The structure of the Activin:Follistatin 315 complex
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| C [auth B] | d2p6ab1 | 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) |
| A | d2p6aa1 | 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
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| D [auth C] | HTHP | e2p6aC1 | A: a/b three-layered sandwiches | X: HTH | H: Nudix | T: Nudix | F: HTHP | ECOD (v294.1) |
| B [auth D] | Kazal_2 | e2p6aD1 | A: a/b three-layered sandwiches | X: Kazal-type serine protease inhibitors-like | H: Kazal-type serine protease inhibitors | T: Kazal-type serine protease inhibitors | F: Kazal_2 | ECOD (v294.1) |
| C [auth B] | zf-C2H2 | e2p6aB1 | A: a/b three-layered sandwiches | X: EGF-like | H: EGF-related | T: EGF/Laminin | F: zf-C2H2 | ECOD (v294.1) |
| A | zf-C2H2 | e2p6aA1 | A: a/b three-layered sandwiches | X: EGF-like | H: EGF-related | T: EGF/Laminin | F: zf-C2H2 | ECOD (v294.1) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| D [auth C] | 3.90.290.10 | Alpha Beta | Alpha-Beta Complex | Extracellular Matrix Fibrillin | TGF-beta binding (TB) domain | CATH (4.3.0) |
| D [auth C] | 3.30.60.30 | Alpha Beta | 2-Layer Sandwich | Wheat Germ Agglutinin (Isolectin 2) | domain 1 | CATH (4.3.0) |
| B [auth D] | 3.90.290.10 | Alpha Beta | Alpha-Beta Complex | Extracellular Matrix Fibrillin | TGF-beta binding (TB) domain | CATH (4.3.0) |
| B [auth D] | 3.30.60.30 | Alpha Beta | 2-Layer Sandwich | Wheat Germ Agglutinin (Isolectin 2) | domain 1 | CATH (4.3.0) |
| C [auth B] | 2.10.90.10 | Mainly Beta | Ribbon | Cystine Knot Cytokines, subunit B | Cystine-knot cytokines | CATH (4.3.0) |
| A | 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 D], D [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 D], D [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 ... | Domain |
| B [auth D], D [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 ... | Domain |
| A, C [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
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| B [auth D], D [auth C] | IPR015369 | Follistatin/Osteonectin EGF domain | Domain |
| B [auth D], D [auth C] | IPR036058 | Kazal domain superfamily | Homologous Superfamily |
| B [auth D], D [auth C] | IPR002350 | Kazal domain | Domain |
| B [auth D], D [auth C] | IPR003645 | Follistatin-like, N-terminal | Domain |
| B [auth D], D [auth C] | IPR036773 | TGF-beta binding (TB) domain superfamily | Homologous Superfamily |
| B [auth D], D [auth C] | IPR050653 | Protease Inhibitors and Growth Factor Antagonists | Family |
| B [auth D], D [auth C] | IPR017878 | TB domain | Domain |
| A, C [auth B] | IPR029034 | Cystine-knot cytokine | Homologous Superfamily |
| A, C [auth B] | IPR017948 | Transforming growth factor beta, conserved site | Conserved Site |
| A, C [auth B] | IPR015615 | Transforming growth factor-beta-like | Family |
| A, C [auth B] | IPR001839 | Transforming growth factor-beta, C-terminal | Domain |
| A, C [auth B] | IPR000491 | Inhibin, beta A subunit | Family |
| A, C [auth B] | IPR001111 | TGF-beta, propeptide | Domain |














