Annotations: 7TXW

Crystal structure of the complex of the malaria sexual stage protein and vaccine target Pfs25 with the Fab fragment of a transmission blocking antibody 1G2

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family 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)
A [auth L]	V-set	e7txwL1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: V-set	ECOD (v294.1)
B [auth H]	V-set	e7txwH1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: V-set	ECOD (v294.1)
C [auth A]	V-set	e7txwA1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: V-set	ECOD (v294.1)

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 (utative)
B [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C [auth A]	2.90.20.10	Mainly Beta	Orthogonal Prism	Plasmodium vivax P25 fold	Plasmodium vivax P25 domain	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A [auth L]	Light Chain	IGKV1	Kappa	ookinete surface protein p25	SAbDab (2026-04-24)
B [auth H]	Heavy Chain	IGHV1	-	ookinete surface protein p25	SAbDab (2026-04-24)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth A]	PF06247	Pvs28 EGF domain (Plasmod_Pvs28)	Pvs28 EGF domain	This family consists of several ookinete surface proteins (Pvs28) from several species of Plasmodium. Pvs25 and Pvs28 are expressed on the surface of ookinetes. These proteins are potential candidates for vaccine and induce antibodies that block the ...	This family consists of several ookinete surface proteins (Pvs28) from several species of Plasmodium. Pvs25 and Pvs28 are expressed on the surface of ookinetes. These proteins are potential candidates for vaccine and induce antibodies that block the infectivity of Plasmodium vivax in immunised animals [1]. The structure of this protein shows it is composed of four EGF domains [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth L]	Fab fragment of monoclonal antibody 1G2 light chain	-	-	-
B [auth H]	Fab fragment of monoclonal antibody 1G2 heavy chain	-	-	-
C [auth A]	Ookinete surface protein P25	-	-	cell surface cellular anatomical structure cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A]	IPR010423	Ookinete surface antigen, EGF domain	Domain
C [auth A]	IPR000742	EGF-like domain	Domain

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.