Annotations: 4UX3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e4ux3B1	A: immunoglobulin/albumin-binding domain-like	X: Mitotic chromosome determinant-related protein N-terminal domain	H: Mitotic chromosome determinant-related protein N-terminal domain	T: Rad21_Rec8_N	F:	ECOD (20:10:01)
A		e4ux3A1	A: Helical domain in structural maintenance of chromosomes protein 3	X: Helical domain in structural maintenance of chromosomes protein 3	H: Helical domain in structural maintenance of chromosomes protein 3	T:	F:	ECOD (20:10:01)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02463	RecF/RecN/SMC N terminal domain (SMC_N)	RecF/RecN/SMC N terminal domain	This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. Th ...	This domain is found at the N terminus of SMC proteins. The SMC (structural maintenance of chromosomes) superfamily proteins have ATP-binding domains at the N- and C-termini, and two extended coiled-coil domains separated by a hinge in the middle. The eukaryotic SMC proteins form two kind of heterodimers: the SMC1/SMC3 and the SMC2/SMC4 types. These heterodimers constitute an essential part of higher order complexes, which are involved in chromatin and DNA dynamics [1]. This family also includes the RecF and RecN proteins that are involved in DNA metabolism and recombination.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	MITOTIC CHROMOSOME DETERMINANT-RELATED PROTEIN	protein binding binding kinase binding enzyme binding protein kinase binding chromatin binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process double-strand break repair DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process replication-born double-strand break repair via sister chromatid exchange recombinational repair cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process double-strand break repair DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process replication-born double-strand break repair via sister chromatid exchange recombinational repair metabolic process macromolecule metabolic process double-strand break repair via homologous recombination DNA repair protein acetylation macromolecule modification protein metabolic process protein modification process protein acylation cell division cellular component organization organelle organization mitotic sister chromatid cohesion chromosome organization sister chromatid cohesion cellular component organization or biogenesis cell cycle cell cycle process apoptotic process cell death programmed cell death mitotic nuclear division mitotic chromosome condensation organelle fission sister chromatid segregation mitotic cell cycle nuclear division mitotic cell cycle process chromosome condensation mitotic sister chromatid segregation nuclear chromosome segregation chromosome segregation cell cycle G2/M phase transition G2/M transition of mitotic cell cycle cell cycle phase transition mitotic cell cycle phase transition establishment of mitotic sister chromatid cohesion establishment of sister chromatid cohesion	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle condensed nuclear chromosome nucleus membrane-enclosed lumen intracellular membraneless organelle nuclear chromosome chromosome membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle condensed nuclear chromosome nucleus membrane-enclosed lumen intracellular membraneless organelle nuclear chromosome chromosome intracellular organelle lumen organelle lumen membraneless organelle condensed chromosome nuclear lumen chromosome, centromeric region chromosomal region protein-containing complex mitotic cohesin complex cohesin complex
A	STRUCTURAL MAINTENANCE OF CHROMOSOMES PROTEIN 3	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding double-stranded DNA binding nucleic acid binding protein binding kinase binding enzyme binding protein kinase 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 identical protein binding	cellular component organization organelle organization chromosome organization sister chromatid cohesion cellular process cellular component organization or biogenesis cell cycle meiotic sister chromatid cohesion cell cycle process cellular response to stimulus double-strand break repair response to stimulus DNA recombination primary metabolic process cellular component organization organelle organization chromosome organization sister chromatid cohesion cellular process cellular component organization or biogenesis cell cycle meiotic sister chromatid cohesion cell cycle process cellular response to stimulus double-strand break repair response to stimulus DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process replication-born double-strand break repair via sister chromatid exchange cellular response to stress DNA damage response response to stress recombinational repair metabolic process macromolecule metabolic process double-strand break repair via homologous recombination DNA repair homologous recombination sexual reproduction reproductive process meiotic cell cycle process meiosis I meiotic nuclear division reciprocal homologous recombination meiotic cell cycle organelle fission reciprocal meiotic recombination nuclear division meiosis I cell cycle process cell division mitotic sister chromatid cohesion meiotic chromosome segregation synaptonemal complex assembly cellular component biogenesis cellular component assembly synaptonemal complex organization chromosome segregation chromosome organization involved in meiotic cell cycle homologous chromosome pairing at meiosis nuclear chromosome segregation homologous chromosome segregation establishment of meiotic sister chromatid cohesion establishment of sister chromatid cohesion cell cycle G2/M phase transition mitotic cell cycle process G2/M transition of mitotic cell cycle cell cycle phase transition mitotic cell cycle mitotic cell cycle phase transition establishment of mitotic sister chromatid cohesion	intracellular organelle protein-containing complex cellular anatomical structure intracellular anatomical structure organelle membraneless organelle intracellular membraneless organelle chromosome meiotic cohesin complex cohesin complex mitotic cohesin complex membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR039781	Rad21/Rec8-like protein	Family
B	IPR006910	Rad21/Rec8-like protein, N-terminal	Domain
B	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
B	IPR023093	ScpA-like, C-terminal	Homologous Superfamily
B	IPR006909	Rad21/Rec8-like protein, C-terminal, eukaryotic	Domain
A	IPR041741	Structural maintenance of chromosomes 3, ABC domain, eukaryotic	Domain
A	IPR010935	SMCs flexible hinge	Domain
A	IPR036277	SMCs flexible hinge superfamily	Homologous Superfamily
A	IPR003395	RecF/RecN/SMC, N-terminal	Domain
A	IPR024704	Structural maintenance of chromosomes protein	Family
A	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.