Annotations: 21AQ

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Light Chain	IGLV3	Lambda	envelopment polyprotein	SAbDab (2026-05-15)
A	Heavy Chain	IGHV3	-	envelopment polyprotein	SAbDab (2026-05-15)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth H]	Envelopment polyprotein	-	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell virion attachment to host cell biological process involved in interspecies interaction between organisms adhesion of symbiont to host cell viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction symbiont entry into host cell symbiont entry into host	host intracellular membrane-bounded organelle host cellular component host intracellular part host cell endoplasmic reticulum host cell membrane other organism part host cell cytoplasm part host intracellular organelle cellular anatomical structure host cell cytoplasm host cell part host cell endomembrane system host intracellular region host cell endoplasmic reticulum membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell endoplasmic reticulum host cell membrane other organism part host cell cytoplasm part host intracellular organelle cellular anatomical structure host cell cytoplasm host cell part host cell endomembrane system host intracellular region host cell endoplasmic reticulum membrane membrane virion component virion membrane host cell Golgi membrane host cell Golgi apparatus
B	BD70-4008 light chain	-	-	-
A	BD70-4008 heavy chain	-	-	-

Chains	Accession	Name	Type
C [auth H]	IPR010826	Phlebovirus glycoprotein G1	Domain
C [auth H]	IPR043603	Phlebovirus glycoprotein G2, C-terminal domain	Domain
C [auth H]	IPR009878	Phlebovirus glycoprotein G2, fusion domain	Domain

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.

21AQ | pdb_000021aq