Crystal structure of FM329, a recombinant Fab adopted from cetuximab
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| D | Ig_3 | e5gz0D1 | A: beta barrels | X: Trefoil/Plexin domain-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Ig_3 | ECOD (v294.2) |
| B | Ig_3 | e5gz0B1 | A: beta barrels | X: Trefoil/Plexin domain-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Ig_3 | ECOD (v294.2) |
| C | Ig_3 | e5gz0C1 | A: beta barrels | X: Trefoil/Plexin domain-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Ig_3 | ECOD (v294.2) |
| A | Ig_3 | e5gz0A1 | A: beta barrels | X: Trefoil/Plexin domain-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Ig_3 | ECOD (v294.2) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| D | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (4.3.0) |
| B | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (4.3.0) |
| C | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (4.3.0) |
| A | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (4.3.0) |
IMGT Antibody Annotation IMGT Database Homepage
| Chain | Protein Name | Description | Organism Name | Gene Allele Name(s) | Domain Name(s) | Receptor Type | Receptor Description | Provenance Source |
|---|---|---|---|---|---|---|---|---|
| Fab FM329 | VH-CH1 | Homo sapiens (human) | IGHV2-2*03, IGHJ3*01, IGHG1*03 | V-DOMAIN VH, C-DOMAIN CH1 | IG | FAB-GAMMA-1_KAPPA | IMGT (202617-0) | |
| Fab FM329 | L-KAPPA | Homo sapiens (human) | IGKV5-48*01, IGKJ5*01, IGKC*01 | V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA | IG | FAB-GAMMA-1_KAPPA | IMGT (202617-0) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| Heavy Chain | IGHV2 | - | - | SAbDab (2026-05-08) | |
| Light Chain | IGKV5 | Kappa | - | SAbDab (2026-05-08) |
Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage
| Chain | Name | Target | Provenance Source |
|---|---|---|---|
| Ficerafusp | EGFR/ERBB1/HER1, ERBB3/HER3 | Therapeutic SAbDab (2026-05-08) | |
| Ficerafusp | EGFR/ERBB1/HER1, ERBB3/HER3 | Therapeutic SAbDab (2026-05-08) |














