Crystal structure of the Fab fragment of anti-CD20 antibody Ofatumumab
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A [auth L] | d3gizl2 | All beta proteins | Immunoglobulin-like beta-sandwich | Immunoglobulin | C1 set domains (antibody constant domain-like) | automated matches | human (Homo sapiens ) [TaxId: 9606 ], | SCOPe (2.08) |
| A [auth L] | d3gizl1 | All beta proteins | Immunoglobulin-like beta-sandwich | Immunoglobulin | automated matches | automated matches | human (Homo sapiens ) [TaxId: 9606 ], | SCOPe (2.08) |
| B [auth H] | d3gizh_ | All beta proteins | Immunoglobulin-like beta-sandwich | Immunoglobulin | V set domains (antibody variable domain-like) | automated matches | human (Homo sapiens ) [TaxId: 9606 ], | SCOPe (2.08) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A [auth L] | e3gizL1 | A: HTH | X: HTH | H: tetra-helical, lambda repressor-like | T: Ras | F: | ECOD (20:10:01) | |
| B [auth H] | e3gizH1 | A: Alpha-beta plaits | X: Nucleotide-diphospho-sugar transferases | H: Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase | T: TetR_N | F: | ECOD (20:10:01) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| A [auth L] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (4.3.0) |
| B [auth H] | 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 |
|---|---|---|---|---|---|---|---|---|
| A [auth L] | Human 2F2 neutralizing mAb, anti-CD20 | L-KAPPA | Homo sapiens (human) | IGKV3-11*01, IGKJ5*01, IGKC*01 | V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA | IG | FAB-GAMMA-1_KAPPA | IMGT (202609-0) |
| B [auth H] | Human 2F2 neutralizing mAb, anti-CD20 | VH-CH1 | Homo sapiens (human) | IGHV3-9*01, IGHJ6*01, IGHJ6*02, IGHG1*01, IGHG1*02, IGHG1*04 | V-DOMAIN VH, C-DOMAIN CH1 | IG | FAB-GAMMA-1_KAPPA | IMGT (202609-0) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| A [auth L] | Light Chain | IGKV3 | Kappa | - | SAbDab (2026-03-13) |
| B [auth H] | Heavy Chain | IGHV3 | - | - | SAbDab (2026-03-13) |
Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage
| Chain | Name | Target | Provenance Source |
|---|---|---|---|
| A [auth L] | Ofatumumab | MS4A1/CD20 | Therapeutic SAbDab (2026-03-13) |
| B [auth H] | Ofatumumab | MS4A1/CD20 | Therapeutic SAbDab (2026-03-13) |














