4O5I | pdb_00004o5i

Crystal structure of broadly neutralizing antibody F045-092 in complex with A/Victoria/361/2011 (H3N2) influenza hemagglutinin

External Resource: Annotation

Domain Annotation: ECOD Classification
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family 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)
A	DUF4170	e4o5iA1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
C	DUF4170	e4o5iC1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
E	DUF4170	e4o5iE1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
I	DUF4170	e4o5iI1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
K	DUF4170	e4o5iK1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
G	DUF4170	e4o5iG1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
B	DUF4170	e4o5iB1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
D	CBM_4_9	e4o5iD1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: CBM_4_9	ECOD (v294.1)
F	CBM_4_9	e4o5iF1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: CBM_4_9	ECOD (v294.1)
H	CBM_4_9	e4o5iH1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: CBM_4_9	ECOD (v294.1)
J	CBM_4_9	e4o5iJ1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: CBM_4_9	ECOD (v294.1)
L	CBM_4_9	e4o5iL1	A: a/b three-layered sandwiches	X: jelly-roll	H: Galactose-binding domain-like	T: Galactose-binding domain-like	F: CBM_4_9	ECOD (v294.1)
M	DUF4170	e4o5iM1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
O	DUF4170	e4o5iO1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
Q	DUF4170	e4o5iQ1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
S	DUF4170	e4o5iS1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
W	DUF4170	e4o5iW1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
U	DUF4170	e4o5iU1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
N	DUF4170	e4o5iN1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
P	DUF4170	e4o5iP1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
R	DUF4170	e4o5iR1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
T	DUF4170	e4o5iT1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
V	DUF4170	e4o5iV1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)
X	DUF4170	e4o5iX1	A: a/b three-layered sandwiches	X: DEATH domain	H: HTH	T: winged helix domain	F: DUF4170	ECOD (v294.1)

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
M, O, Q, S, U M, O, Q, S, U, W	F045-092 Fab	VH-CH1	Homo sapiens (human)	IGHV1-6901, IGHV1-6906, IGHV1-6912, IGHV1-6913, IGHV1-6914, IGHV1-69D01, IGHJ601, IGHJ602, IGHG1*03	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202611-0)
N, P, R, T, V N, P, R, T, V, X	F045-092 Fab	L-LAMBDA	Homo sapiens (human)	IGLV1-4401, IGLJ201, IGLJ301, IGLC201, IGLC202, IGLC304	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202611-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
M, O, Q, S, U M, O, Q, S, U, W	Heavy Chain	IGHV1	-	hemagglutinin ha1 chain	SAbDab (2026-03-27)
N, P, R, T, V N, P, R, T, V, X	Light Chain	IGLV1	Lambda	hemagglutinin ha1 chain	SAbDab (2026-03-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
N, P, R, T, V N, P, R, T, V, X	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, E, G, I A, C, E, G, I, K	Hemagglutinin HA1 chain	host cell surface binding 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
B, D, F, H, J B, D, F, H, J, L	Hemagglutinin HA2 chain	host cell surface binding 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
M, O, Q, S, U M, O, Q, S, U, W	Fab F045-092 heavy chain	-	response to stimulus immune response immune system process adaptive immune response	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex immunoglobulin complex extracellular region
N, P, R, T, V N, P, R, T, V, X	Fab F045-092 light chain	binding antigen binding	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity response to stimulus immune response immune system process B cell mediated immunity leukocyte mediated immunity immunoglobulin mediated immune response adaptive immune response immune effector process	cellular anatomical structure extracellular region extracellular space blood microparticle extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane cellular anatomical structure extracellular region extracellular space blood microparticle extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane IgG immunoglobulin complex protein-containing complex immunoglobulin complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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
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
M, O, Q, S, U M, O, Q, S, U, W	IPR003597	Immunoglobulin C1-set	Domain
M, O, Q, S, U M, O, Q, S, U, W	IPR050199	Immunoglobulin Heavy Variable	Family
M, O, Q, S, U M, O, Q, S, U, W	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
M, O, Q, S, U M, O, Q, S, U, W	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
M, O, Q, S, U M, O, Q, S, U, W	IPR013106	Immunoglobulin V-set domain	Domain
M, O, Q, S, U M, O, Q, S, U, W	IPR003599	Immunoglobulin domain subtype	Domain
M, O, Q, S, U M, O, Q, S, U, W	IPR007110	Immunoglobulin-like domain	Domain
M, O, Q, S, U M, O, Q, S, U, W	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
N, P, R, T, V N, P, R, T, V, X	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
N, P, R, T, V N, P, R, T, V, X	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
N, P, R, T, V N, P, R, T, V, X	IPR003597	Immunoglobulin C1-set	Domain
N, P, R, T, V N, P, R, T, V, X	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
N, P, R, T, V N, P, R, T, V, X	IPR007110	Immunoglobulin-like domain	Domain
N, P, R, T, V N, P, R, T, V, X	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site