Annotations: 1SG2

Crystal structure of the periplasmic chaperone Skp

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-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C	d1sg2c1	Membrane and cell surface proteins and peptides	OmpH-like	OmpH-like	OmpH-like	Periplasmic chaperon skp (HlpA)	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d1sg2c2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1sg2b1	Membrane and cell surface proteins and peptides	OmpH-like	OmpH-like	OmpH-like	Periplasmic chaperon skp (HlpA)	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1sg2b2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d1sg2a_	Membrane and cell surface proteins and peptides	OmpH-like	OmpH-like	OmpH-like	Periplasmic chaperon skp (HlpA)	(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)
C	SCOP2B Superfamily	OmpH-like	8040678	3000171	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	OmpH-like	8040678	3000171	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)
C	RecR_HhH	e1sg2C1	A: beta barrels	X: Repetitive alpha hairpins	H: ARM repeat	T: ARM repeat	F: RecR_HhH	ECOD (v294.2)
B	RecR_HhH	e1sg2B1	A: beta barrels	X: Repetitive alpha hairpins	H: ARM repeat	T: ARM repeat	F: RecR_HhH	ECOD (v294.2)
A	OmpH	e1sg2A1	A: few secondary structure elements	X: OmpH-like	H: OmpH-like	T: OmpH-like	F: OmpH	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	3.30.910.20	Alpha Beta	2-Layer Sandwich	Protein Binding, DinI Protein	Chain A	CATH (4.3.0)
B	3.30.910.20	Alpha Beta	2-Layer Sandwich	Protein Binding, DinI Protein	Chain A	CATH (4.3.0)
A	3.30.910.20	Alpha Beta	2-Layer Sandwich	Protein Binding, DinI Protein	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF03938	Outer membrane protein (OmpH-like) (OmpH)	Outer membrane protein (OmpH-like)	This family includes outer membrane proteins such as OmpH among others. Skp (OmpH) has been characterised as a molecular chaperone that interacts with unfolded proteins as they emerge in the periplasm from the Sec translocation machinery [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Seventeen Kilodalton Protein	binding lipid binding lipopolysaccharide binding carbohydrate derivative binding unfolded protein binding protein binding identical protein binding	membrane organization membrane biogenesis membrane assembly cellular component organization cellular component biogenesis cellular component assembly cellular process cellular component organization or biogenesis cell envelope organization Gram-negative-bacterium-type cell outer membrane assembly external encapsulating structure organization biosynthetic process metabolic process primary metabolic process membrane organization membrane biogenesis membrane assembly cellular component organization cellular component biogenesis cellular component assembly cellular process cellular component organization or biogenesis cell envelope organization Gram-negative-bacterium-type cell outer membrane assembly external encapsulating structure organization biosynthetic process metabolic process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation regulation of protein stability biological regulation regulation of biological quality protein stabilization protein folding	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol extracellular region outer membrane-bounded periplasmic space cell envelope periplasmic space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR005632	Chaperone protein Skp	Family
A, B, C	IPR024930	Skp domain superfamily	Homologous Superfamily

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