Annotations: 1I4H

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1i4hb1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Staphylococcal enterotoxin A, SEA	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
B	d1i4hb2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Staphylococcal enterotoxin A, SEA	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
A	d1i4ha1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Staphylococcal enterotoxin A, SEA	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
A	d1i4ha2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Staphylococcal enterotoxin A, SEA	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Bacterial enterotoxins	8041864	3000434	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Superantigen toxins C-terminal domain-like	8034560	3000376	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Superantigen toxins C-terminal domain-like	8034560	3000376	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Bacterial enterotoxins	8041864	3000434	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)
B	Stap_Strp_toxin	e1i4hB1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Stap_Strp_toxin	ECOD (v294.1)
B	S4	e1i4hB2	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: S4	ECOD (v294.1)
A	Stap_Strp_toxin	e1i4hA1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Stap_Strp_toxin	ECOD (v294.1)
A	S4	e1i4hA2	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: S4	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.40.50.110	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
B	3.10.20.120	Alpha Beta	Roll	Ubiquitin-like (UB roll)		CATH (4.3.0)
A	2.40.50.110	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
A	3.10.20.120	Alpha Beta	Roll	Ubiquitin-like (UB roll)		CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	ENTEROTOXIN TYPE A	protein binding binding signaling receptor binding MHC class II protein binding MHC protein binding cation binding ion binding metal ion binding small molecule binding toxin activity	-	cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006123	Staphylococcal/Streptococcal toxin, beta-grasp domain	Domain
A, B	IPR006177	Staphylococcal/streptococcal toxin, bacterial	Family
A, B	IPR006126	Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin, conserved site	Conserved Site
A, B	IPR016091	Superantigen toxin, C-terminal	Homologous Superfamily
A, B	IPR006173	Staphylococcal/Streptococcal toxin, OB-fold	Domain
A, B	IPR013307	Superantigen, staphylococcal/streptococcal toxin, bacterial	Family
A, B	IPR008992	Enterotoxin	Homologous Superfamily

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.