Annotations: 8V57

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Cysteine proteinases	8066293	3001808	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Cysteine proteinases	8066293	3001808	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C, D	PF00031	Cystatin domain (Cystatin)	Cystatin domain	Very diverse family. Attempts to define separate sub-families failed. Typically, either the N-terminal or C-terminal end is very divergent. But splitting into two domains would make very short families. All members except Swiss:Q03196 and Swiss:Q1 ...	Very diverse family. Attempts to define separate sub-families failed. Typically, either the N-terminal or C-terminal end is very divergent. But splitting into two domains would make very short families. All members except Swiss:Q03196 and Swiss:Q10993 are found. Pfam:PF00666 are related to this family but have not been included.	Domain
A, B	PF00112	Papain family cysteine protease (Peptidase_C1)	Papain family cysteine protease		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, D	Cystatin-C	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity molecular function regulator activity enzyme inhibitor activity cysteine-type endopeptidase inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity protein binding binding enzyme binding protease binding	response to stimulus response to chemical response to xenobiotic stimulus response to stress response to wounding response to axon injury regulation of cellular process positive regulation of DNA replication positive regulation of biological process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process response to stimulus response to chemical response to xenobiotic stimulus response to stress response to wounding response to axon injury regulation of cellular process positive regulation of DNA replication positive regulation of biological process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of biological process biological regulation primary metabolic process DNA metabolic process regulation of macromolecule metabolic process nucleic acid metabolic process DNA replication positive regulation of DNA metabolic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process regulation of DNA metabolic process regulation of DNA replication response to toxic substance developmental process multicellular organism development multicellular organismal process multi-multicellular organism process reproductive process anatomical structure development female pregnancy embryo implantation multi-organism reproductive process cell population proliferation positive regulation of cell population proliferation regulation of cell population proliferation cellular response to stimulus cellular response to oxidative stress response to oxygen-containing compound cellular response to chemical stress cellular response to oxygen-containing compound cellular response to hydrogen peroxide response to reactive oxygen species response to hydrogen peroxide response to oxidative stress cellular response to reactive oxygen species cellular response to chemical stimulus cellular response to stress response to decreased oxygen levels response to hypoxia response to oxygen levels response to abiotic stimulus sensory organ development eye development animal organ development visual system development sensory system development system development response to nutrient levels cellular developmental process sex differentiation cell development developmental process involved in reproduction epithelial cell differentiation Sertoli cell differentiation male gonad development male sex differentiation development of primary male sexual characteristics development of primary sexual characteristics cell differentiation reproductive structure development epithelium development gonad development reproductive system development Sertoli cell development tissue development epithelial cell development response to carbohydrate response to lipid response to estradiol gland development salivary gland development exocrine system development	intracellular anatomical structure intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber supramolecular polymer supramolecular complex membrane-bounded organelle nuclear membrane membrane intracellular anatomical structure intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber supramolecular polymer supramolecular complex membrane-bounded organelle nuclear membrane membrane nucleus intracellular membrane-bounded organelle endomembrane system organelle envelope nuclear envelope organelle membrane basement membrane cell periphery extracellular matrix external encapsulating structure endosome intracellular vesicle cytoplasmic vesicle late endosome multivesicular body vesicle perinuclear region of cytoplasm somatodendritic compartment cell body neuronal cell body axon cell projection neuron projection plasma membrane bounded cell projection extracellular region extracellular space
A, B	Cathepsin K	protein binding binding fibronectin binding cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity catalytic activity endopeptidase activity proteoglycan binding carbohydrate derivative binding collagen binding protein-containing complex binding	collagen catabolic process catabolic process metabolic process cellular process collagen metabolic process regulation of hormone levels phenol-containing compound metabolic process biological regulation modified amino acid metabolic process regulation of biological quality hormone metabolic process thyroid hormone generation thyroid hormone metabolic process developmental process collagen catabolic process catabolic process metabolic process cellular process collagen metabolic process regulation of hormone levels phenol-containing compound metabolic process biological regulation modified amino acid metabolic process regulation of biological quality hormone metabolic process thyroid hormone generation thyroid hormone metabolic process developmental process multicellular organismal process regulation of cartilage development regulation of multicellular organismal development regulation of biological process regulation of developmental process connective tissue development negative regulation of cartilage development negative regulation of developmental process animal organ development negative regulation of biological process tissue development multicellular organism development skeletal system development anatomical structure development regulation of multicellular organismal process negative regulation of multicellular organismal process cartilage development system development proteolysis involved in protein catabolic process proteolysis primary metabolic process protein catabolic process protein metabolic process macromolecule metabolic process macromolecule catabolic process multicellular organismal-level homeostasis homeostatic process tissue remodeling bone remodeling anatomical structure homeostasis tissue homeostasis bone resorption	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane apical part of cell plasma membrane region apical plasma membrane extracellular region extracellular space membrane-bounded organelle intracellular anatomical structure cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane apical part of cell plasma membrane region apical plasma membrane extracellular region extracellular space membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen lytic vacuole vacuole cytoplasm lysosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C, D	IPR000010	Cystatin domain	Domain
C, D	IPR046350	Cystatin superfamily	Homologous Superfamily
C, D	IPR018073	Proteinase inhibitor I25, cystatin, conserved site	Conserved Site
A, B	IPR000169	Cysteine peptidase, cysteine active site	Active Site
A, B	IPR013128	Peptidase C1A	Family
A, B	IPR000668	Peptidase C1A, papain C-terminal	Domain
A, B	IPR013201	Cathepsin propeptide inhibitor domain (I29)	Domain
A, B	IPR038765	Papain-like cysteine peptidase superfamily	Homologous Superfamily
A, B	IPR025660	Cysteine peptidase, histidine active site	Active Site
A, B	IPR039417	Papain-like cysteine endopeptidase	Domain

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.