Annotations: 1K3S

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1k3sa_	Alpha and beta proteins (a+b)	Secretion chaperone-like	Type III secretory system chaperone-like	Type III secretory system chaperone	Secretion chaperone SigE	(Salmonella enterica ) [TaxId: 28901 ],	SCOPe (2.08)
B	d1k3sb_	Alpha and beta proteins (a+b)	Secretion chaperone-like	Type III secretory system chaperone-like	Type III secretory system chaperone	Secretion chaperone SigE	(Salmonella enterica ) [TaxId: 28901 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Type III secretory system chaperone	8025413	4003372	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Type III secretory system chaperone-like	8037792	3000727	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Type III secretory system chaperone-like	8037792	3000727	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	Chaperone_III	e1k3sA1	A: a+b two layers	X: Type III secretory system chaperone-like	H: Type III secretory system chaperone (From Topology)	T: Type III secretory system chaperone	F: Chaperone_III	ECOD (1.6)
B	Chaperone_III	e1k3sB1	A: a+b two layers	X: Type III secretory system chaperone-like	H: Type III secretory system chaperone (From Topology)	T: Type III secretory system chaperone	F: Chaperone_III	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.1460.10	Alpha Beta	2-Layer Sandwich	Yope Regulator	Chain: A,	CATH (4.3.0)
B	3.30.1460.10	Alpha Beta	2-Layer Sandwich	Yope Regulator	Chain: A,	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF07824	Type III secretion chaperone domain (Chaperone_III)	Type III secretion chaperone domain	Type III secretion chaperones are involved in delivering virulence effector proteins from bacterial pathogens directly into eukaryotic cells. The chaperones may prevent aggregation and degradation of their substrates, may target the effector to the ...	Type III secretion chaperones are involved in delivering virulence effector proteins from bacterial pathogens directly into eukaryotic cells. The chaperones may prevent aggregation and degradation of their substrates, may target the effector to the secretion apparatus, and may ensure a secretion-component unfolded confirmation of their specific substrate. One member of this family, SigE (Swiss:O30917) forms homodimers in crystal. The monomers have a novel fold with an alpha-beta(3)-alpha-beta(2)-alpha topology [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	SigE	-	-	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR013095	Type III secretion system chaperone	Family

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.