2AQ3

Crystal structure of T-cell receptor V beta domain variant complexed with superantigen SEC3

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2aq3a1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	T-cell antigen receptor	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
C	d2aq3c_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
E	d2aq3e_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
G	d2aq3g_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	automated matches	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d2aq3b1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Staphylococcal enterotoxin C3, SEC3	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
B	d2aq3b2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Staphylococcal enterotoxin C3, SEC3	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
D	d2aq3d1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Staphylococcal enterotoxin C3, SEC3	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
D	d2aq3d2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Staphylococcal enterotoxin C3, SEC3	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
F	d2aq3f1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Staphylococcal enterotoxin C3, SEC3	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
F	d2aq3f2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Staphylococcal enterotoxin C3, SEC3	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
H	d2aq3h1	All beta proteins	OB-fold	Bacterial enterotoxins	Superantigen toxins, N-terminal domain	Staphylococcal enterotoxin C3, SEC3	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
H	d2aq3h2	Alpha and beta proteins (a+b)	beta-Grasp (ubiquitin-like)	Superantigen toxins, C-terminal domain	Superantigen toxins, C-terminal domain	Staphylococcal enterotoxin C3, SEC3	(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	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8055394	3000071	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8055394	3000071	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8055394	3000071	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8055394	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Superantigen toxins C-terminal domain-like	8042830	3000376	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Bacterial enterotoxins	8042829	3000434	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Superantigen toxins C-terminal domain-like	8042830	3000376	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Bacterial enterotoxins	8042829	3000434	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Superantigen toxins C-terminal domain-like	8042830	3000376	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Bacterial enterotoxins	8042829	3000434	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Superantigen toxins C-terminal domain-like	8042830	3000376	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Bacterial enterotoxins	8042829	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	V-set_3	e2aq3A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
C	V-set_3	e2aq3C1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
E	V-set_3	e2aq3E1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
G	V-set_3	e2aq3G1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
B	Stap_Strp_toxin	e2aq3B1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: Stap_Strp_toxin	ECOD (1.6)
B	Stap_Strp_tox_C	e2aq3B2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Stap_Strp_tox_C	ECOD (1.6)
D	Stap_Strp_toxin	e2aq3D1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: Stap_Strp_toxin	ECOD (1.6)
D	Stap_Strp_tox_C	e2aq3D2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Stap_Strp_tox_C	ECOD (1.6)
F	Stap_Strp_toxin	e2aq3F1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: Stap_Strp_toxin	ECOD (1.6)
F	Stap_Strp_tox_C	e2aq3F2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Stap_Strp_tox_C	ECOD (1.6)
H	Stap_Strp_toxin	e2aq3H1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: Stap_Strp_toxin	ECOD (1.6)
H	Stap_Strp_tox_C	e2aq3H2	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	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
G	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	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)
D	3.10.20.120	Alpha Beta	Roll	Ubiquitin-like (UB roll)		CATH (4.3.0)
D	2.40.50.110	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
F	3.10.20.120	Alpha Beta	Roll	Ubiquitin-like (UB roll)		CATH (4.3.0)
F	2.40.50.110	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)
H	3.10.20.120	Alpha Beta	Roll	Ubiquitin-like (UB roll)		CATH (4.3.0)
H	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, C, E, G	PF07686	Immunoglobulin V-set domain (V-set)	Immunoglobulin V-set domain	This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.	Domain
B, D, F, H	PF01123	Staphylococcal/Streptococcal toxin, OB-fold domain (Stap_Strp_toxin)	Staphylococcal/Streptococcal toxin, OB-fold domain	This entry represents an OB-fold domain found in enterotoxins.	Domain
B, D, F, H	PF02876	Staphylococcal/Streptococcal toxin, beta-grasp domain (Stap_Strp_tox_C)	Staphylococcal/Streptococcal toxin, beta-grasp domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, E, G	T-cell receptor beta chain V	-	cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation cellular process signal transduction cell communication immune response immune system process adaptive immune response	cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex T cell receptor complex receptor complex
B, D, F, H	Enterotoxin type C-3	cation binding ion binding binding metal ion binding small molecule binding toxin activity	-	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, E, G	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, C, E, G	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, C, E, G	IPR003599	Immunoglobulin subtype	Domain
A, C, E, G	IPR013106	Immunoglobulin V-set domain	Domain
A, C, E, G	IPR007110	Immunoglobulin-like domain	Domain
B, D, F, H	IPR006123	Staphylococcal/Streptococcal toxin, beta-grasp domain	Domain
B, D, F, H	IPR006177	Staphylococcal/streptococcal toxin, bacterial	Family
B, D, F, H	IPR006126	Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin, conserved site	Conserved Site
B, D, F, H	IPR016091	Superantigen toxin, C-terminal	Homologous Superfamily
B, D, F, H	IPR006173	Staphylococcal/Streptococcal toxin, OB-fold	Domain
B, D, F, H	IPR013307	Superantigen, staphylococcal/streptococcal toxin, bacterial	Family
B, D, F, H	IPR008992	Enterotoxin	Homologous Superfamily

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.