crystal structure of the cluster II Fab 1281 in complex with HIV-1 gp41 ectodomain
External Resource: Annotation
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A | RNA_pol_Rpb1_5 | e3p30A1 | A: a/b three-layered sandwiches | X: TIM beta/alpha-barrel | H: TIM barrels | T: TIM barrels | F: RNA_pol_Rpb1_5 | ECOD (v294.1) |
| B [auth L] | tRNA_int_endo | e3p30L1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: tRNA_int_endo | ECOD (v294.1) |
| C [auth H] | tRNA_int_endo | e3p30H1 | A: a/b three-layered sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: tRNA_int_endo | ECOD (v294.1) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| A | 1.10.287.210 | Mainly Alpha | Orthogonal Bundle | Helix Hairpins | CATH (4.3.0) | |
| B [auth L] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (4.3.0) |
| C [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 |
|---|---|---|---|---|---|---|---|---|
| B [auth L] | Fab 1281 | L-LAMBDA | Homo sapiens (human) | IGLV1-47*01, IGLV1-47*02, IGLJ2*01, IGLJ3*01, IGLC2*01, IGLC2*02, IGLC3*04 | V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA | IG | FAB-GAMMA-1_LAMBDA | IMGT (202615-0) |
| C [auth H] | Fab 1281 | VH-CH1 | Homo sapiens (human) | IGHV1-69*01, IGHV1-69*06, IGHV1-69*10, IGHV1-69*12, IGHV1-69*13, IGHV1-69*14, IGHV1-69D*01, IGHJ5*02, IGHG1*01, IGHG1*02, IGHG1*04 | V-DOMAIN VH, C-DOMAIN CH1 | IG | FAB-GAMMA-1_LAMBDA | IMGT (202615-0) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| B [auth L] | Light Chain | IGLV1 | Lambda | hiv-1 gp41 | SAbDab (2026-04-24) |
| C [auth H] | Heavy Chain | IGHV1 | - | hiv-1 gp41 | SAbDab (2026-04-24) |














