Annotations: 6O23

Crystal structure of 2243 Fab in complex with circumsporozoite protein NANP5

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Pico_P1A	e6o23B1	A: alpha arrays	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: Pico_P1A	ECOD (v295.2)
D	AAA	e6o23D1	A: alpha arrays	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: AAA	ECOD (v295.2)
A	AAA	e6o23A1	A: alpha arrays	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: AAA	ECOD (v295.2)
C	Pico_P1A	e6o23C1	A: alpha arrays	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Family A G protein-coupled receptor-like	F: Pico_P1A	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

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, D	Fab 2243, anti-PfCSP	L-KAPPA	Homo sapiens (human)	IGKV1-503, IGKJ301, IGKC*01	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202639-0)
A, C	Fab 2243, anti-PfCSP	VH-CH1	Homo sapiens (human)	IGHV3-3301, IGHV3-3304, IGHJ401, IGHJ402, IGHJ403, IGHG103, IGHG108, IGHG106	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202639-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, D	Light Chain	IGKV1	Kappa	circumsporozoite protein	SAbDab (2026-10-09)
A, C	Heavy Chain	IGHV3	-	circumsporozoite protein	SAbDab (2026-10-09)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D	2243 kappa light chain	-	-	-
E	Circumsporozoite protein	-	biological process involved in interspecies interaction between organisms symbiont entry into host cell viral process symbiont entry into host viral life cycle entry into host cell by a symbiont-containing vacuole biological process involved in interaction with host biological process involved in symbiotic interaction	cell periphery cellular anatomical structure plasma membrane membrane cell surface external side of plasma membrane side of membrane intracellular anatomical structure cytoplasm
A, C	2243 Fab heavy chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E	IPR051860	Plasmodium_CSP_Invasion	Unknown
E	IPR000884	Thrombospondin type-1 (TSP1) repeat	Repeat
E	IPR003067	Plasmodium circumsporozoite protein	Family
E	IPR036383	Thrombospondin type-1 repeat superfamily	Homologous Superfamily