Annotations: 1Y21

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1y21a_	Alpha and beta proteins (a+b)	DNase I-like	DNase I-like	Inositol polyphosphate 5-phosphatase (IPP5)	Salivary nitrophorin	bed bug (Cimex lectularius ) [TaxId: 79782 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	DNase I-like	8034550	3000957	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	PF22669	e1y21A1	A: a+b four layers	X: Carbon-nitrogen hydrolase-like	H: DNase I-like (From Topology)	T: DNase I-like	F: PF22669	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.60.10.10	Alpha Beta	4-Layer Sandwich	Deoxyribonuclease I	Chain A	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	salivary nitrophorin	phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity binding organic cyclic compound binding tetrapyrrole binding heme binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity binding organic cyclic compound binding tetrapyrrole binding heme binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	regulation of tube diameter multicellular organismal process system process biological process involved in interspecies interaction between organisms regulation of tube size biological regulation modulation of biological quality in another organism vasodilation in another organism circulatory system process vascular process in circulatory system blood vessel diameter maintenance regulation of biological quality modulation of process of another organism vasodilation regulation of tube diameter multicellular organismal process system process biological process involved in interspecies interaction between organisms regulation of tube size biological regulation modulation of biological quality in another organism vasodilation in another organism circulatory system process vascular process in circulatory system blood vessel diameter maintenance regulation of biological quality modulation of process of another organism vasodilation blood circulation regulation of anatomical structure size nitric oxide transport localization nitrogen compound transport transport establishment of localization phosphatidylinositol metabolic process dephosphorylation cellular metabolic process glycerophospholipid metabolic process lipid modification primary metabolic process phospholipid metabolic process organic substance metabolic process organophosphate metabolic process phosphatidylinositol dephosphorylation phospholipid dephosphorylation phosphate-containing compound metabolic process cellular lipid metabolic process metabolic process cellular process glycerolipid metabolic process phosphorus metabolic process lipid metabolic process	extracellular region extracellular space cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR046985	Inositol 5-phosphatase	Family
A	IPR036691	Endonuclease/exonuclease/phosphatase superfamily	Homologous Superfamily
A	IPR000300	Inositol polyphosphate-related phosphatase	Domain

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.