Annotations: 8ZDW

The cryoEM structure of H5N1 HA split from symmetric filament in conformation A

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
F [auth I]	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087922	3001616	SCOP2B (2022-06-29)
E [auth D]	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087922	3001616	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087922	3001616	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
H [auth L]		e8zdwL1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
G [auth F]		e8zdwF1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
D [auth U]		e8zdwU1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
J		e8zdwJ1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
I [auth E]		e8zdwE1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
C [auth R]	Chloroa_b-bind	e8zdwR01	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Chloroa_b-bind	ECOD (v295)
F [auth I]		e8zdwI1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
E [auth D]		e8zdwD1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
B	Chloroa_b-bind	e8zdwB01	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Chloroa_b-bind	ECOD (v295)
L [auth H]		e8zdwH1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
K [auth C]		e8zdwC1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F:	ECOD (v295)
A	Chloroa_b-bind	e8zdwA01	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Chloroa_b-bind	ECOD (v295)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
D [auth U], G [auth F], H [auth L]	Heavy Chain	IGHV1	-	hemagglutinin	SAbDab (2026-06-26)
C [auth R], I [auth E], J	Light Chain	IGKV3	Kappa	hemagglutinin	SAbDab (2026-06-26)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D [auth U], G [auth F], H [auth L]	Anti-H5N1 hemagglutinin monoclonal anitbody H5M9 heavy chain	-	response to stimulus immune response immune system process adaptive immune response	protein-containing complex immunoglobulin complex
C [auth R], I [auth E], J	H5M9 Fab, light chain	-	-	-
B, E [auth D], F [auth I]	Hemagglutinin	identical protein binding protein binding binding host cell surface binding host cell surface receptor binding	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane cellular process cellular component organization or biogenesis 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 viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane cellular process cellular component organization or biogenesis 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 import into cell receptor-mediated endocytosis of virus by host cell transport establishment of localization vesicle-mediated transport localization symbiont entry into host cell clathrin-dependent endocytosis symbiont entry into host clathrin-dependent endocytosis of virus by host cell receptor-mediated endocytosis endocytosis endocytosis involved in viral entry into host cell	virion component virion membrane viral membrane viral envelope host cell plasma membrane host cellular component cellular anatomical structure host cell part host cell membrane other organism part
A, K [auth C], L [auth H]	Hemagglutinin	identical protein binding protein binding binding host cell surface binding host cell surface receptor binding	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane cellular process cellular component organization or biogenesis 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 viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane cellular process cellular component organization or biogenesis 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 import into cell receptor-mediated endocytosis of virus by host cell transport establishment of localization vesicle-mediated transport localization symbiont entry into host cell clathrin-dependent endocytosis symbiont entry into host clathrin-dependent endocytosis of virus by host cell receptor-mediated endocytosis endocytosis endocytosis involved in viral entry into host cell	virion component virion membrane viral membrane viral envelope host cell plasma membrane host cellular component cellular anatomical structure host cell part host cell membrane other organism part

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D [auth U], G [auth F], H [auth L]	IPR003597	Immunoglobulin C1-set	Domain
D [auth U], G [auth F], H [auth L]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
D [auth U], G [auth F], H [auth L]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
D [auth U], G [auth F], H [auth L]	IPR003598	Immunoglobulin subtype 2	Domain
D [auth U], G [auth F], H [auth L]	IPR013106	Immunoglobulin V-set domain	Domain
D [auth U], G [auth F], H [auth L]	IPR003599	Immunoglobulin domain subtype	Domain
D [auth U], G [auth F], H [auth L]	IPR007110	Immunoglobulin-like domain	Domain
D [auth U], G [auth F], H [auth L]	IPR050380	Immune Recognition and Response Modulators	Family
B, E [auth D], F [auth I]	IPR001364	Haemagglutinin, influenzavirus A/B	Family
B, E [auth D], F [auth I]	IPR008980	Viral capsid/haemagglutinin protein	Homologous Superfamily
B, E [auth D], F [auth I]	IPR000149	Haemagglutinin, influenzavirus A	Family
B, E [auth D], F [auth I]	IPR013828	Haemagglutinin, HA1 chain, alpha/beta domain superfamily	Homologous Superfamily
A, K [auth C], L [auth H]	IPR001364	Haemagglutinin, influenzavirus A/B	Family
A, K [auth C], L [auth H]	IPR008980	Viral capsid/haemagglutinin protein	Homologous Superfamily
A, K [auth C], L [auth H]	IPR000149	Haemagglutinin, influenzavirus A	Family
A, K [auth C], L [auth H]	IPR013828	Haemagglutinin, HA1 chain, alpha/beta 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.