5U1S

Crystal structure of the Saccharomyces cerevisiae separase-securin complex at 3.0 angstrom resolution

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	UNK_F_TYPE	e5u1sA3	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: UNK_F_TYPE	ECOD (1.6)
A	Peptidase_C50_C	e5u1sA2	A: a/b three-layered sandwiches	X: Caspase-like (From Topology)	H: Caspase-like (From Topology)	T: Caspase-like	F: Peptidase_C50_C	ECOD (1.6)
A	Peptidase_C50_N	e5u1sA1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Separase pseudo-protease domain (PPD) (From Topology)	T: Separase pseudo-protease domain (PPD)	F: Peptidase_C50_N	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03568	Peptidase family C50 (Peptidase_C50)	Peptidase family C50	-	Family
B	PF04856	Securin sister-chromatid separation inhibitor (Securin)	Securin sister-chromatid separation inhibitor	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Separin	cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity catalytic activity endopeptidase activity	meiotic chromosome segregation regulation of cellular process regulation of cell cycle phase transition regulation of reproductive process positive regulation of meiotic chromosome separation regulation of metaphase/anaphase transition of meiotic cell cycle cell cycle chromosome segregation regulation of biological process regulation of meiotic cell cycle regulation of cell cycle process positive regulation of meiotic cell cycle phase transition meiotic cell cycle sister chromatid segregation meiotic chromosome segregation regulation of cellular process regulation of cell cycle phase transition regulation of reproductive process positive regulation of meiotic chromosome separation regulation of metaphase/anaphase transition of meiotic cell cycle cell cycle chromosome segregation regulation of biological process regulation of meiotic cell cycle regulation of cell cycle process positive regulation of meiotic cell cycle phase transition meiotic cell cycle sister chromatid segregation regulation of chromosome organization regulation of organelle organization regulation of chromosome separation regulation of chromosome segregation regulation of metaphase/anaphase transition of cell cycle regulation of cellular component organization sexual reproduction reproductive process positive regulation of biological process regulation of meiotic chromosome separation cell cycle phase transition positive regulation of metaphase/anaphase transition of meiotic cell cycle meiotic cell cycle process cellular component organization positive regulation of metaphase/anaphase transition of cell cycle positive regulation of cell cycle process meiotic nuclear division metaphase/anaphase transition of meiotic cell cycle cellular component organization or biogenesis regulation of cell cycle positive regulation of cellular process cell cycle process positive regulation of reproductive process meiotic chromosome separation organelle fission regulation of meiotic cell cycle phase transition biological regulation chromosome organization positive regulation of meiotic cell cycle positive regulation of cell cycle nuclear division organelle organization meiotic cell cycle phase transition chromosome separation regulation of sister chromatid segregation positive regulation of cell cycle phase transition nuclear chromosome segregation positive regulation of chromosome separation cellular process metaphase/anaphase transition of cell cycle exit from mitosis mitotic cell cycle regulation of mitotic cell cycle positive regulation of mitotic cell cycle phase transition positive regulation of exit from mitosis positive regulation of mitotic cell cycle mitotic nuclear division regulation of mitotic cell cycle phase transition mitotic cell cycle process regulation of exit from mitosis mitotic cell cycle phase transition apoptotic process cell death programmed cell death negative regulation of protein dephosphorylation protein dephosphorylation regulation of protein modification process negative regulation of biological process negative regulation of phosphate metabolic process negative regulation of cellular metabolic process regulation of primary metabolic process organic substance metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process negative regulation of cellular process negative regulation of protein modification process negative regulation of dephosphorylation protein metabolic process protein modification process phosphorus metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process organonitrogen compound metabolic process regulation of dephosphorylation regulation of protein dephosphorylation dephosphorylation cellular metabolic process negative regulation of metabolic process regulation of protein metabolic process primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process macromolecule modification negative regulation of phosphorus metabolic process metabolic process regulation of phosphorus metabolic process macromolecule metabolic process regulation of metabolic process mitotic spindle elongation spindle elongation microtubule cytoskeleton organization mitotic sister chromatid segregation regulation of spindle elongation microtubule cytoskeleton organization involved in mitosis spindle organization regulation of microtubule-based process mitotic spindle organization regulation of mitotic sister chromatid segregation regulation of mitotic spindle elongation microtubule-based process cytoskeleton organization proteolysis protein localization regulation of localization cellular localization regulation of protein localization regulation of protein localization to nucleus negative regulation of protein localization to nucleolus protein localization to nucleus negative regulation of protein localization to nucleus localization protein localization to nucleolus regulation of cellular localization protein localization to organelle cellular macromolecule localization macromolecule localization negative regulation of protein localization regulation of protein localization to nucleolus	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle protein-containing complex catalytic complex peptidase complex endopeptidase complex separase-securin complex cytoskeleton membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle protein-containing complex catalytic complex peptidase complex endopeptidase complex separase-securin complex cytoskeleton spindle intracellular non-membrane-bounded organelle microtubule cytoskeleton non-membrane-bounded organelle mitotic spindle microtubule organizing center spindle pole body mitotic spindle pole body nucleus
B	Securin	protein binding binding enzyme binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process meiotic chromosome segregation regulation of cellular process regulation of cell cycle phase transition regulation of reproductive process positive regulation of meiotic chromosome separation regulation of metaphase/anaphase transition of meiotic cell cycle cell cycle chromosome segregation cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process meiotic chromosome segregation regulation of cellular process regulation of cell cycle phase transition regulation of reproductive process positive regulation of meiotic chromosome separation regulation of metaphase/anaphase transition of meiotic cell cycle cell cycle chromosome segregation regulation of biological process regulation of meiotic cell cycle regulation of cell cycle process positive regulation of meiotic cell cycle phase transition meiotic cell cycle sister chromatid segregation regulation of chromosome organization regulation of organelle organization regulation of chromosome separation regulation of chromosome segregation regulation of metaphase/anaphase transition of cell cycle regulation of cellular component organization sexual reproduction reproductive process positive regulation of biological process regulation of meiotic chromosome separation cell cycle phase transition positive regulation of metaphase/anaphase transition of meiotic cell cycle meiotic cell cycle process cellular component organization positive regulation of metaphase/anaphase transition of cell cycle positive regulation of cell cycle process meiotic nuclear division metaphase/anaphase transition of meiotic cell cycle cellular component organization or biogenesis regulation of cell cycle positive regulation of cellular process cell cycle process positive regulation of reproductive process meiotic chromosome separation organelle fission regulation of meiotic cell cycle phase transition biological regulation chromosome organization positive regulation of meiotic cell cycle positive regulation of cell cycle nuclear division organelle organization meiotic cell cycle phase transition chromosome separation regulation of sister chromatid segregation positive regulation of cell cycle phase transition nuclear chromosome segregation positive regulation of chromosome separation metaphase/anaphase transition of cell cycle protein localization localization cellular localization cellular macromolecule localization macromolecule localization cell division meiosis I meiosis I cell cycle process DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process recombinational repair metabolic process macromolecule metabolic process DNA repair mitotic nuclear division mitotic cell cycle mitotic cell cycle process mitotic sister chromatid segregation negative regulation of exit from mitosis negative regulation of biological process negative regulation of cell cycle exit from mitosis negative regulation of mitotic cell cycle regulation of mitotic cell cycle negative regulation of cellular process negative regulation of cell cycle phase transition negative regulation of mitotic cell cycle phase transition negative regulation of cell cycle process regulation of mitotic cell cycle phase transition regulation of exit from mitosis mitotic cell cycle phase transition	protein-containing complex catalytic complex peptidase complex endopeptidase complex separase-securin complex intracellular organelle intracellular anatomical structure cytoskeleton spindle organelle intracellular non-membrane-bounded organelle cellular anatomical entity microtubule cytoskeleton non-membrane-bounded organelle protein-containing complex catalytic complex peptidase complex endopeptidase complex separase-securin complex intracellular organelle intracellular anatomical structure cytoskeleton spindle organelle intracellular non-membrane-bounded organelle cellular anatomical entity microtubule cytoskeleton non-membrane-bounded organelle cytoplasm membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005314	Peptidase C50, separase	Family
A	IPR030397	SEPARIN core domain	Domain
B	IPR006940	Securin sister-chromatid separation inhibitor	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.