4AEZ

Crystal Structure of Mitotic Checkpoint Complex

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d4aezb_	Alpha and beta proteins (a+b)	The spindle assembly checkpoint protein mad2	The spindle assembly checkpoint protein mad2	automated matches	automated matches	FISSION YEAST (Schizosaccharomyces pombe ) [TaxId: 4896 ],	SCOPe (2.08)
E	d4aeze_	Alpha and beta proteins (a+b)	The spindle assembly checkpoint protein mad2	The spindle assembly checkpoint protein mad2	automated matches	automated matches	FISSION YEAST (Schizosaccharomyces pombe ) [TaxId: 4896 ],	SCOPe (2.08)
H	d4aezh_	Alpha and beta proteins (a+b)	The spindle assembly checkpoint protein mad2	The spindle assembly checkpoint protein mad2	automated matches	automated matches	FISSION YEAST (Schizosaccharomyces pombe ) [TaxId: 4896 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Cell division cycle protein 20 homolog (CDC20)-like	8084713	4005944	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	WD40 repeat-like	8106389	3001694	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	WD40 repeat-like	8106389	3001694	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	WD40 repeat-like	8106389	3001694	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	ANAPC4_WD40_8	e4aezA1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: ANAPC4_WD40_8	ECOD (1.6)
D	ANAPC4_WD40_6	e4aezD1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: ANAPC4_WD40_6	ECOD (1.6)
G	ANAPC4_WD40_1	e4aezG1	A: beta duplicates or obligate multimers	X: beta-propeller-like	H: beta-propeller	T: 7-bladed	F: ANAPC4_WD40_1	ECOD (1.6)
B	HORMA	e4aezB1	A: a+b two layers	X: The spindle assembly checkpoint protein mad2 (From Topology)	H: The spindle assembly checkpoint protein mad2 (From Topology)	T: The spindle assembly checkpoint protein mad2	F: HORMA	ECOD (1.6)
E	HORMA	e4aezE2	A: a+b two layers	X: The spindle assembly checkpoint protein mad2 (From Topology)	H: The spindle assembly checkpoint protein mad2 (From Topology)	T: The spindle assembly checkpoint protein mad2	F: HORMA	ECOD (1.6)
H	HORMA	e4aezH1	A: a+b two layers	X: The spindle assembly checkpoint protein mad2 (From Topology)	H: The spindle assembly checkpoint protein mad2 (From Topology)	T: The spindle assembly checkpoint protein mad2	F: HORMA	ECOD (1.6)
C	Mad3_BUB1_I	e4aezC1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: Mad3_BUB1_I	ECOD (1.6)
F	Mad3_BUB1_I	e4aezF2	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: Mad3_BUB1_I	ECOD (1.6)
I	Mad3_BUB1_I	e4aezI2	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: Mad3_BUB1_I	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.130.10.10	Mainly Beta	7 Propeller	Methylamine Dehydrogenase	Chain H	CATH (4.3.0)
D	2.130.10.10	Mainly Beta	7 Propeller	Methylamine Dehydrogenase	Chain H	CATH (4.3.0)
G	2.130.10.10	Mainly Beta	7 Propeller	Methylamine Dehydrogenase	Chain H	CATH (4.3.0)
B	3.30.900.10	Alpha Beta	2-Layer Sandwich	Cell Cycle, Spindle Assembly Checkpoint Protein	Chain A	CATH (4.3.0)
E	3.30.900.10	Alpha Beta	2-Layer Sandwich	Cell Cycle, Spindle Assembly Checkpoint Protein	Chain A	CATH (4.3.0)
H	3.30.900.10	Alpha Beta	2-Layer Sandwich	Cell Cycle, Spindle Assembly Checkpoint Protein	Chain A	CATH (4.3.0)
C	1.25.40.430	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)
F	1.25.40.430	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)
I	1.25.40.430	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D, G	PF00400	WD domain, G-beta repeat (WD40)	WD domain, G-beta repeat	-	Repeat
B, E, H	PF02301	HORMA domain (HORMA)	HORMA domain	The HORMA (for Hop1p, Rev7p and MAD2) domain has been suggested to recognise chromatin states that result from DNA adducts, double stranded breaks or non-attachment to the spindle and acts as an adaptor that recruits other proteins. MAD2 is a spindle ...	The HORMA (for Hop1p, Rev7p and MAD2) domain has been suggested to recognise chromatin states that result from DNA adducts, double stranded breaks or non-attachment to the spindle and acts as an adaptor that recruits other proteins. MAD2 is a spindle checkpoint protein which prevents progression of the cell cycle upon detection of a defect in mitotic spindle integrity.	Domain
C, F, I	PF08311	Mad3/BUB1 homology region 1 (Mad3_BUB1_I)	Mad3/BUB1 homology region 1	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D, G	WD REPEAT-CONTAINING PROTEIN SLP1	protein-containing complex binding anaphase-promoting complex binding binding enzyme regulator activity ubiquitin ligase activator activity enzyme activator activity ubiquitin-protein transferase regulator activity molecular function activator activity molecular function regulator activity ubiquitin-protein transferase activator activity	positive regulation of proteasomal protein catabolic process catabolic process regulation of cellular process regulation of anaphase-promoting complex-dependent catabolic process proteolysis involved in protein catabolic process positive regulation of protein metabolic process positive regulation of biological process proteasome-mediated ubiquitin-dependent protein catabolic process macromolecule catabolic process regulation of ubiquitin-dependent protein catabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of proteolysis involved in protein catabolic process regulation of proteolysis positive regulation of ubiquitin-dependent protein catabolic process positive regulation of proteasomal protein catabolic process catabolic process regulation of cellular process regulation of anaphase-promoting complex-dependent catabolic process proteolysis involved in protein catabolic process positive regulation of protein metabolic process positive regulation of biological process proteasome-mediated ubiquitin-dependent protein catabolic process macromolecule catabolic process regulation of ubiquitin-dependent protein catabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of proteolysis involved in protein catabolic process regulation of proteolysis positive regulation of ubiquitin-dependent protein catabolic process modification-dependent macromolecule catabolic process proteolysis positive regulation of macromolecule metabolic process protein metabolic process positive regulation of cellular process regulation of biological process regulation of protein metabolic process biological regulation primary metabolic process proteasomal protein catabolic process protein catabolic process regulation of macromolecule metabolic process regulation of catabolic process positive regulation of protein catabolic process positive regulation of proteolysis involved in protein catabolic process positive regulation of catabolic process regulation of proteasomal ubiquitin-dependent protein catabolic process modification-dependent protein catabolic process regulation of proteasomal protein catabolic process positive regulation of proteolysis positive regulation of anaphase-promoting complex-dependent catabolic process anaphase-promoting complex-dependent catabolic process ubiquitin-dependent protein catabolic process metabolic process cellular process positive regulation of proteasomal ubiquitin-dependent protein catabolic process macromolecule metabolic process regulation of metabolic process regulation of protein catabolic process regulation of chromosome segregation regulation of cellular component organization sexual reproduction reproductive process cell cycle phase transition meiotic cell cycle process cellular component organization metaphase/anaphase transition of meiotic cell cycle cell cycle cellular component organization or biogenesis regulation of cell cycle chromosome segregation cell cycle process regulation of cell cycle process meiotic cell cycle chromosome organization sister chromatid segregation regulation of chromosome organization regulation of organelle organization organelle organization meiotic cell cycle phase transition meiosis I cell cycle process metaphase/anaphase transition of meiosis I regulation of sister chromatid segregation nuclear chromosome segregation metaphase/anaphase transition of cell cycle positive regulation of organelle organization regulation of cell cycle phase transition regulation of mitotic nuclear division positive regulation of mitotic nuclear division positive regulation of mitotic metaphase/anaphase transition positive regulation of mitotic cell cycle phase transition mitotic sister chromatid separation positive regulation of nuclear division regulation of mitotic cell cycle phase transition mitotic cell cycle process regulation of chromosome separation regulation of metaphase/anaphase transition of cell cycle regulation of mitotic sister chromatid separation positive regulation of cellular component organization regulation of mitotic metaphase/anaphase transition mitotic cell cycle regulation of mitotic cell cycle positive regulation of metaphase/anaphase transition of cell cycle mitotic sister chromatid segregation positive regulation of cell cycle process positive regulation of mitotic cell cycle mitotic nuclear division organelle fission positive regulation of cell cycle nuclear division chromosome separation positive regulation of cell cycle phase transition positive regulation of mitotic sister chromatid separation regulation of nuclear division metaphase/anaphase transition of mitotic cell cycle positive regulation of chromosome separation mitotic cell cycle phase transition cell division metaphase/anaphase transition of meiosis II meiosis II cell cycle process cellular response to stimulus response to stimulus negative regulation of biological process spindle checkpoint signaling negative regulation of cell cycle intracellular signal transduction negative regulation of mitotic cell cycle cell communication negative regulation of mitotic sister chromatid segregation negative regulation of chromosome organization negative regulation of cell cycle phase transition mitotic spindle checkpoint signaling signal transduction negative regulation of sister chromatid segregation mitotic spindle assembly checkpoint signaling negative regulation of cellular component organization regulation of mitotic sister chromatid segregation negative regulation of mitotic nuclear division signaling spindle assembly checkpoint signaling negative regulation of cellular process negative regulation of mitotic metaphase/anaphase transition negative regulation of chromosome separation negative regulation of mitotic cell cycle phase transition negative regulation of cell cycle process cell cycle checkpoint signaling mitotic cell cycle checkpoint signaling negative regulation of chromosome segregation negative regulation of nuclear division negative regulation of organelle organization negative regulation of mitotic sister chromatid separation negative regulation of metaphase/anaphase transition of cell cycle	intracellular anatomical structure intracellular membraneless organelle chromosome chromosomal region kinetochore intracellular organelle cellular anatomical structure organelle membraneless organelle chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome membrane-bounded organelle intracellular anatomical structure intracellular membraneless organelle chromosome chromosomal region kinetochore intracellular organelle cellular anatomical structure organelle membraneless organelle chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome membrane-bounded organelle protein-containing complex ubiquitin ligase complex catalytic complex nucleus nuclear protein-containing complex transferase complex intracellular membrane-bounded organelle anaphase-promoting complex cullin-RING ubiquitin ligase complex nuclear ubiquitin ligase complex intracellular protein-containing complex cell division site mitotic checkpoint complex mitotic spindle cytoskeleton spindle microtubule cytoskeleton microtubule organizing center spindle pole body mitotic spindle pole body
B, E, H	MITOTIC SPINDLE CHECKPOINT COMPONENT MAD2	protein-containing complex binding anaphase-promoting complex binding binding	cellular process cell division cellular response to stimulus regulation of cellular process regulation of cell cycle phase transition response to stimulus negative regulation of biological process spindle checkpoint signaling negative regulation of cell cycle regulation of mitotic nuclear division intracellular signal transduction negative regulation of mitotic cell cycle cell communication negative regulation of mitotic sister chromatid segregation cellular process cell division cellular response to stimulus regulation of cellular process regulation of cell cycle phase transition response to stimulus negative regulation of biological process spindle checkpoint signaling negative regulation of cell cycle regulation of mitotic nuclear division intracellular signal transduction negative regulation of mitotic cell cycle cell communication negative regulation of mitotic sister chromatid segregation negative regulation of chromosome organization negative regulation of cell cycle phase transition mitotic spindle checkpoint signaling signal transduction cell cycle mitotic sister chromatid separation chromosome segregation negative regulation of sister chromatid segregation mitotic spindle assembly checkpoint signaling regulation of biological process negative regulation of cellular component organization regulation of cell cycle process sister chromatid segregation regulation of chromosome organization regulation of organelle organization regulation of mitotic cell cycle phase transition regulation of mitotic sister chromatid segregation mitotic cell cycle process regulation of chromosome separation negative regulation of mitotic nuclear division regulation of chromosome segregation regulation of cellular component organization regulation of mitotic sister chromatid separation regulation of metaphase/anaphase transition of cell cycle signaling spindle assembly checkpoint signaling cell cycle phase transition regulation of mitotic metaphase/anaphase transition mitotic cell cycle cellular component organization regulation of mitotic cell cycle negative regulation of cellular process mitotic sister chromatid segregation negative regulation of mitotic metaphase/anaphase transition cellular component organization or biogenesis regulation of cell cycle negative regulation of chromosome separation cell cycle process mitotic nuclear division negative regulation of mitotic cell cycle phase transition organelle fission biological regulation chromosome organization negative regulation of cell cycle process cell cycle checkpoint signaling mitotic cell cycle checkpoint signaling organelle organization nuclear division negative regulation of chromosome segregation negative regulation of nuclear division negative regulation of organelle organization chromosome separation regulation of sister chromatid segregation negative regulation of mitotic sister chromatid separation regulation of nuclear division negative regulation of metaphase/anaphase transition of cell cycle nuclear chromosome segregation metaphase/anaphase transition of mitotic cell cycle metaphase/anaphase transition of cell cycle mitotic cell cycle phase transition meiotic chromosome segregation regulation of reproductive process regulation of meiosis I meiotic spindle assembly checkpoint signaling regulation of metaphase/anaphase transition of meiotic cell cycle regulation of meiotic cell cycle meiotic cell cycle negative regulation of meiotic chromosome separation meiosis I cell cycle process negative regulation of meiotic cell cycle phase transition negative regulation of meiotic cell cycle meiotic spindle checkpoint signaling sexual reproduction reproductive process regulation of meiotic chromosome separation negative regulation of metaphase/anaphase transition of meiotic cell cycle meiosis I spindle assembly checkpoint signaling meiotic cell cycle process meiosis I negative regulation of meiosis I meiotic nuclear division metaphase/anaphase transition of meiotic cell cycle negative regulation of meiotic nuclear division meiotic chromosome separation regulation of meiotic cell cycle phase transition meiotic cell cycle checkpoint signaling regulation of meiotic nuclear division meiotic cell cycle phase transition negative regulation of reproductive process	intracellular anatomical structure intracellular membraneless organelle chromosome chromosomal region kinetochore intracellular organelle cellular anatomical structure organelle membraneless organelle chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome membrane-bounded organelle intracellular anatomical structure intracellular membraneless organelle chromosome chromosomal region kinetochore intracellular organelle cellular anatomical structure organelle membraneless organelle chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome membrane-bounded organelle protein-containing complex nucleus nuclear protein-containing complex mitotic checkpoint complex intracellular membrane-bounded organelle membrane-enclosed lumen intracellular organelle lumen organelle lumen nuclear periphery nuclear lumen cytoplasm microtubule organizing center cytoskeleton spindle pole body microtubule cytoskeleton mitotic spindle pole body nucleoplasm chromatin polymeric cytoskeletal fiber mitotic spindle spindle spindle microtubule mitotic spindle microtubule supramolecular fiber microtubule supramolecular polymer
C, F, I	MITOTIC SPINDLE CHECKPOINT COMPONENT MAD3	enzyme regulator activity molecular function inhibitor activity ubiquitin-protein transferase regulator activity ubiquitin-protein transferase inhibitor activity ubiquitin ligase inhibitor activity molecular function regulator activity enzyme inhibitor activity protein-containing complex binding anaphase-promoting complex binding binding	cellular response to stimulus regulation of cellular process regulation of cell cycle phase transition response to stimulus negative regulation of biological process spindle checkpoint signaling negative regulation of cell cycle regulation of mitotic nuclear division intracellular signal transduction negative regulation of mitotic cell cycle cell communication negative regulation of mitotic sister chromatid segregation negative regulation of chromosome organization negative regulation of cell cycle phase transition cellular response to stimulus regulation of cellular process regulation of cell cycle phase transition response to stimulus negative regulation of biological process spindle checkpoint signaling negative regulation of cell cycle regulation of mitotic nuclear division intracellular signal transduction negative regulation of mitotic cell cycle cell communication negative regulation of mitotic sister chromatid segregation negative regulation of chromosome organization negative regulation of cell cycle phase transition mitotic spindle checkpoint signaling signal transduction cell cycle mitotic sister chromatid separation chromosome segregation negative regulation of sister chromatid segregation mitotic spindle assembly checkpoint signaling regulation of biological process negative regulation of cellular component organization regulation of cell cycle process sister chromatid segregation regulation of chromosome organization regulation of organelle organization regulation of mitotic cell cycle phase transition regulation of mitotic sister chromatid segregation mitotic cell cycle process regulation of chromosome separation negative regulation of mitotic nuclear division regulation of chromosome segregation regulation of cellular component organization regulation of mitotic sister chromatid separation regulation of metaphase/anaphase transition of cell cycle signaling spindle assembly checkpoint signaling cell cycle phase transition regulation of mitotic metaphase/anaphase transition mitotic cell cycle cellular component organization regulation of mitotic cell cycle negative regulation of cellular process mitotic sister chromatid segregation negative regulation of mitotic metaphase/anaphase transition cellular component organization or biogenesis regulation of cell cycle negative regulation of chromosome separation cell cycle process mitotic nuclear division negative regulation of mitotic cell cycle phase transition organelle fission biological regulation chromosome organization negative regulation of cell cycle process cell cycle checkpoint signaling mitotic cell cycle checkpoint signaling organelle organization nuclear division negative regulation of chromosome segregation negative regulation of nuclear division negative regulation of organelle organization chromosome separation regulation of sister chromatid segregation negative regulation of mitotic sister chromatid separation regulation of nuclear division negative regulation of metaphase/anaphase transition of cell cycle nuclear chromosome segregation metaphase/anaphase transition of mitotic cell cycle cellular process metaphase/anaphase transition of cell cycle mitotic cell cycle phase transition cell division	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle protein-containing complex organelle nucleus nuclear protein-containing complex mitotic checkpoint complex intracellular membrane-bounded organelle intracellular membraneless organelle chromosome cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle protein-containing complex organelle nucleus nuclear protein-containing complex mitotic checkpoint complex intracellular membrane-bounded organelle intracellular membraneless organelle chromosome chromosomal region kinetochore membraneless organelle chromosome, centromeric region condensed chromosome, centromeric region supramolecular complex condensed chromosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D, G	IPR024977	Anaphase-promoting complex subunit 4-like, WD40 domain	Domain
A, D, G	IPR019775	WD40 repeat, conserved site	Conserved Site
A, D, G	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
A, D, G	IPR001680	WD40 repeat	Repeat
A, D, G	IPR033010	WD repeat Cdc20/Fizzy	Family
A, D, G	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
B, E, H	IPR045091	Mad2-like	Family
B, E, H	IPR036570	HORMA domain superfamily	Homologous Superfamily
B, E, H	IPR003511	HORMA domain	Domain
C, F, I	IPR011990	Tetratricopeptide-like helical domain superfamily	Homologous Superfamily
C, F, I	IPR015661	Mitotic spindle checkpoint protein Bub1/Mad3	Family
C, F, I	IPR013212	Mad3/Bub1 homology region 1	Domain

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.