Annotations: 1R21

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1r21a_	All beta proteins	SMAD/FHA domain	SMAD/FHA domain	FHA domain	Antigen ki-67	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	SCOP2B Superfamily	SMAD/FHA domain-like	8036979	3000137	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	PF00498	e1r21A1	A: beta sandwiches	X: SMAD/FHA domain (From Topology)	H: SMAD/FHA domain (From Topology)	T: SMAD/FHA domain	F: PF00498	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.200.20	Mainly Beta	Sandwich	Tumour Suppressor Smad4		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00498	FHA domain (FHA)	FHA domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Antigen Ki-67	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding nucleic acid binding RNA binding	cellular process cell cycle regulation of chromosome segregation regulation of biological process regulation of cellular process regulation of cell cycle process biological regulation regulation of cell cycle chromosome segregation cell cycle process mitotic nuclear division regulation of cellular component organization organelle fission regulation of mitotic nuclear division cellular process cell cycle regulation of chromosome segregation regulation of biological process regulation of cellular process regulation of cell cycle process biological regulation regulation of cell cycle chromosome segregation cell cycle process mitotic nuclear division regulation of cellular component organization organelle fission regulation of mitotic nuclear division regulation of organelle organization mitotic cell cycle cellular component organization regulation of mitotic cell cycle organelle organization nuclear division mitotic cell cycle process regulation of nuclear division cellular component organization or biogenesis cell population proliferation regulation of chromatin organization protein-containing complex organization protein-DNA complex organization chromatin organization	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle membrane chromosome nuclear body nucleoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR008984	SMAD/FHA domain superfamily	Homologous Superfamily
A	IPR000253	Forkhead-associated (FHA) domain	Domain
A	IPR012568	KI67R	Repeat
A	IPR029334	Protein phosphatase 1 binding domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P46013	psoriasis mesenchymal chondrosarcoma malignant colon neoplasm granular cell carcinoma adenocarcinoma lung adenocarcinoma breast carcinoma ovarian cancer peripheral nervous system disease colorectal cancer Copper-Overload Cirrhosis peripheral neuropathy tubular adenocarcinoma breast cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia psoriasis mesenchymal chondrosarcoma malignant colon neoplasm granular cell carcinoma adenocarcinoma lung adenocarcinoma breast carcinoma ovarian cancer peripheral nervous system disease colorectal cancer Copper-Overload Cirrhosis peripheral neuropathy tubular adenocarcinoma breast cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia ductal breast carcinoma in situ primitive neuroectodermal tumor pustulosis palmaris et plantaris hepatocellular carcinoma ulcerative colitis invasive ductal breast carcinoma malignant ependymoma atypical teratoid rhabdoid tumor colonic neoplasm pancreatic intraductal papillary-mucinous carcinoma cribriform carcinoma of breast endometriosis hepatitis spina bifida IgA glomerulonephritis large cell medulloblastoma lung cancer adrenal cortex carcinoma malignant glioma benign colon neoplasm non-small cell lung carcinoma ovarian neoplasm pancreatic intraductal papillary-mucinous neoplasm glioblastoma interstitial cystitis atopic eczema malignant mesothelioma malignant pancreatic neoplasm medulloblastoma osteosarcoma colorectal carcinoma pancreatic ductal adenocarcinoma cribriform carcinoma

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.