Annotations: 1D9S

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1d9sa_	Low resolution protein structures	Computational models partly based on experimental data	Computational models partly based on experimental data	Computational models partly based on experimental data	Tumor suppressor p15(ink4b)	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Ankyrin repeat	8081092	4000366	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ankyrin repeat	8081093	3000154	SCOP2 (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	Ank_2	e1d9sA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: Ankyrin repeat (From Topology)	T: Ankyrin repeat	F: Ank_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.25.40.20	Mainly Alpha	Alpha Horseshoe	Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat	Ankyrin repeat-containing domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF12796	Ankyrin repeats (3 copies) (Ank_2)	Ankyrin repeats (3 copies)	-	Repeat
A	PF00023	Ankyrin repeat (Ank)	Ankyrin repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CYCLIN-DEPENDENT KINASE 4 INHIBITOR B	protein binding binding kinase binding enzyme binding protein kinase binding enzyme regulator activity enzyme inhibitor activity protein kinase regulator activity protein kinase inhibitor activity molecular function inhibitor activity cyclin-dependent protein serine/threonine kinase inhibitor activity molecular function regulator activity cyclin-dependent protein serine/threonine kinase regulator activity protein serine/threonine kinase inhibitor activity protein binding binding kinase binding enzyme binding protein kinase binding enzyme regulator activity enzyme inhibitor activity protein kinase regulator activity protein kinase inhibitor activity molecular function inhibitor activity cyclin-dependent protein serine/threonine kinase inhibitor activity molecular function regulator activity cyclin-dependent protein serine/threonine kinase regulator activity protein serine/threonine kinase inhibitor activity kinase inhibitor activity kinase regulator activity	developmental process multicellular organism development multicellular organismal process hepaticobiliary system development gland development animal organ development anatomical structure development liver development system development cellular response to stimulus cellular response to nutrient levels response to nutrient levels cellular response to chemical stimulus response to stimulus developmental process multicellular organism development multicellular organismal process hepaticobiliary system development gland development animal organ development anatomical structure development liver development system development cellular response to stimulus cellular response to nutrient levels response to nutrient levels cellular response to chemical stimulus response to stimulus response to chemical response to nutrient cellular response to nutrient cellular process immune system development spleen development immune system process hematopoietic or lymphoid organ development regulation of cellular process cellular developmental process regulation of developmental process positive regulation of biological process regulation of cell differentiation epithelial cell differentiation regulation of epithelial cell differentiation positive regulation of developmental process positive regulation of cell differentiation cell differentiation regulation of multicellular organismal process positive regulation of cellular process epithelium development regulation of biological process regulation of multicellular organismal development biological regulation positive regulation of epithelial cell differentiation tissue development regulation of cell cycle phase transition negative regulation of biological process negative regulation of cell cycle cell cycle phase transition regulation of cell cycle G1/S phase transition cell cycle G1/S phase transition mitotic cell cycle negative regulation of mitotic cell cycle regulation of mitotic cell cycle negative regulation of cellular process negative regulation of cell cycle phase transition cell cycle regulation of cell cycle cell cycle process negative regulation of G1/S transition of mitotic cell cycle negative regulation of mitotic cell cycle phase transition regulation of cell cycle process negative regulation of cell cycle G1/S phase transition negative regulation of cell cycle process regulation of mitotic cell cycle phase transition mitotic cell cycle process regulation of G1/S transition of mitotic cell cycle G1/S transition of mitotic cell cycle mitotic cell cycle phase transition cellular response to endogenous stimulus cellular response to growth factor stimulus response to transforming growth factor beta cellular response to transforming growth factor beta stimulus response to endogenous stimulus response to growth factor positive regulation of cell communication cell surface receptor protein serine/threonine kinase signaling pathway positive regulation of signal transduction signaling regulation of transmembrane receptor protein serine/threonine kinase signaling pathway regulation of signal transduction cell communication regulation of transforming growth factor beta receptor signaling pathway positive regulation of response to stimulus signal transduction enzyme-linked receptor protein signaling pathway regulation of signaling cell surface receptor signaling pathway regulation of cellular response to transforming growth factor beta stimulus positive regulation of transforming growth factor beta receptor signaling pathway regulation of cellular response to growth factor stimulus positive regulation of transmembrane receptor protein serine/threonine kinase signaling pathway positive regulation of cellular response to transforming growth factor beta stimulus regulation of response to stimulus transforming growth factor beta receptor signaling pathway regulation of cell communication transforming growth factor beta receptor superfamily signaling pathway positive regulation of signaling cell development regulation of neurogenesis regulation of gliogenesis negative regulation of glial cell proliferation regulation of cell development regulation of nervous system development neurogenesis negative regulation of neurogenesis regulation of glial cell proliferation gliogenesis negative regulation of nervous system development negative regulation of cell differentiation negative regulation of cell population proliferation cell population proliferation negative regulation of developmental process nervous system development negative regulation of gliogenesis negative regulation of cell development regulation of cell population proliferation glial cell proliferation negative regulation of multicellular organismal process regulation of G0 to G1 transition G0 to G1 transition regulation of epithelial cell proliferation epithelial cell proliferation negative regulation of epithelial cell proliferation cellular response to cell-matrix adhesion response to peptide response to cytokine cellular response to stress response to stress cellular senescence myeloid cell differentiation hemopoiesis megakaryocyte differentiation	cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR002110	Ankyrin repeat	Repeat
A	IPR036770	Ankyrin repeat-containing domain superfamily	Homologous Superfamily
A	IPR050776	Ankyrin Repeat and Cyclin-Dependent Kinase Inhibitor	Family

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.