atrophy negative regulation of cell population proliferation cell population proliferation negative regulation of skeletal muscle satellite cell proliferation negative regulation of skeletal muscle cell proliferation skeletal muscle satellite cell proliferation regulation of cell population proliferation muscle cell proliferation regulation of skeletal muscle satellite cell proliferation skeletal muscle cell proliferation regulation of skeletal muscle cell proliferation striated muscle cell proliferation regulation of growth developmental growth negative regulation of growth regulation of skeletal muscle tissue growth regulation of developmental growth growth negative regulation of developmental growth skeletal muscle tissue growth negative regulation of skeletal muscle tissue growth cellular response to endogenous stimulus response to steroid hormone cellular response to ketone cellular response to steroid hormone stimulus cellular response to hormone stimulus cellular response to dexamethasone stimulus response to glucocorticoid cellular response to glucocorticoid stimulus cellular response to oxygen-containing compound cellular response to corticosteroid stimulus response to corticosteroid cellular response to lipid response to dexamethasone cellular response to nitrogen compound negative regulation of signaling signaling response to peptide hormone regulation of signal transduction insulin receptor signaling pathway regulation of cellular response to insulin stimulus negative regulation of cell communication cell surface receptor protein tyrosine kinase signaling pathway cell communication signal transduction enzyme-linked receptor protein signaling pathway regulation of signaling cell surface receptor signaling pathway negative regulation of response to stimulus regulation of insulin receptor signaling pathway cellular response to peptide hormone stimulus response to nitrogen compound negative regulation of signal transduction negative regulation of cellular response to insulin stimulus regulation of response to stimulus negative regulation of insulin receptor signaling pathway response to insulin regulation of cell communication cellular response to insulin stimulus regulation of catalytic activity negative regulation of catalytic activity negative regulation of phosphate metabolic process regulation of transferase activity negative regulation of kinase activity phosphate-containing compound metabolic process phosphorus metabolic process phosphorylation negative regulation of metabolic process negative regulation of molecular function regulation of molecular function regulation of kinase activity negative regulation of phosphorus metabolic process regulation of phosphorylation regulation of phosphorus metabolic process metabolic process negative regulation of phosphorylation regulation of metabolic process response to alcohol response to ethanol positive regulation of locomotion regulation of cell motility macrophage migration positive regulation of chemotaxis positive regulation of cell migration taxis cell migration regulation of immune system process regulation of mononuclear cell migration positive regulation of immune system process chemotaxis regulation of leukocyte chemotaxis regulation of leukocyte migration positive regulation of macrophage migration response to external stimulus positive regulation of leukocyte chemotaxis granulocyte migration leukocyte migration regulation of locomotion regulation of response to external stimulus macrophage chemotaxis positive regulation of biological process positive regulation of response to stimulus regulation of granulocyte chemotaxis regulation of macrophage migration positive regulation of response to external stimulus positive regulation of cell motility regulation of cell migration myeloid leukocyte migration positive regulation of mononuclear cell migration cell motility locomotion positive regulation of cellular process cell chemotaxis regulation of macrophage chemotaxis positive regulation of leukocyte migration regulation of chemotaxis immune system process granulocyte chemotaxis mononuclear cell migration positive regulation of macrophage chemotaxis leukocyte chemotaxis response to electrical stimulus regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction negative regulation of intracellular signal transduction negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction intracellular signal transduction regulation of intracellular signal transduction intracellular signaling cassette phosphatidylinositol 3-kinase/protein kinase B signal transduction positive regulation of DNA-templated transcription RNA metabolic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process regulation of gene expression biosynthetic process positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription tissue regeneration skeletal muscle tissue regeneration regeneration myoblast proliferation regulation of myoblast proliferation negative regulation of myoblast proliferation rhythmic process ovulation cycle ovulation cycle process reproductive process multicellular organismal reproductive process response to gravity regulation of cellular component organization positive regulation of cellular component organization cell projection organization plasma membrane bounded cell projection assembly cellular component biogenesis cellular component organization cellular component assembly regulation of lamellipodium assembly regulation of lamellipodium organization positive regulation of cell projection organization cellular component organization or biogenesis lamellipodium assembly plasma membrane bounded cell projection organization positive regulation of cellular component biogenesis regulation of cell projection organization regulation of cell projection assembly positive regulation of lamellipodium assembly regulation of cellular component biogenesis positive regulation of lamellipodium organization regulation of plasma membrane bounded cell projection assembly lamellipodium organization cell projection assembly regulation of plasma membrane bounded cell projection organization positive regulation of plasma membrane bounded cell projection assembly cellular response to growth factor stimulus cell surface receptor protein serine/threonine kinase signaling pathway cellular response to transforming growth factor beta stimulus response to transforming growth factor beta transforming growth factor beta receptor signaling pathway response to growth factor transforming growth factor beta receptor superfamily signaling pathway trophoblast cell migration multi-multicellular organism process multicellular organism development ameboidal-type cell migration female pregnancy embryo implantation multi-organism reproductive process cellular homeostasis homeostatic process muscle cell cellular homeostasis myoblast migration involved in skeletal muscle regeneration muscle cell migration myoblast migration	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth C]	IPR015369	Follistatin/Osteonectin EGF domain	Domain
B [auth C]	IPR036058	Kazal domain superfamily	Homologous Superfamily
B [auth C]	IPR002350	Kazal domain	Domain
B [auth C]	IPR003645	Follistatin-like, N-terminal	Domain
B [auth C]	IPR036773	TGF-beta binding (TB) domain superfamily	Homologous Superfamily
B [auth C]	IPR050653	Protease Inhibitors and Growth Factor Antagonists	Family
B [auth C]	IPR017878	TB domain	Domain
A [auth B]	IPR029034	Cystine-knot cytokine	Homologous Superfamily
A [auth B]	IPR017948	Transforming growth factor beta, conserved site	Conserved Site
A [auth B]	IPR015615	Transforming growth factor-beta-like	Family
A [auth B]	IPR001111	TGF-beta, propeptide	Domain
A [auth B]	IPR001839	Transforming growth factor-beta, C-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B [auth C]	Pharos: O95633	adrenal cortex carcinoma lung adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia cancer lung carcinoma invasive ductal breast carcinoma non-small cell lung carcinoma

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.