Annotations: 4Z3O

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Toprim domain-like	8090034	3000737	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Toprim domain-like	8090034	3000737	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	DNA_topoisoIV_1st	e4z3oA2	A: alpha arrays	X: HTH	H: HTH	T: winged	F: DNA_topoisoIV_1st	ECOD (1.6)
A	DNA_topoisoIV_3rd	e4z3oA4	A: alpha bundles	X: alpha-helical domain in type II DNA topoisomerase (From Topology)	H: alpha-helical domain in type II DNA topoisomerase (From Topology)	T: alpha-helical domain in type II DNA topoisomerase	F: DNA_topoisoIV_3rd	ECOD (1.6)
A	DNA_topoisoIV_2nd	e4z3oA1	A: a+b two layers	X: a+b domain in type II DNA topoisomerase (From Topology)	H: a+b domain in type II DNA topoisomerase (From Topology)	T: a+b domain in type II DNA topoisomerase	F: DNA_topoisoIV_2nd	ECOD (1.6)
A	DNA_gyraseB_C	e4z3oA5	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: Toprim domain	F: DNA_gyraseB_C	ECOD (1.6)
B	DNA_topoisoIV_1st	e4z3oB3	A: alpha arrays	X: HTH	H: HTH	T: winged	F: DNA_topoisoIV_1st	ECOD (1.6)
B	DNA_topoisoIV_3rd	e4z3oB2	A: alpha bundles	X: alpha-helical domain in type II DNA topoisomerase (From Topology)	H: alpha-helical domain in type II DNA topoisomerase (From Topology)	T: alpha-helical domain in type II DNA topoisomerase	F: DNA_topoisoIV_3rd	ECOD (1.6)
B	DNA_topoisoIV_2nd	e4z3oB4	A: a+b two layers	X: a+b domain in type II DNA topoisomerase (From Topology)	H: a+b domain in type II DNA topoisomerase (From Topology)	T: a+b domain in type II DNA topoisomerase	F: DNA_topoisoIV_2nd	ECOD (1.6)
B	DNA_gyraseB_C	e4z3oB5	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: Toprim domain	F: DNA_gyraseB_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.670	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	3.90.199.10	Alpha Beta	Alpha-Beta Complex	Topoisomerase II	domain 5	CATH (4.3.0)
A	1.10.268.10	Mainly Alpha	Orthogonal Bundle	Topoisomerase	domain 3	CATH (4.3.0)
B	3.40.50.670	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
B	3.90.199.10	Alpha Beta	Alpha-Beta Complex	Topoisomerase II	domain 5	CATH (4.3.0)
B	1.10.268.10	Mainly Alpha	Orthogonal Bundle	Topoisomerase	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01751	Toprim domain (Toprim)	Toprim domain	-	Family
A, B	PF00521	DNA gyrase/topoisomerase IV, subunit A (DNA_topoisoIV)	DNA gyrase/topoisomerase IV, subunit A	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	DNA topoisomerase 4 subunit B,ParE30-ParC55 fused topo IV from S. pneumoniae	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 DNA binding nucleic acid binding ATP-dependent activity, acting on DNA isomerase activity catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid DNA topoisomerase activity DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity catalytic activity ATP-dependent activity cation binding metal ion binding	cellular process cell cycle chromosome segregation cell cycle process chromosome organization primary metabolic process DNA conformation change DNA metabolic process nucleic acid metabolic process cellular component organization nucleobase-containing compound metabolic process DNA topological change organelle organization metabolic process cellular process cell cycle chromosome segregation cell cycle process chromosome organization primary metabolic process DNA conformation change DNA metabolic process nucleic acid metabolic process cellular component organization nucleobase-containing compound metabolic process DNA topological change organelle organization metabolic process cellular component organization or biogenesis macromolecule metabolic process	intracellular organelle intracellular anatomical structure organelle intracellular non-membrane-bounded organelle chromosome cellular anatomical entity non-membrane-bounded organelle cell periphery extrinsic component of plasma membrane membrane plasma membrane extrinsic component of membrane
C [auth E]	E-site DNA	-	-	-
D [auth F]	E-site DNA	-	-	-
E [auth G]	E-site DNA	-	-	-
F [auth H]	E-site DNA	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR018522	DNA topoisomerase, type IIA, conserved site	Conserved Site
A, B	IPR013506	DNA topoisomerase, type IIA, subunit B, domain 2	Domain
A, B	IPR013760	DNA topoisomerase, type IIA-like domain superfamily	Homologous Superfamily
A, B	IPR036890	Histidine kinase/HSP90-like ATPase superfamily	Homologous Superfamily
A, B	IPR006171	TOPRIM domain	Domain
A, B	IPR000565	DNA topoisomerase, type IIA, subunit B	Family
A, B	IPR003594	Histidine kinase/HSP90-like ATPase domain	Domain
A, B	IPR013759	DNA topoisomerase, type IIA, subunit B, C-terminal	Homologous Superfamily
A, B	IPR020568	Ribosomal protein uS5 domain 2-type superfamily	Homologous Superfamily
A, B	IPR001241	DNA topoisomerase, type IIA	Family
A, B	IPR005740	DNA topoisomerase 4 subunit B, Firmicutes/Mollicutes	Family
A, B	IPR002288	DNA gyrase B subunit, C-terminal	Domain
A, B	IPR014721	Small ribosomal subunit protein uS5 domain 2-type fold, subgroup	Homologous Superfamily
A, B	IPR035516	DNA gyrase/topoisomerase IV, subunit A, C-terminal	Homologous Superfamily
A, B	IPR050220	Type II DNA Topoisomerases	Family
A, B	IPR013760	DNA topoisomerase, type IIA-like domain superfamily	Homologous Superfamily
A, B	IPR013757	DNA topoisomerase, type IIA, alpha-helical domain superfamily	Homologous Superfamily
A, B	IPR013758	DNA topoisomerase, type IIA, domain A, alpha-beta	Homologous Superfamily
A, B	IPR006691	DNA gyrase/topoisomerase IV, subunit A, C-terminal repeat	Repeat
A, B	IPR005741	DNA topoisomerase IV subunit A, Gram-positive	Family
A, B	IPR002205	DNA topoisomerase, type IIA, domain A	Domain