Structure of PfCSP peptide 21 with antibody P3-21
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| C [auth D] | F_UNCLASSIFIED | e7ufnD2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| B [auth C] | F_UNCLASSIFIED | e7ufnC2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| D [auth A] | F_UNCLASSIFIED | e7ufnA1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| A [auth B] | F_UNCLASSIFIED | e7ufnB1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: F_UNCLASSIFIED | ECOD (1.6) |
SAbDab Antibody Annotation SAbDab Database Homepage
| Chain | Chain Class | Chain Subclass | Chain Type | Antigen Name(s) | Provenance Source |
|---|---|---|---|---|---|
| B [auth C], C [auth D] | Light Chain | IGKV4 | Kappa | pfcsp peptide 21 | SAbDab (2025-12-26) |
| A [auth B], D [auth A] | Heavy Chain | IGHV1 | - | pfcsp peptide 21 | SAbDab (2025-12-26) |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
| Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
|---|---|---|---|---|
| PfCSP peptide 21 |
| |||
| B [auth C], C [auth D] | P3-21 Fab Light chain | - | - | - |
| A [auth B], D [auth A] | P3-21 Fab Heavy chain | - | - | - |
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| IPR000884 | Thrombospondin type-1 (TSP1) repeat | Repeat | |
| IPR003067 | Plasmodium circumsporozoite protein | Family | |
| IPR051860 | Plasmodium Circumsporozoite Invasion Protein | Family | |
| IPR036383 | Thrombospondin type-1 repeat superfamily | Homologous Superfamily |














