Annotations: 1L2P

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1l2pa_	Membrane and cell surface proteins and peptides	Single transmembrane helix	F1F0 ATP synthase subunit B, membrane domain	F1F0 ATP synthase subunit B, membrane domain	F1F0 ATP synthase subunit B, membrane 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	SCOP2 Family	F1F0 ATP synthase subunit B membrane domain	8028614	4002142	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	F1F0 ATP synthase subunit B membrane domain	8040993	3000877	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	ATP-synt_B_1	e1l2pA1	A: extended segments	X: F-type ATP synthase subunit b (From Topology)	H: F-type ATP synthase subunit b (From Topology)	T: F-type ATP synthase subunit b	F: ATP-synt_B_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.5.620	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	F1F0 ATP synthase subunit B, membrane domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00430	ATP synthase B/B' CF(0) (ATP-synt_B)	ATP synthase B/B' CF(0)	-	Coiled-coil

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	ATP Synthase B Chain	monoatomic cation transmembrane transporter activity proton transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity proton-transporting ATPase activity, rotational mechanism ATPase-coupled monoatomic cation transmembrane transporter activity ATP-dependent activity active monoatomic ion transmembrane transporter activity ATPase-coupled ion transmembrane transporter activity active transmembrane transporter activity ATPase activity, coupled to transmembrane movement of ions, rotational mechanism inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity monoatomic cation transmembrane transporter activity proton transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity proton-transporting ATPase activity, rotational mechanism ATPase-coupled monoatomic cation transmembrane transporter activity ATP-dependent activity active monoatomic ion transmembrane transporter activity ATPase-coupled ion transmembrane transporter activity active transmembrane transporter activity ATPase activity, coupled to transmembrane movement of ions, rotational mechanism inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity 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 channel 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 nucleobase-containing compound metabolic process ribonucleotide biosynthetic 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 nucleotide biosynthetic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside triphosphate biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic 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 primary metabolic process nucleotide metabolic process ribonucleoside triphosphate biosynthetic process organic cyclic compound metabolic process 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 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 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 purine-containing compound metabolic process organophosphate metabolic process cellular process	cell periphery plasma membrane membrane cellular anatomical entity protein-containing complex ATPase complex proton-transporting two-sector ATPase complex catalytic complex proton-transporting ATP synthase complex membrane protein complex intracellular anatomical structure proton-transporting two-sector ATPase complex, proton-transporting domain proton-transporting ATP synthase complex, coupling factor F(o)

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002146	ATP synthase, F0 complex, subunit b/b', bacterial/chloroplast	Family
A	IPR005864	ATP synthase, F0 complex, subunit b, bacterial	Family
A	IPR028987	F-type ATP synthase subunit B-like, membrane domain superfamily	Homologous Superfamily

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.