Annotations: 4MN4

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth C]	SCOP2B Superfamily	Smc hinge domain-like	8018605	3001748	SCOP2B (2022-06-29)
C [auth D]	SCOP2B Superfamily	Smc hinge domain-like	8018605	3001748	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_gyraseA_C	e4mn4A1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-pinwheel (From Topology)	T: beta-pinwheel	F: DNA_gyraseA_C	ECOD (1.6)
D [auth B]	DNA_gyraseA_C	e4mn4B1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-pinwheel (From Topology)	T: beta-pinwheel	F: DNA_gyraseA_C	ECOD (1.6)
B [auth C]	MukB_hinge	e4mn4C1	A: a+b duplicates or obligate multimers	X: Smc hinge domain (From Topology)	H: Smc hinge domain (From Topology)	T: Smc hinge domain	F: MukB_hinge	ECOD (1.6)
C [auth D]	MukB_hinge	e4mn4D2	A: a+b duplicates or obligate multimers	X: Smc hinge domain (From Topology)	H: Smc hinge domain (From Topology)	T: Smc hinge domain	F: MukB_hinge	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth C]	1.20.5.420	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Immunoglobulin FC, subunit C	CATH (4.3.0)
B [auth C]	3.30.70.3500	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	MukB, hinge domain	CATH (4.3.0)
C [auth D]	1.20.5.420	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Immunoglobulin FC, subunit C	CATH (4.3.0)
C [auth D]	3.30.70.3500	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	MukB, hinge domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D [auth B]	PF03989	DNA gyrase C-terminal domain, beta-propeller (DNA_gyraseA_C)	DNA gyrase C-terminal domain, beta-propeller	-	Repeat
B [auth C], C [auth D]	PF16330	MukB hinge domain (MukB_hinge)	MukB hinge domain	The hinge domain of chromosome partition protein MukB is responsible for dimerisation and is also involved in protein-DNA interactions and conformational flexibility [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D [auth B]	DNA topoisomerase 4 subunit A	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	plasmid partitioning cellular process plasmid maintenance cell cycle chromosome segregation cell cycle process cellular component organization organelle organization chromosome organization sister chromatid cohesion cellular component organization or biogenesis primary metabolic process DNA conformation change DNA metabolic process plasmid partitioning cellular process plasmid maintenance cell cycle chromosome segregation cell cycle process cellular component organization organelle organization chromosome organization sister chromatid cohesion cellular component organization or biogenesis primary metabolic process DNA conformation change DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process DNA topological change metabolic process macromolecule metabolic process	intracellular organelle intracellular anatomical structure organelle intracellular non-membrane-bounded organelle chromosome cellular anatomical entity non-membrane-bounded organelle cytoplasm cytosol DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) complex protein-containing complex catalytic complex cell periphery extrinsic component of plasma membrane intracellular organelle intracellular anatomical structure organelle intracellular non-membrane-bounded organelle chromosome cellular anatomical entity non-membrane-bounded organelle cytoplasm cytosol DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) complex protein-containing complex catalytic complex cell periphery extrinsic component of plasma membrane membrane plasma membrane extrinsic component of membrane
B [auth C], C [auth D]	Chromosome partition protein MukB	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 pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity guanyl nucleotide binding GTP binding guanyl ribonucleotide binding identical protein binding protein binding	nucleobase-containing compound metabolic process DNA replication metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular process cell division cell cycle chromosome segregation cell cycle process cellular component organization organelle organization nucleobase-containing compound metabolic process DNA replication metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular process cell division cell cycle chromosome segregation cell cycle process cellular component organization organelle organization chromosome condensation chromosome organization cellular component organization or biogenesis sister chromatid cohesion	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol nucleoid intracellular organelle protein-containing complex organelle intracellular non-membrane-bounded organelle chromosome condensin complex non-membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D [auth B]	IPR035516	DNA gyrase/topoisomerase IV, subunit A, C-terminal	Homologous Superfamily
A, D [auth B]	IPR050220	Type II DNA Topoisomerases	Family
A, D [auth B]	IPR013760	DNA topoisomerase, type IIA-like domain superfamily	Homologous Superfamily
A, D [auth B]	IPR013757	DNA topoisomerase, type IIA, alpha-helical domain superfamily	Homologous Superfamily
A, D [auth B]	IPR013758	DNA topoisomerase, type IIA, domain A, alpha-beta	Homologous Superfamily
A, D [auth B]	IPR005742	DNA topoisomerase IV, subunit A, Gram-negative	Family
A, D [auth B]	IPR006691	DNA gyrase/topoisomerase IV, subunit A, C-terminal repeat	Repeat
A, D [auth B]	IPR002205	DNA topoisomerase, type IIA, domain A	Domain
B [auth C], C [auth D]	IPR042501	MukB, hinge domain superfamily	Homologous Superfamily
B [auth C], C [auth D]	IPR050308	Chromosome partition protein MukB/SMC	Family
B [auth C], C [auth D]	IPR007406	MukB, N-terminal domain	Domain
B [auth C], C [auth D]	IPR032520	MukB, hinge domain	Domain
B [auth C], C [auth D]	IPR012090	Chromosome partition protein MukB	Family
B [auth C], C [auth D]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

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.