Annotations: 3N40

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B [auth F]	d3n40f2	All beta proteins	Immunoglobulin-like beta-sandwich	E set domains	automated matches	automated matches	CHIKV (Chikungunya virus ) [TaxId: 37124 ],	SCOPe (2.08)
B [auth F]	d3n40f1	Membrane and cell surface proteins and peptides	Viral glycoprotein, central and dimerisation domains	Viral glycoprotein, central and dimerisation domains	Viral glycoprotein, central and dimerisation domains	automated matches	CHIKV (Chikungunya virus ) [TaxId: 37124 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth P]	Alpha_E2_glycop_2nd	e3n40P3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_2nd	ECOD (1.6)
A [auth P]	Alpha_E2_glycop_1st	e3n40P2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_1st	ECOD (1.6)
A [auth P]	Alpha_E2_glycop_3rd	e3n40P4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E2_glycop_3rd	ECOD (1.6)
A [auth P]	Alpha_E3_glycop	e3n40P1	A: a+b two layers	X: Glycoprotein E3 (From Topology)	H: Glycoprotein E3 (From Topology)	T: Glycoprotein E3	F: Alpha_E3_glycop	ECOD (1.6)
B [auth F]	Alpha_E1_glycop_2nd	e3n40F1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Alpha_E1_glycop_2nd	ECOD (1.6)
B [auth F]	Alpha_E1_glycop_1st	e3n40F2	A: beta complex topology	X: Viral glycoprotein, central and dimerisation domains-like	H: Viral glycoprotein, central and dimerisation domains (From Topology)	T: Viral glycoprotein, central and dimerisation domains	F: Alpha_E1_glycop_1st	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth P]	1.10.287.2230	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
A [auth P]	2.60.40.3200	Mainly Beta	Sandwich	Immunoglobulin-like	Alphavirus E2 glycoprotein, A domain	CATH (4.3.0)
A [auth P]	2.60.40.4310	Mainly Beta	Sandwich	Immunoglobulin-like	Alphavirus E2 glycoprotein, domain B	CATH (4.3.0)
A [auth P]	2.60.40.2400	Mainly Beta	Sandwich	Immunoglobulin-like	Alphavirus E2 glycoprotein, domain C	CATH (4.3.0)
B [auth F]	2.60.98.10	Mainly Beta	Sandwich	Tick-borne Encephalitis virus Glycoprotein	domain 1	CATH (4.3.0)
B [auth F]	2.60.40.350	Mainly Beta	Sandwich	Immunoglobulin-like		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth P]	PF00943	Alphavirus E2 glycoprotein (Alpha_E2_glycop)	Alphavirus E2 glycoprotein	-	Family
A [auth P]	PF01563	Alphavirus E3 glycoprotein (Alpha_E3_glycop)	Alphavirus E3 glycoprotein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth P]	P62 envelope glycoprotein	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity structural molecule activity identical protein binding protein binding binding	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 organic substance metabolic process organonitrogen compound metabolic process 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 organic substance metabolic process organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	cell periphery plasma membrane membrane cellular anatomical entity host cell plasma membrane host cellular component host cell part host cell membrane intracellular anatomical structure cytoplasm host intracellular part host cell cytoplasm host intracellular region virion component cell periphery plasma membrane membrane cellular anatomical entity host cell plasma membrane host cellular component host cell part host cell membrane intracellular anatomical structure cytoplasm host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid T=4 icosahedral viral capsid
B [auth F]	E1 envelope glycoprotein	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity structural molecule activity identical protein binding protein binding binding	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 organic substance metabolic process organonitrogen compound metabolic process 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 organic substance metabolic process organonitrogen compound metabolic process proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process	cell periphery plasma membrane membrane cellular anatomical entity host cell plasma membrane host cellular component host cell part host cell membrane intracellular anatomical structure cytoplasm host intracellular part host cell cytoplasm host intracellular region virion component cell periphery plasma membrane membrane cellular anatomical entity host cell plasma membrane host cellular component host cell part host cell membrane intracellular anatomical structure cytoplasm host intracellular part host cell cytoplasm host intracellular region virion component virion membrane viral capsid icosahedral viral capsid T=4 icosahedral viral capsid

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth P]	IPR002533	Alphavirus E3 spike glycoprotein	Domain
A [auth P]	IPR038055	Flaviviral glycoprotein E, dimerisation domain	Homologous Superfamily
A [auth P]	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A [auth P]	IPR042304	Alphavirus E2 glycoprotein, domain A	Homologous Superfamily
A [auth P]	IPR036253	Flavivirus glycoprotein, central and dimerisation domain superfamily	Homologous Superfamily
A [auth P]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A [auth P]	IPR042305	Alphavirus E2 glycoprotein, domain B	Homologous Superfamily
A [auth P]	IPR042306	Alphavirus E2 glycoprotein, domain C	Homologous Superfamily
A [auth P]	IPR000936	Alphavirus E2 glycoprotein	Family
A [auth P]	IPR000930	Peptidase S3, togavirin	Domain
A [auth P]	IPR002548	Alphavirus E1 glycoprotein	Domain
A [auth P]	IPR000336	Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily	Homologous Superfamily
A [auth P]	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
B [auth F]	IPR002533	Alphavirus E3 spike glycoprotein	Domain
B [auth F]	IPR038055	Flaviviral glycoprotein E, dimerisation domain	Homologous Superfamily
B [auth F]	IPR014756	Immunoglobulin E-set	Homologous Superfamily
B [auth F]	IPR042304	Alphavirus E2 glycoprotein, domain A	Homologous Superfamily
B [auth F]	IPR036253	Flavivirus glycoprotein, central and dimerisation domain superfamily	Homologous Superfamily
B [auth F]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
B [auth F]	IPR042305	Alphavirus E2 glycoprotein, domain B	Homologous Superfamily
B [auth F]	IPR042306	Alphavirus E2 glycoprotein, domain C	Homologous Superfamily
B [auth F]	IPR000936	Alphavirus E2 glycoprotein	Family
B [auth F]	IPR000930	Peptidase S3, togavirin	Domain
B [auth F]	IPR002548	Alphavirus E1 glycoprotein	Domain
B [auth F]	IPR000336	Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth F]	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily