1EHS

THE STRUCTURE OF ESCHERICHIA COLI HEAT-STABLE ENTEROTOXIN B BY NUCLEAR MAGNETIC RESONANCE AND CIRCULAR DICHROISM

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
Membrane Protein Annotation: OPM

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ehsa_	Small proteins	Toxic hairpin	Heat-stable enterotoxin B	Heat-stable enterotoxin B	Heat-stable enterotoxin B	(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	SCOP2 Family	Heat-stable enterotoxin B	8025757	4003028	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Heat-stable enterotoxin B	8038136	3000185	SCOP2 (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	PF09075	e1ehsA1	A: few secondary structure elements	X: Toxic hairpin	H: Heat-stable enterotoxin B (From Topology)	T: Heat-stable enterotoxin B	F: PF09075	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.10.10	Mainly Alpha	Up-down Bundle	Heat-Stable Enterotoxin B	Heat-stable enterotoxin B	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09075	Heat-stable enterotoxin B, secretory (STb_secrete)	Heat-stable enterotoxin B, secretory	Members of this family assume a helical secondary structure, with two alpha helices forming a disulphide crosslinked alpha-helical hairpin. The disulphide bonds are crucial for the toxic activity of the protein, and are required for maintenance of th ...	Members of this family assume a helical secondary structure, with two alpha helices forming a disulphide crosslinked alpha-helical hairpin. The disulphide bonds are crucial for the toxic activity of the protein, and are required for maintenance of the tertiary structure, and subsequent interaction with the particulate form of guanylate cyclase, increasing cyclic GMP levels within the host intestinal epithelial cells [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	HEAT-STABLE ENTEROTOXIN B	toxin activity	-	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR015160	Heat-stable enterotoxin B, secretory	Family
A	IPR036479	Heat-stable enterotoxin B superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM				Heat-stable enterotoxin B

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.