Annotations: 4LQF

Structure of murine IgG2b A2C7-Fab in complex with vaccinia antigen A33R at the resolution of 2.3 Angstroms

External Resource: Annotation

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

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth L]	d4lqfl1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
C [auth L]	d4lqfl2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth H]	d4lqfh_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	(Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A		e4lqfA1	A: a/b three-layered sandwiches	X: avirulence protein AvrPiz-t homologs	H: avirulence protein AvrPiz-t homologs	T: avirulence protein AvrPiz-t homologs	F:	ECOD (v294.1)
C [auth L]		e4lqfL1	A: a/b three-layered sandwiches	X: avirulence protein AvrPiz-t homologs	H: avirulence protein AvrPiz-t homologs	T: avirulence protein AvrPiz-t homologs	F:	ECOD (v294.1)
B [auth H]		e4lqfH1	A: a/b three-layered sandwiches	X: avirulence protein AvrPiz-t homologs	H: avirulence protein AvrPiz-t homologs	T: avirulence protein AvrPiz-t homologs	F:	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.100.10	Alpha Beta	Roll	Mannose-Binding Protein A	Chain A	CATH (4.3.0)
C [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B [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
C [auth L]	A2C7 Fab	L-KAPPA	Mus musculus (house mouse)	IGKV1-11001, IGKJ101, IGKC01, IGKC02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2B_KAPPA	IMGT (202615-0)
B [auth H]	A2C7 Fab	VH-CH1	Mus musculus (house mouse)	IGHV5-1202, IGHJ401, IGHG2B*02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2B_KAPPA	IMGT (202615-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth L]	Light Chain	IGKV1	Kappa	a33r	SAbDab (2026-04-24)
B [auth H]	Heavy Chain	IGHV5	-	a33r	SAbDab (2026-04-24)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	A33R	cation binding ion binding binding metal ion binding small molecule binding	-	host cellular component cellular anatomical structure host cell part host cell membrane other organism part virion component virion membrane
C [auth L]	Murine IgG2b A2C7 Light chain Fab domain	-	-	-
B [auth H]	Murine IgG2b A2C7 Heavy chain Fab domain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR009238	Chordopoxvirus A33R	Family
A	IPR016186	C-type lectin-like/link domain superfamily	Homologous Superfamily

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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.