Annotations: 2CH9

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ch9a1	Alpha and beta proteins (a+b)	Cystatin-like	Cystatin/monellin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2ch9a2	Artifacts	Tags	Tags	Tags	C-terminal Tags	(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	Cystatins	8070216	4001013	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Cystatin/monellin	8070217	3000441	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	Cystatin	e2ch9A1	A: a+b two layers	X: Cystatin-like	H: Cystatin/monellin (From Topology)	T: Cystatin/monellin	F: Cystatin	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.450.10	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CYSTATIN F	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 identical protein binding protein binding binding protein homodimerization activity protein dimerization activity	multicellular organismal process system process regulation of cellular process regulation of developmental process regulation of myelination regulation of system process positive regulation of biological process regulation of nervous system development multicellular organism development positive regulation of myelination axon ensheathment ensheathment of neurons positive regulation of nervous system process anatomical structure development multicellular organismal process system process regulation of cellular process regulation of developmental process regulation of myelination regulation of system process positive regulation of biological process regulation of nervous system development multicellular organism development positive regulation of myelination axon ensheathment ensheathment of neurons positive regulation of nervous system process anatomical structure development regulation of multicellular organismal process positive regulation of cellular process system development developmental process regulation of biological process regulation of multicellular organismal development nervous system process biological regulation nervous system development regulation of nervous system process myelination positive regulation of multicellular organismal process cellular process response to stimulus immune response immune system process regulation of macrophage activation regulation of defense response regulation of response to external stimulus negative regulation of inflammatory response regulation of leukocyte activation negative regulation of biological process regulation of cell activation myeloid leukocyte activation leukocyte activation macrophage activation response to stress regulation of response to stress leukocyte activation involved in inflammatory response regulation of neuroinflammatory response negative regulation of cellular process regulation of immune system process defense response negative regulation of response to stimulus cell activation response to external stimulus regulation of inflammatory response negative regulation of microglial cell activation negative regulation of cell activation negative regulation of immune system process regulation of response to stimulus negative regulation of response to external stimulus negative regulation of defense response microglial cell activation inflammatory response glial cell activation regulation of microglial cell activation negative regulation of multicellular organismal process negative regulation of neuroinflammatory response neuroinflammatory response negative regulation of leukocyte activation negative regulation of macrophage activation negative regulation of hydrolase activity negative regulation of proteolysis regulation of catalytic activity negative regulation of catalytic activity regulation of primary metabolic process negative regulation of peptidase activity organic substance metabolic process regulation of proteolysis proteolysis protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process organonitrogen compound metabolic process regulation of protein metabolic process negative regulation of metabolic process negative regulation of molecular function regulation of peptidase activity primary metabolic process regulation of macromolecule metabolic process regulation of molecular function regulation of hydrolase activity metabolic process macromolecule metabolic process regulation of metabolic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle organelle intracellular vesicle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle vesicle Golgi apparatus endomembrane system endosome late endosome membrane-bounded organelle intracellular organelle intracellular anatomical structure cytoplasmic vesicle organelle intracellular vesicle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle vesicle Golgi apparatus endomembrane system endosome late endosome extracellular region extracellular space multivesicular body lytic vacuole vacuole lysosome endoplasmic reticulum

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR042886	Cystatin-F	Family
A	IPR000010	Cystatin domain	Domain
A	IPR046350	Cystatin superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: O76096	cutaneous lupus erythematosus gastric neoplasm lung cancer malignant mesothelioma non-small cell lung carcinoma ulcerative colitis exocrine pancreatic carcinoma hereditary diffuse gastric adenocarcinoma lung carcinoma Malignant neoplasm of stomach osteosarcoma gastric cancer interstitial cystitis lymphoplasmacytic lymphoma malignant pancreatic neoplasm cutaneous lupus erythematosus gastric neoplasm lung cancer malignant mesothelioma non-small cell lung carcinoma ulcerative colitis exocrine pancreatic carcinoma hereditary diffuse gastric adenocarcinoma lung carcinoma Malignant neoplasm of stomach osteosarcoma gastric cancer interstitial cystitis lymphoplasmacytic lymphoma malignant pancreatic neoplasm psoriasis

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.