Annotations: 4BOU

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	OTU	e4bouA1	A: a+b complex topology	X: Cysteine proteinases-like	H: Cysteine proteinases (From Topology)	T: Cysteine proteinases	F: OTU	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.70.80	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02338	OTU-like cysteine protease (OTU)	OTU-like cysteine protease	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	OTU DOMAIN-CONTAINING PROTEIN 3	cysteine-type peptidase activity ubiquitin-like protein peptidase activity peptidase activity cysteine-type deubiquitinase activity catalytic activity, acting on a protein hydrolase activity catalytic activity deubiquitinase activity	protein deubiquitination primary metabolic process protein modification by small protein removal macromolecule modification protein K27-linked deubiquitination metabolic process cellular process protein metabolic process macromolecule metabolic process post-translational protein modification protein modification process protein modification by small protein conjugation or removal regulation of protein stability biological regulation protein deubiquitination primary metabolic process protein modification by small protein removal macromolecule modification protein K27-linked deubiquitination metabolic process cellular process protein metabolic process macromolecule metabolic process post-translational protein modification protein modification process protein modification by small protein conjugation or removal regulation of protein stability biological regulation regulation of biological quality protein stabilization protein K11-linked deubiquitination protein K48-linked deubiquitination cellular response to stimulus regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction regulation of cellular process response to stimulus signaling negative regulation of signaling negative regulation of intracellular signal transduction negative regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction negative regulation of biological process regulation of signal transduction intracellular signal transduction negative regulation of cell communication cell communication regulation of intracellular signal transduction intracellular signaling cassette negative regulation of cellular process signal transduction regulation of biological process regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction regulation of response to stimulus regulation of cell communication phosphatidylinositol 3-kinase/protein kinase B signal transduction cellular response to nutrient levels response to nutrient levels proteolysis protein K6-linked deubiquitination	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR050704	Peptidase C85-like	Family
A	IPR003323	OTU domain	Domain
A	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q5T2D3	ulcerative colitis astrocytic tumor glioblastoma malignant glioma Pick disease atypical teratoid rhabdoid tumor inflammatory bowel disease oligodendroglioma rheumatoid arthritis Crohn disease malignant ependymoma ovarian cancer subependymal giant cell astrocytoma

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.