Annotations: 1BD8

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1bd8a_	Alpha and beta proteins (a+b)	beta-hairpin-alpha-hairpin repeat	Ankyrin repeat	Ankyrin repeat	Cell cycle inhibitor p19ink4D	human (Homo sapiens ) [TaxId: 9606 ],	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	8004097	4000366	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ankyrin repeat	8057703	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	PF12796	e1bd8A1	A: alpha superhelices	X: Repetitive alpha hairpins	H: Ankyrin repeat (From Topology)	T: Ankyrin repeat	F: PF12796	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	P19INK4D CDK4/6 INHIBITOR	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	cellular process cell cycle regulation of biological process regulation of cellular process phosphorylation cellular metabolic process negative regulation of metabolic process biological regulation negative regulation of biological process negative regulation of phosphate metabolic process regulation of cellular metabolic process negative regulation of cellular metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process cellular process cell cycle regulation of biological process regulation of cellular process phosphorylation cellular metabolic process negative regulation of metabolic process biological regulation negative regulation of biological process negative regulation of phosphate metabolic process regulation of cellular metabolic process negative regulation of cellular metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process negative regulation of phosphorus metabolic process negative regulation of cellular process regulation of phosphorus metabolic process metabolic process regulation of phosphorylation negative regulation of phosphorylation phosphorus metabolic process regulation of metabolic process negative regulation of hydrolase activity negative regulation of proteolysis regulation of catalytic activity negative regulation of catalytic activity regulation of programmed cell death negative regulation of endopeptidase activity regulation of primary metabolic process negative regulation of peptidase activity regulation of cysteine-type endopeptidase activity involved in apoptotic process organic substance metabolic process regulation of proteolysis proteolysis regulation of endopeptidase activity negative regulation of cysteine-type endopeptidase activity involved in apoptotic process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of cysteine-type endopeptidase activity organonitrogen compound metabolic process negative regulation of programmed cell death regulation of protein metabolic process regulation of apoptotic process regulation of peptidase activity negative regulation of molecular function primary metabolic process regulation of macromolecule metabolic process cell death regulation of molecular function negative regulation of apoptotic process regulation of hydrolase activity negative regulation of cysteine-type endopeptidase activity macromolecule metabolic process apoptotic process programmed cell death response to light stimulus response to stimulus response to radiation response to abiotic stimulus response to UV negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation response to nutrient levels response to organic substance response to vitamin D response to lipid response to chemical response to nutrient response to oxygen-containing compound response to vitamin response to organic cyclic compound multicellular organismal process system process sensory perception nervous system process sensory perception of sound sensory perception of mechanical stimulus regulation of cell cycle phase transition regulation of cell cycle process negative regulation of cell cycle G1/S phase transition negative regulation of cell cycle cell cycle phase transition regulation of cell cycle G1/S phase transition negative regulation of cell cycle process cell cycle G1/S phase transition negative regulation of cell cycle phase transition regulation of cell cycle cell cycle process regulation of growth regulation of cellular component organization growth negative regulation of cell growth regulation of cell growth cell growth cellular component organization negative regulation of growth cellular component organization or biogenesis cellular response to stimulus signaling negative regulation of signaling negative regulation of intracellular signal transduction regulation of cellular response to stress regulation of signal transduction regulation of intrinsic apoptotic signaling pathway in response to DNA damage regulation of intrinsic apoptotic signaling pathway intracellular signal transduction negative regulation of cell communication cell communication cellular response to stress regulation of intracellular signal transduction response to stress negative regulation of apoptotic signaling pathway regulation of response to stress intrinsic apoptotic signaling pathway in response to DNA damage signal transduction intrinsic apoptotic signaling pathway regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage apoptotic signaling pathway negative regulation of intrinsic apoptotic signaling pathway DNA damage response regulation of response to stimulus regulation of cell communication regulation of apoptotic signaling pathway regulation of protein modification process regulation of protein phosphorylation regulation of cyclin-dependent protein kinase activity regulation of transferase activity regulation of cyclin-dependent protein serine/threonine kinase activity protein modification process protein phosphorylation regulation of protein kinase activity regulation of kinase activity macromolecule modification regulation of protein serine/threonine kinase activity mitotic cell cycle regulation of mitotic cell cycle phase transition regulation of mitotic cell cycle regulation of G1/S transition of mitotic cell cycle mitotic cell cycle process G1/S transition of mitotic cell cycle mitotic cell cycle phase transition response to retinoic acid cellular biosynthetic process DNA synthesis involved in DNA repair nucleobase-containing compound metabolic process nucleic acid biosynthetic process organic substance biosynthetic process DNA repair DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process organic cyclic compound biosynthetic process DNA biosynthetic process autophagic cell death	protein kinase complex transferase complex, transferring phosphorus-containing groups protein-containing complex catalytic complex serine/threonine protein kinase complex cyclin-dependent protein kinase holoenzyme complex transferase complex cyclin D2-CDK4 complex intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle nucleus protein kinase complex transferase complex, transferring phosphorus-containing groups protein-containing complex catalytic complex serine/threonine protein kinase complex cyclin-dependent protein kinase holoenzyme complex transferase complex cyclin D2-CDK4 complex intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen

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

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P55273	astrocytic tumor familial melanoma glioblastoma malignant ependymoma medulloblastoma rheumatoid arthritis atypical teratoid rhabdoid tumor gastric cancer hereditary diffuse gastric adenocarcinoma malignant glioma oligodendroglioma tuberculosis breast cancer gastric neoplasm large cell medulloblastoma astrocytic tumor familial melanoma glioblastoma malignant ependymoma medulloblastoma rheumatoid arthritis atypical teratoid rhabdoid tumor gastric cancer hereditary diffuse gastric adenocarcinoma malignant glioma oligodendroglioma tuberculosis breast cancer gastric neoplasm large cell medulloblastoma Malignant neoplasm of stomach pilocytic astrocytoma vascular disease

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.