Frizzled 2 CRD in complex with pF7_A5 Fab
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) | 
|---|---|---|---|---|---|---|---|---|
| F | C1-set_1 | e7x8pF2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: C1-set_1 | ECOD (1.6) | 
| F | V-set_12 | e7x8pF1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_12 | ECOD (1.6) | 
| C | C1-set_1 | e7x8pC2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: C1-set_1 | ECOD (1.6) | 
| C | V-set_12 | e7x8pC1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_12 | ECOD (1.6) | 
| E | C1-set | e7x8pE2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: C1-set | ECOD (1.6) | 
| E | V-set_3 | e7x8pE1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_3 | ECOD (1.6) | 
| B | C1-set | e7x8pB1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: C1-set | ECOD (1.6) | 
| B | V-set_3 | e7x8pB2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_3 | ECOD (1.6) | 
| D | Fz | e7x8pD1 | A: few secondary structure elements | X: Frizzled cysteine-rich domain-related (From Topology) | H: Frizzled cysteine-rich domain-related (From Topology) | T: Frizzled cysteine-rich domain-related | F: Fz | ECOD (1.6) | 
| A | Fz | e7x8pA1 | A: few secondary structure elements | X: Frizzled cysteine-rich domain-related (From Topology) | H: Frizzled cysteine-rich domain-related (From Topology) | T: Frizzled cysteine-rich domain-related | F: Fz | ECOD (1.6) | 
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) | 
|---|---|---|---|---|---|---|
| F | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) | 
| C | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) | 
| E | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) | 
| B | 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 | 
|---|---|---|---|---|---|
| Heavy Chain | IGHV3 | - | frizzled-2 | SAbDab (2025-10-24) | |
| Light Chain | IGLV3 | Lambda | frizzled-2 | SAbDab (2025-10-24) | 
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source | 
|---|---|---|---|---|---|
| PF01392 | Fz domain (Fz) | Fz domain | Also known as the CRD (cysteine rich domain), the C6 box in MuSK receptor. This domain of unknown function has been independently identified by several groups [1,2,3,4]. The domain contains 10 conserved cysteines. | Domain | 
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type | 
|---|---|---|---|
| IPR036790 | Frizzled cysteine-rich domain superfamily | Homologous Superfamily | |
| IPR041778 | Frizzled 2, cysteine-rich domain | Domain | |
| IPR017981 | GPCR, family 2-like, 7TM | Domain | |
| IPR015526 | Frizzled/secreted frizzled-related protein | Family | |
| IPR000539 | Frizzled/Smoothened, 7TM | Domain | |
| IPR020067 | Frizzled domain | Domain | 














