1BSN

SOLUTION STRUCTURE OF THE EPSILON SUBUNIT OF THE F1-ATPSYNTHASE FROM ESCHERICHIA COLI AND ORIENTATION OF THE SUBUNIT RELATIVE TO THE BETA SUBUNITS OF THE COMPLEX

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	d1bsna1	All alpha proteins	Long alpha-hairpin	Epsilon subunit of F1F0-ATP synthase C-terminal domain	Epsilon subunit of F1F0-ATP synthase C-terminal domain	Epsilon subunit of F1F0-ATP synthase C-terminal domain	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d1bsna2	All beta proteins	Epsilon subunit of F1F0-ATP synthase N-terminal domain	Epsilon subunit of F1F0-ATP synthase N-terminal domain	Epsilon subunit of F1F0-ATP synthase N-terminal domain	Epsilon subunit of F1F0-ATP synthase N-terminal domain	(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	SCOP2B Superfamily	Epsilon subunit of F1F0-ATP synthase N-terminal domain	8043174	3000182	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Epsilon subunit of F1F0-ATP synthase C-terminal domain	8036325	3000785	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	ATP-synt_DE_N	e1bsnA1	A: beta sandwiches	X: Epsilon subunit of F1F0-ATP synthase-N	H: Epsilon subunit of F1F0-ATP synthase-N (From Topology)	T: Epsilon subunit of F1F0-ATP synthase-N	F: ATP-synt_DE_N	ECOD (1.6)
A	ATP-synt_DE	e1bsnA2	A: alpha bundles	X: Long alpha-hairpin	H: Epsilon subunit of F1F0-ATP synthase C-terminal domain (From Topology)	T: Epsilon subunit of F1F0-ATP synthase C-terminal domain	F: ATP-synt_DE	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.15.10	Mainly Beta	Sandwich	ATP Synthase	domain 1	CATH (4.3.0)
A	1.20.5.440	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	ATP synthase delta/epsilon subunit, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02823	ATP synthase, Delta/Epsilon chain, beta-sandwich domain (ATP-synt_DE_N)	ATP synthase, Delta/Epsilon chain, beta-sandwich domain	Part of the ATP synthase CF(1). These subunits are part of the head unit of the ATP synthase. The subunit is called epsilon in bacteria and delta in mitochondria. In bacteria the delta (D) subunit is equivalent to the mitochondrial Oligomycin sensit ...	Part of the ATP synthase CF(1). These subunits are part of the head unit of the ATP synthase. The subunit is called epsilon in bacteria and delta in mitochondria. In bacteria the delta (D) subunit is equivalent to the mitochondrial Oligomycin sensitive subunit, OSCP (Pfam:PF00213).	Domain
A	PF00401	ATP synthase, Delta/Epsilon chain, long alpha-helix domain (ATP-synt_DE)	ATP synthase, Delta/Epsilon chain, long alpha-helix domain	Part of the ATP synthase CF(1). These subunits are part of the head unit of the ATP synthase. This subunit is called epsilon in bacteria and delta in mitochondria. In bacteria the delta (D) subunit is equivalent to the mitochondrial Oligomycin sens ...	Part of the ATP synthase CF(1). These subunits are part of the head unit of the ATP synthase. This subunit is called epsilon in bacteria and delta in mitochondria. In bacteria the delta (D) subunit is equivalent to the mitochondrial Oligomycin sensitive subunit, OSCP (Pfam:PF00213). This entry includes the epsilon subunit from bacteria and plants.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PROTEIN (EPSILON SUBUNIT)	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding monoatomic cation transmembrane transporter activity proton transmembrane transporter activity monoatomic ion channel activity proton channel activity proton-transporting ATP synthase activity, rotational mechanism monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity catalytic activity ligase activity	nucleotide biosynthetic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process cellular nitrogen compound biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process heterocycle metabolic process purine nucleoside triphosphate biosynthetic process phosphate-containing compound metabolic process organic substance biosynthetic process small molecule metabolic process phosphorus metabolic process nucleotide biosynthetic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process cellular nitrogen compound biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process heterocycle metabolic process purine nucleoside triphosphate biosynthetic process phosphate-containing compound metabolic process organic substance biosynthetic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process proton motive force-driven plasma membrane ATP synthesis cellular metabolic process cellular nitrogen compound metabolic process primary metabolic process nucleotide metabolic process ribonucleoside triphosphate biosynthetic process organic cyclic compound metabolic process biosynthetic process aromatic compound biosynthetic process organophosphate biosynthetic process organic cyclic compound biosynthetic process nucleoside phosphate biosynthetic process metabolic process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process purine nucleotide biosynthetic process ribose phosphate metabolic process ATP metabolic process ATP biosynthetic process cellular biosynthetic process proton motive force-driven ATP synthesis purine nucleotide metabolic process organic substance metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine ribonucleoside triphosphate metabolic process nitrogen compound metabolic process ribonucleoside triphosphate metabolic process carbohydrate derivative biosynthetic process purine nucleoside triphosphate metabolic process organonitrogen compound metabolic process nucleoside triphosphate biosynthetic process nucleobase-containing compound biosynthetic process heterocycle biosynthetic process purine-containing compound metabolic process organophosphate metabolic process cellular process cellular aromatic compound metabolic process	protein-containing complex ATPase complex intracellular anatomical structure catalytic complex proton-transporting ATP synthase complex membrane membrane protein complex cellular anatomical entity proton-transporting two-sector ATPase complex proton-transporting two-sector ATPase complex, catalytic domain proton-transporting ATP synthase complex, catalytic core F(1) cell periphery plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036771	F0F1 ATP synthase delta/epsilon subunit, N-terminal	Homologous Superfamily
A	IPR036794	ATP synthase delta/epsilon subunit, C-terminal domain superfamily	Homologous Superfamily
A	IPR020546	ATP synthase, F1 complex, delta/epsilon subunit, N-terminal	Domain
A	IPR020547	ATP synthase epsilon subunit, C-terminal domain	Domain
A	IPR001469	ATP synthase, F1 complex, delta/epsilon subunit	Family

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.