The Structure of the Follistatin:Activin 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) |
|---|---|---|---|---|---|---|---|---|
| B | d2b0ub_ | 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 | d2b0ua_ | 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 | Sigma_1_2 | e2b0uD1 | A: a/b three-layered sandwiches | X: HTH | H: Nudix | T: winged helix domain | F: Sigma_1_2 | ECOD (v294.1) |
| D | Cobalamin_bind | e2b0uD4 | A: a/b three-layered sandwiches | X: RuvA-C | H: post-HMGL domain-like | T: post-HMGL domain-like | F: Cobalamin_bind | ECOD (v294.1) |
| C | Sigma_1_2 | e2b0uC1 | A: a/b three-layered sandwiches | X: HTH | H: Nudix | T: winged helix domain | F: Sigma_1_2 | ECOD (v294.1) |
| C | Cobalamin_bind | e2b0uC4 | A: a/b three-layered sandwiches | X: RuvA-C | H: post-HMGL domain-like | T: post-HMGL domain-like | F: Cobalamin_bind | ECOD (v294.1) |
| B | zf-C2H2 | e2b0uB1 | A: a/b three-layered sandwiches | X: EGF-like | H: EGF-related | T: EGF/Laminin | F: zf-C2H2 | ECOD (v294.1) |
| A | zf-C2H2 | e2b0uA1 | 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 | 3.90.290.10 | Alpha Beta | Alpha-Beta Complex | Extracellular Matrix Fibrillin | TGF-beta binding (TB) domain | CATH (4.3.0) |
| D | 3.30.60.30 | Alpha Beta | 2-Layer Sandwich | Wheat Germ Agglutinin (Isolectin 2) | domain 1 | CATH (4.3.0) |
| C | 3.90.290.10 | Alpha Beta | Alpha-Beta Complex | Extracellular Matrix Fibrillin | TGF-beta binding (TB) domain | CATH (4.3.0) |
| C | 3.30.60.30 | Alpha Beta | 2-Layer Sandwich | Wheat Germ Agglutinin (Isolectin 2) | domain 1 | CATH (4.3.0) |
| 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 |
|---|---|---|---|---|---|
| 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 | |
| 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 | |
| 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 | |
| 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 |
|---|---|---|---|
| IPR015369 | Follistatin/Osteonectin EGF domain | Domain | |
| IPR036058 | Kazal domain superfamily | Homologous Superfamily | |
| IPR002350 | Kazal domain | Domain | |
| IPR003645 | Follistatin-like, N-terminal | Domain | |
| IPR036773 | TGF-beta binding (TB) domain superfamily | Homologous Superfamily | |
| IPR050653 | Protease Inhibitors and Growth Factor Antagonists | Family | |
| IPR017878 | TB domain | Domain | |
| IPR029034 | Cystine-knot cytokine | Homologous Superfamily | |
| IPR017948 | Transforming growth factor beta, conserved site | Conserved Site | |
| IPR015615 | Transforming growth factor-beta-like | Family | |
| IPR001839 | Transforming growth factor-beta, C-terminal | Domain | |
| IPR000491 | Inhibin, beta A subunit | Family | |
| IPR001111 | TGF-beta, propeptide | Domain |














