3AL4 | pdb_00003al4

Crystal structure of the swine-origin A (H1N1)-2009 influenza A virus hemagglutinin (HA) reveals similar antigenicity to that of the 1918 pandemic virus

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
L	d3al4l_	Coiled coil proteins	Stalk segment of viral fusion proteins	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
J	d3al4j_	Coiled coil proteins	Stalk segment of viral fusion proteins	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
H	d3al4h_	Coiled coil proteins	Stalk segment of viral fusion proteins	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
F	d3al4f_	Coiled coil proteins	Stalk segment of viral fusion proteins	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
D	d3al4d_	Coiled coil proteins	Stalk segment of viral fusion proteins	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
B	d3al4b_	Coiled coil proteins	Stalk segment of viral fusion proteins	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	Influenza hemagglutinin (stalk)	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
I	d3al4i_	All beta proteins	Viral protein domain	Viral protein domain	Influenza hemagglutinin headpiece	Hemagglutinin	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
K	d3al4k_	All beta proteins	Viral protein domain	Viral protein domain	Influenza hemagglutinin headpiece	Hemagglutinin	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
G	d3al4g_	All beta proteins	Viral protein domain	Viral protein domain	Influenza hemagglutinin headpiece	Hemagglutinin	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
E	d3al4e_	All beta proteins	Viral protein domain	Viral protein domain	Influenza hemagglutinin headpiece	Hemagglutinin	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
C	d3al4c_	All beta proteins	Viral protein domain	Viral protein domain	Influenza hemagglutinin headpiece	Hemagglutinin	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)
A	d3al4a_	All beta proteins	Viral protein domain	Viral protein domain	Influenza hemagglutinin headpiece	Hemagglutinin	(Influenza A virus (A/California/04/2009(H1N1)) ) [TaxId: 641501 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
L	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087956	3001616	SCOP2B (2022-06-29)
J	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087956	3001616	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087956	3001616	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087956	3001616	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087956	3001616	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Influenza hemagglutinin (stalk)	8087956	3001616	SCOP2B (2022-06-29)
I	SCOP2B Superfamily	Influenza hemagglutinin domain-like	8087794	3001342	SCOP2B (2022-06-29)
K	SCOP2B Superfamily	Influenza hemagglutinin domain-like	8087794	3001342	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Influenza hemagglutinin domain-like	8087794	3001342	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Influenza hemagglutinin domain-like	8087794	3001342	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Influenza hemagglutinin domain-like	8087794	3001342	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Influenza hemagglutinin domain-like	8087794	3001342	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)
L	Med6	e3al4L1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Med6	ECOD (v295)
J	Med6	e3al4J1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Med6	ECOD (v295)
H	Med6	e3al4H1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Med6	ECOD (v295)
F	Med6	e3al4F1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Med6	ECOD (v295)
D	Med6	e3al4D1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: Med6	ECOD (v295)
B	ColA_N	e3al4B01	A: alpha arrays	X: Colicin-A N-terminal domain	H: Colicin-A N-terminal domain	T: Colicin-A N-terminal domain	F: ColA_N	ECOD (v295)
I	Cytochrome_CBB3	e3al4I1	A: alpha arrays	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Cytochrome_CBB3	ECOD (v295)
K	Cytochrome_CBB3	e3al4K1	A: alpha arrays	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Cytochrome_CBB3	ECOD (v295)
G	Cytochrome_CBB3	e3al4G1	A: alpha arrays	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Cytochrome_CBB3	ECOD (v295)
E	Cytochrome_CBB3	e3al4E1	A: alpha arrays	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Cytochrome_CBB3	ECOD (v295)
C	Cytochrome_CBB3	e3al4C1	A: alpha arrays	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Cytochrome_CBB3	ECOD (v295)
A	TetR_N	e3al4A1	A: alpha arrays	X: Ribonuclease H-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: TetR_N	ECOD (v295)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
L	3.90.20.10	Alpha Beta	Alpha-Beta Complex	Hemagglutinin Ectodomain	Chain B	CATH (4.3.0)
J	3.90.20.10	Alpha Beta	Alpha-Beta Complex	Hemagglutinin Ectodomain	Chain B	CATH (4.3.0)
H	3.90.20.10	Alpha Beta	Alpha-Beta Complex	Hemagglutinin Ectodomain	Chain B	CATH (4.3.0)
F	3.90.20.10	Alpha Beta	Alpha-Beta Complex	Hemagglutinin Ectodomain	Chain B	CATH (4.3.0)
D	3.90.20.10	Alpha Beta	Alpha-Beta Complex	Hemagglutinin Ectodomain	Chain B	CATH (4.3.0)
B	3.90.20.10	Alpha Beta	Alpha-Beta Complex	Hemagglutinin Ectodomain	Chain B	CATH (4.3.0)
I	2.10.77.10	Mainly Beta	Ribbon	Hemagglutinin	Chain A, domain 2	CATH (4.3.0)
I	3.90.209.20	Alpha Beta	Alpha-Beta Complex	Hemagglutinin (Ha1 Chain)	Chain: A	CATH (4.3.0)
K	2.10.77.10	Mainly Beta	Ribbon	Hemagglutinin	Chain A, domain 2	CATH (4.3.0)
K	3.90.209.20	Alpha Beta	Alpha-Beta Complex	Hemagglutinin (Ha1 Chain)	Chain: A	CATH (4.3.0)
G	2.10.77.10	Mainly Beta	Ribbon	Hemagglutinin	Chain A, domain 2	CATH (4.3.0)
G	3.90.209.20	Alpha Beta	Alpha-Beta Complex	Hemagglutinin (Ha1 Chain)	Chain: A	CATH (4.3.0)
E	2.10.77.10	Mainly Beta	Ribbon	Hemagglutinin	Chain A, domain 2	CATH (4.3.0)
E	3.90.209.20	Alpha Beta	Alpha-Beta Complex	Hemagglutinin (Ha1 Chain)	Chain: A	CATH (4.3.0)
C	2.10.77.10	Mainly Beta	Ribbon	Hemagglutinin	Chain A, domain 2	CATH (4.3.0)
C	3.90.209.20	Alpha Beta	Alpha-Beta Complex	Hemagglutinin (Ha1 Chain)	Chain: A	CATH (4.3.0)
A	2.10.77.10	Mainly Beta	Ribbon	Hemagglutinin	Chain A, domain 2	CATH (4.3.0)
A	3.90.209.20	Alpha Beta	Alpha-Beta Complex	Hemagglutinin (Ha1 Chain)	Chain: A	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D, F, H, J B, D, F, H, J, L	Hemagglutinin	cation binding ion binding binding metal ion binding small molecule 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 non-lytic viral release viral budding virion assembly exit from host cell viral budding from plasma membrane viral release from host cell 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	cellular anatomical structure membrane virion component virion membrane viral membrane viral envelope host cell plasma membrane host cellular component host cell part host cell membrane other organism part
A, C, E, G, I A, C, E, G, I, K	Hemagglutinin	cation binding ion binding binding metal ion binding small molecule 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 non-lytic viral release viral budding virion assembly exit from host cell viral budding from plasma membrane viral release from host cell 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	cellular anatomical structure membrane virion component virion membrane viral membrane viral envelope host cell plasma membrane host cellular component host cell part host cell membrane other organism part

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D, F, H, J B, D, F, H, J, L	IPR001364	Haemagglutinin, influenzavirus A/B	Family
B, D, F, H, J B, D, F, H, J, L	IPR008980	Viral capsid/haemagglutinin protein	Homologous Superfamily
B, D, F, H, J B, D, F, H, J, L	IPR000149	Haemagglutinin, influenzavirus A	Family
B, D, F, H, J B, D, F, H, J, L	IPR013828	Haemagglutinin, HA1 chain, alpha/beta domain superfamily	Homologous Superfamily
A, C, E, G, I A, C, E, G, I, K	IPR001364	Haemagglutinin, influenzavirus A/B	Family
A, C, E, G, I A, C, E, G, I, K	IPR008980	Viral capsid/haemagglutinin protein	Homologous Superfamily
A, C, E, G, I A, C, E, G, I, K	IPR000149	Haemagglutinin, influenzavirus A	Family
A, C, E, G, I A, C, E, G, I, K	IPR013828	Haemagglutinin, HA1 chain, alpha/beta domain superfamily	Homologous Superfamily

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

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.