Fab structure of rabbit monoclonal antibody R53 targeting an epitope in HIV-1 gp120 C4 region
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| B [auth H] | d4ztph_ | All beta proteins | Immunoglobulin-like beta-sandwich | Immunoglobulin | automated matches | automated matches | (Oryctolagus cuniculus ) [TaxId: 9986 ], | SCOPe (2.08) |
| A [auth L] | d4ztpl1 | All beta proteins | Immunoglobulin-like beta-sandwich | Immunoglobulin | automated matches | automated matches | (Oryctolagus cuniculus ) [TaxId: 9986 ], | SCOPe (2.08) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| B [auth H] | SSL_OB | e4ztpH2 | A: beta barrels | X: Sigma2 domain-like | H: Bacterial enterotoxins | T: Bacterial enterotoxins | F: SSL_OB | ECOD (v294.2) |
| B [auth H] | EF-hand_1, EF-hand_6, EF-hand_7 | e4ztpH3 | A: beta barrels | X: Lipocalins/Streptavidin | H: SAM/DNA-glycosylase | T: SAM domain-like | F: EF-hand_1, EF-hand_6, EF-hand_7 | ECOD (v294.2) |
| A [auth L] | SSL_OB | e4ztpL1 | A: beta barrels | X: Sigma2 domain-like | H: Bacterial enterotoxins | T: Bacterial enterotoxins | F: SSL_OB | ECOD (v294.2) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| B [auth H] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (4.3.0) |
| A [auth L] | 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 |
|---|---|---|---|---|---|---|---|---|
| B [auth H] | R53 Fab | VH-CH1 | Oryctolagus cuniculus (rabbit) | IGHV1S40*01, IGHJ6*01, IGHG*01, IGHG*05, IGHG*02 | V-DOMAIN VH, C-DOMAIN CH1 | IG | FAB-GAMMA-KAPPA | IMGT (202617-0) |
| A [auth L] | R53 Fab | L-KAPPA | Oryctolagus cuniculus (rabbit) | IGKV1S3*01, IGKJ1-2*02, IGKJ1-2*01, IGKC1*01 | V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA | IG | FAB-GAMMA-KAPPA | IMGT (202617-0) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| B [auth H] | Heavy Chain | IGHV1 | - | - | SAbDab (2026-05-08) |
| A [auth L] | Light Chain | IGKV1 | Kappa | - | SAbDab (2026-05-08) |














