Structure of the full-length Clostridium difficile toxin B in complex with 3 VHHs
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| D [auth F] | e6oq5F1 | A: Ten stranded beta/alpha barrel | X: Ten stranded beta/alpha barrel | H: Ten stranded beta/alpha barrel | T: Lsr2_DNA-bd (DEPRECATED) | F: | ECOD (20:10:01) | |
| C [auth E] | e6oq5E1 | A: Ten stranded beta/alpha barrel | X: Ten stranded beta/alpha barrel | H: Ten stranded beta/alpha barrel | T: Lsr2_DNA-bd (DEPRECATED) | F: | ECOD (20:10:01) | |
| B [auth D] | e6oq5D1 | A: Ten stranded beta/alpha barrel | X: Ten stranded beta/alpha barrel | H: Ten stranded beta/alpha barrel | T: Lsr2_DNA-bd (DEPRECATED) | F: | ECOD (20:10:01) | |
| A | e6oq5A6 | A: Mog1p/PsbP-like | X: Nucleotidyltransferase | H: Nucleotidyltransferase | T: | F: | ECOD (20:10:01) | |
| A | e6oq5A1 | A: Family A G protein-coupled receptor-like | X: Family A G protein-coupled receptor-like | H: Family A G protein-coupled receptor-like | T: PF30660 | F: | ECOD (20:10:01) | |
| A | e6oq5A3 | A: Family A G protein-coupled receptor-like | X: Family A G protein-coupled receptor-like | H: Family A G protein-coupled receptor-like | T: HORMA | F: | ECOD (20:10:01) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| A | 1.10.10.1780 | Mainly Alpha | Orthogonal Bundle | Arc Repressor Mutant, subunit A | CATH (utative) | |
| A | 3.40.50.11050 | Alpha Beta | 3-Layer(aba) Sandwich | Rossmann fold | MARTX cysteine protease (CPD) domain | CATH (utative) |
| A | 2.10.270.10 | Mainly Beta | Ribbon | left handed beta-beta-3-solenoid | Cholin Binding | CATH (utative) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| D [auth F] | Heavy Chain | IGHV1 | - | toxin b | SAbDab (2026-03-13) |
| B [auth D] | Heavy Chain | IGHV1 | - | toxin b | SAbDab (2026-03-13) |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| IPR038383 | CGT/MARTX, cysteine protease (CPD) domain superfamily | Homologous Superfamily | |
| IPR024772 | TcdA/TcdB toxin, N-terminal helical domain | Domain | |
| IPR020974 | CGT/MARTX, cysteine protease (CPD) domain | Domain | |
| IPR024769 | TcdA/TcdB toxin, pore forming domain | Domain | |
| IPR029044 | Nucleotide-diphospho-sugar transferases | Homologous Superfamily | |
| IPR024770 | TcdA/TcdB toxin, catalytic glycosyltransferase domain | Domain | |
| IPR018337 | Cell wall/choline-binding repeat | Repeat |
Membrane Protein Annotation: OPM OPM Database Homepage
| Chains | External Link | Type | Class | Superfamily | Family |
|---|---|---|---|---|---|
| OPM | Monotopic/peripheral | Alpha/Beta monotopic/peripheral | Nucleotide-diphospho-sugar transferases | Glycosylating toxin |














