Annotations: 1QCB

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A [auth D]	d1qcbd_	All beta proteins	OB-fold	Bacterial enterotoxins	Bacterial AB5 toxins, B-subunits	Heat-labile toxin	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
E [auth H]	d1qcbh_	All beta proteins	OB-fold	Bacterial enterotoxins	Bacterial AB5 toxins, B-subunits	Heat-labile toxin	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B [auth E]	d1qcbe_	All beta proteins	OB-fold	Bacterial enterotoxins	Bacterial AB5 toxins, B-subunits	Heat-labile toxin	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C [auth F]	d1qcbf_	All beta proteins	OB-fold	Bacterial enterotoxins	Bacterial AB5 toxins, B-subunits	Heat-labile toxin	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D [auth G]	d1qcbg_	All beta proteins	OB-fold	Bacterial enterotoxins	Bacterial AB5 toxins, B-subunits	Heat-labile toxin	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth D]	SCOP2B Superfamily	Bacterial enterotoxins	8034859	3000434	SCOP2B (2021-05-27)
E [auth H]	SCOP2B Superfamily	Bacterial enterotoxins	8034859	3000434	SCOP2B (2021-05-27)
B [auth E]	SCOP2B Superfamily	Bacterial enterotoxins	8034859	3000434	SCOP2B (2021-05-27)
C [auth F]	SCOP2B Superfamily	Bacterial enterotoxins	8034859	3000434	SCOP2B (2021-05-27)
D [auth G]	SCOP2B Superfamily	Bacterial enterotoxins	8034859	3000434	SCOP2B (2021-05-27)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth D]	PF06453	e1qcbD1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: PF06453	ECOD (1.6)
E [auth H]	PF06453	e1qcbH1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: PF06453	ECOD (1.6)
B [auth E]	PF06453	e1qcbE1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: PF06453	ECOD (1.6)
C [auth F]	PF06453	e1qcbF1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: PF06453	ECOD (1.6)
D [auth G]	PF06453	e1qcbG1	A: beta barrels	X: OB-fold	H: Bacterial enterotoxins (From Topology)	T: Bacterial enterotoxins	F: PF06453	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth D]	2.40.50.50	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.2.0)
E [auth H]	2.40.50.50	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.2.0)
B [auth E]	2.40.50.50	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.2.0)
C [auth F]	2.40.50.50	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.2.0)
D [auth G]	2.40.50.50	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.2.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth D], B [auth E], C [auth F], D [auth G], E [auth H]	PF06453	Type II heat-labile enterotoxin , B subunit (LT-IIB) (LT-IIB)	Type II heat-labile enterotoxin , B subunit (LT-IIB)	Family of B subunits from the type II heat-labile enterotoxin. The B subunits form a pentameric ring, which interacts with one A subunit. Thus, the structural arrangement of type I and type II heat-labile enterotoxins are very similar [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth D], B [auth E], C [auth F], D [auth G], E [auth H]	PROTEIN (HEAT LABILE ENTEROTOXIN TYPE IIB B-PENTAMER)	toxin activity	biological process involved in interspecies interaction between organisms perturbation of signal transduction in another organism modulation of process of another organism	host cellular component host cell part host cell membrane cellular anatomical entity extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth D], B [auth E], C [auth F], D [auth G], E [auth H]	IPR010503	Type II heat-labile enterotoxin, B subunit	Family
A [auth D], B [auth E], C [auth F], D [auth G], E [auth H]	IPR038629	Type II heat-labile enterotoxin, B subunit superfamily	Homologous Superfamily
A [auth D], B [auth E], C [auth F], D [auth G], E [auth H]	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 R01GM133198.