Annotations: 3V6Z

Crystal Structure of Hepatitis B Virus e-antigen

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)
F	Rrf2	e3v6zF1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: Rrf2	ECOD (v294.2)
E	Pkinase	e3v6zE1	A: beta barrels	X: Ribonuclease H-like	H: Ribonuclease H-like	T: Ribonuclease H-like	F: Pkinase	ECOD (v294.2)
D	V-set	e3v6zD1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (v294.2)
B	V-set	e3v6zB1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: V-set	ECOD (v294.2)
C	ABC_tran	e3v6zC1	A: beta barrels	X: beta-Grasp	H: HTH	T: winged helix domain	F: ABC_tran	ECOD (v294.2)
A	Pkinase	e3v6zA1	A: beta barrels	X: Ribonuclease H-like	H: Ribonuclease H-like	T: Ribonuclease H-like	F: Pkinase	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	1.10.4090.10	Mainly Alpha	Orthogonal Bundle	Hepatitis B viral capsid (hbcag) fold	Viral capsid, core domain supefamily, Hepatitis B virus	CATH (4.3.0)
E	1.10.4090.10	Mainly Alpha	Orthogonal Bundle	Hepatitis B viral capsid (hbcag) fold	Viral capsid, core domain supefamily, Hepatitis B virus	CATH (4.3.0)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	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
B, D	FAB E6	L-KAPPA	Mus musculus (house mouse)	IGKV8-2701, IGKJ102, IGKJ201, IGKC01, IGKC*02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2B_KAPPA	IMGT (202617-0)
A, C	FAB E6	VH-CH1	Mus musculus (house mouse)	IGHV5-6-101, IGHV5-601, IGHJ401, IGHG2B02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2B_KAPPA	IMGT (202617-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B, D	Light Chain	IGKV8	Kappa	e-antigen	SAbDab (2026-05-08)
A, C	Heavy Chain	IGHV5	-	e-antigen	SAbDab (2026-05-08)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E, F	e-antigen	DNA binding binding nucleic acid binding structural molecule activity RNA binding	biological process involved in interspecies interaction between organisms viral penetration into host nucleus intracellular transport of virus viral process viral life cycle transport of virus biological process involved in symbiotic interaction symbiont entry into host cell symbiont entry into host biological process involved in interaction with host microtubule-dependent intracellular transport of viral material microtubule-dependent intracellular transport of viral material towards nucleus transport of viral material towards nucleus	host cellular component cellular anatomical structure host cell other organism part viral capsid icosahedral viral capsid T=4 icosahedral viral capsid virion component extracellular region host intracellular part host cell cytoplasm host cell part host intracellular region
B, D	Fab e6 Light Chain	-	-	-
A, C	Fab e6 Heavy Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E, F	IPR013195	Hepatitis B virus, capsid N-terminal	Domain
E, F	IPR036459	Viral capsid core domain supefamily, Hepatitis B virus	Homologous Superfamily
E, F	IPR002006	Hepatitis core antigen	Family

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

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.