Annotations: 1V1O

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1v1oa1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Exotoxin 1 (SET1, Superantigen-like protein 7)	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
A	d1v1oa2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Exotoxin 1 (SET1, Superantigen-like protein 7)	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
B	d1v1ob1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Exotoxin 1 (SET1, Superantigen-like protein 7)	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
B	d1v1ob2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Exotoxin 1 (SET1, Superantigen-like protein 7)	(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)
A	SCOP2 Family	Superantigen toxins C-terminal domain	8028745	4000990	SCOP2 (2022-06-29)
A	SCOP2 Family	Superantigen toxins N-terminal domain	8028744	4001839	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Superantigen toxins C-terminal domain-like	8041124	3000376	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Bacterial enterotoxins	8041123	3000434	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Superantigen toxins C-terminal domain-like	8041124	3000376	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Bacterial enterotoxins	8041123	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)
A	SSL_OB	e1v1oA1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: SSL_OB	ECOD (1.6)
A	Stap_Strp_tox_C	e1v1oA2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Stap_Strp_tox_C	ECOD (1.6)
B	SSL_OB	e1v1oB1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: SSL_OB	ECOD (1.6)
B	Stap_Strp_tox_C	e1v1oB2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Stap_Strp_tox_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF09199	Staphylococcal superantigen-like OB-fold domain (SSL_OB)	Staphylococcal superantigen-like OB-fold domain	This OB-fold domain folds into a five-stranded beta-barrel [1]. Members of this family are found in various staphylococcal toxins described as staphylococcal superantigen-like (SSL) proteins that are related to the staphylococcal enterotoxins (SEs) o ...	This OB-fold domain folds into a five-stranded beta-barrel [1]. Members of this family are found in various staphylococcal toxins described as staphylococcal superantigen-like (SSL) proteins that are related to the staphylococcal enterotoxins (SEs) or superantigens. These SSL proteins of which 11 have so far been characterised have a typical SE tertiary structure consisting of a distinct oligonucleotide/oligosaccharide binding (OB-fold), this domain, linked to a beta-grasp domain, family Stap_Strp_tox_C, Pfam:PF02876. SSLs do not bind to T-cell receptors or major histocompatibility complex class II molecules and do not stimulate T cells. SSLs target components of innate immunity, such as complement, Fc receptors, and myeloid cells 2,3,4,5,6,7,8]. SSL protein 7 (SSL7) is the best characterised of the SSLs and binds complement factor C5 and IgA with high affinity and inhibits the end stage of complement activation and IgA binding to FcalphaR [8].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	EXOTOXIN 1	-	-	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006126	Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin, conserved site	Conserved Site
A, B	IPR016091	Superantigen toxin, C-terminal	Homologous Superfamily
A, B	IPR008375	Staphylococcus aureus exotoxin	Family
A, B	IPR013307	Superantigen, staphylococcal/streptococcal toxin, bacterial	Family
A, B	IPR008992	Enterotoxin	Homologous Superfamily
A, B	IPR015282	Staphylococcal superantigen-like OB-fold domain	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.