Annotations: 2B9R

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Cyclin_C	e2b9rA2	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: Cyclin_C	ECOD (1.6)
A	Cyclin_N	e2b9rA1	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: Cyclin_N	ECOD (1.6)
B	Cyclin_C	e2b9rB2	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: Cyclin_C	ECOD (1.6)
B	Cyclin_N	e2b9rB1	A: alpha arrays	X: HTH	H: HTH	T: Cyclin-like	F: Cyclin_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.472.10	Mainly Alpha	Orthogonal Bundle	Cyclin A	domain 1	CATH (4.3.0)
B	1.10.472.10	Mainly Alpha	Orthogonal Bundle	Cyclin A	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02984	Cyclin, C-terminal domain (Cyclin_C)	Cyclin, C-terminal domain	Cyclins regulate cyclin dependent kinases (CDKs). Swiss:P22674 is a Uracil-DNA glycosylase that is related to other cyclins [4]. Cyclins contain two domains of similar all-alpha fold, of which this family corresponds with the C-terminal domain.	Domain
A, B	PF00134	Cyclin, N-terminal domain (Cyclin_N)	Cyclin, N-terminal domain	Cyclins regulate cyclin dependent kinases (CDKs). Swiss:P22674 is a Uracil-DNA glycosylase that is related to other cyclins [4]. Cyclins contain two domains of similar all-alpha fold, of which this family corresponds with the N-terminal domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Human cyclin B1	cyclin-dependent protein serine/threonine kinase activator activity enzyme regulator activity protein serine/threonine kinase activator activity molecular function activator activity protein kinase regulator activity kinase activator activity enzyme activator activity cyclin-dependent protein serine/threonine kinase regulator activity molecular function regulator activity protein kinase activator activity kinase regulator activity protein binding binding ubiquitin-like protein ligase binding cyclin-dependent protein serine/threonine kinase activator activity enzyme regulator activity protein serine/threonine kinase activator activity molecular function activator activity protein kinase regulator activity kinase activator activity enzyme activator activity cyclin-dependent protein serine/threonine kinase regulator activity molecular function regulator activity protein kinase activator activity kinase regulator activity protein binding binding ubiquitin-like protein ligase binding enzyme binding kinase binding protein kinase binding patched binding signaling receptor 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 signal transduction regulation of mitotic nuclear division intracellular signal transduction negative regulation of mitotic cell cycle cell communication 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 signal transduction regulation of mitotic nuclear division intracellular signal transduction negative regulation of mitotic cell cycle cell communication regulation of cell cycle checkpoint 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 regulation of spindle checkpoint 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 response to stimulus 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 regulation of mitotic spindle checkpoint signaling regulation of mitotic cell cycle spindle assembly checkpoint 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 regulation of intracellular signal transduction 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 regulation of signaling 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 chromosome separation negative regulation of organelle organization negative regulation of nuclear division 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 regulation of cell communication metaphase/anaphase transition of cell cycle mitotic cell cycle phase transition fibroblast proliferation cell population proliferation positive regulation of cell population proliferation positive regulation of biological process regulation of fibroblast proliferation regulation of cell population proliferation positive regulation of fibroblast proliferation positive regulation of cellular process establishment of organelle localization cellular localization mitotic metaphase chromosome alignment metaphase chromosome alignment localization chromosome localization organelle localization establishment of localization in cell establishment of localization establishment of chromosome localization aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds positive regulation of mitochondrial ATP synthesis coupled electron transport ATP synthesis coupled electron transport electron transport chain regulation of generation of precursor metabolites and energy generation of precursor metabolites and energy positive regulation of metabolic process respiratory electron transport chain regulation of mitochondrial ATP synthesis coupled electron transport metabolic process regulation of metabolic process mitochondrial ATP synthesis coupled electron transport developmental process multicellular organism development multicellular organismal process embryo development ending in birth or egg hatching chordate embryonic development anatomical structure development embryo development in utero embryonic development microtubule cytoskeleton organization mitotic spindle organization microtubule-based process cytoskeleton organization microtubule cytoskeleton organization involved in mitosis spindle organization positive regulation of cell cycle positive regulation of mitotic cell cycle cell cycle G2/M phase transition G2/M transition of mitotic cell cycle positive regulation of mitotic cell cycle phase transition positive regulation of cell cycle process positive regulation of G2/M transition of mitotic cell cycle regulation of G2/M transition of mitotic cell cycle regulation of cell cycle G2/M phase transition positive regulation of cell cycle G2/M phase transition positive regulation of cell cycle phase transition regulation of attachment of spindle microtubules to kinetochore positive regulation of chromosome segregation attachment of spindle microtubules to kinetochore positive regulation of attachment of spindle microtubules to kinetochore	intracellular organelle cellular anatomical structure intracellular anatomical structure cytoskeleton spindle organelle membraneless organelle intracellular membraneless organelle spindle pole microtubule cytoskeleton membrane centrosome microtubule organizing center cytoplasm intracellular organelle cellular anatomical structure intracellular anatomical structure cytoskeleton spindle organelle membraneless organelle intracellular membraneless organelle spindle pole microtubule cytoskeleton membrane centrosome microtubule organizing center cytoplasm cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen protein-containing complex chromosome chromosomal region kinetochore chromosome, centromeric region outer kinetochore condensed chromosome, centromeric region supramolecular complex condensed chromosome protein kinase complex transferase complex, transferring phosphorus-containing groups catalytic complex serine/threonine protein kinase complex cyclin-dependent protein kinase holoenzyme complex transferase complex cyclin B1-CDK1 complex mitochondrion mitochondrial matrix

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR048258	Cyclins, cyclin-box	Conserved Site
A, B	IPR004367	Cyclin, C-terminal domain	Domain
A, B	IPR046965	Cyclin A/B-like	Family
A, B	IPR048026	G2/mitotic-specific cyclin-B1, first cyclin box	Domain
A, B	IPR006671	Cyclin, N-terminal	Domain
A, B	IPR036915	Cyclin-like superfamily	Homologous Superfamily
A, B	IPR039361	Cyclin	Family
A, B	IPR013763	Cyclin-like domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P14635	polycystic ovary syndrome malignant pancreatic neoplasm non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm adrenal cortex carcinoma Sclerocystic Ovaries atypical teratoid rhabdoid tumor breast disease endometriosis IgA glomerulonephritis lung adenocarcinoma malignant ependymoma medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia polycystic ovary syndrome malignant pancreatic neoplasm non-small cell lung carcinoma pancreatic intraductal papillary-mucinous neoplasm adrenal cortex carcinoma Sclerocystic Ovaries atypical teratoid rhabdoid tumor breast disease endometriosis IgA glomerulonephritis lung adenocarcinoma malignant ependymoma medulloblastoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia primitive neuroectodermal tumor astrocytic tumor Sjogren syndrome breast cancer cancer glioblastoma invasive ductal breast carcinoma lung cancer malignant glioma nasopharyngeal carcinoma pancreatic intraductal papillary-mucinous carcinoma pituitary cancer psoriasis atopic eczema ulcerative colitis breast carcinoma ductal breast carcinoma in situ hepatocellular carcinoma large cell medulloblastoma malignant colon neoplasm

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.