1KA1 | pdb_00001ka1

The PAPase Hal2p complexed with calcium and magnesium ions and reaction substrate: PAP

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ka1a_	Multi-domain proteins (alpha and beta)	Carbohydrate phosphatase	Carbohydrate phosphatase	Inositol monophosphatase/fructose-1,6-bisphosphatase-like	3'	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Inositol monophosphatase/fructose-1, 6-bisphosphatase-like	8025588	4002766	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Carbohydrate phosphatase-like	8037967	3001721	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	Inositol_P	e1ka1A1	A: a+b two layers	X: a+b domain in carbohydrate phosphatases	H: a+b domain in carbohydrate phosphatases	T: a+b domain in carbohydrate phosphatases	F: Inositol_P	ECOD (v294.1)
A	Inositol_P	e1ka1A2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Rossmann-like domain in carbohydrate phosphatases	F: Inositol_P	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.540.10	Alpha Beta	2-Layer Sandwich	Fructose-1,6-Bisphosphatase	Chain A, domain 1	CATH (4.3.0)
A	3.40.190.80	Alpha Beta	3-Layer(aba) Sandwich	D-Maltodextrin-Binding Protein	domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00459	Inositol monophosphatase family (Inositol_P)	Inositol monophosphatase family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Halotolerance protein HAL2	phosphoric ester hydrolase activity nucleotidase activity hydrolase activity, acting on ester bonds phosphatase activity 3'(2'),5'-bisphosphate nucleotidase activity hydrolase activity catalytic activity cation binding ion binding binding metal ion binding small molecule binding	catabolic process RNA metabolic process primary metabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process tRNA metabolic process nucleobase-containing compound metabolic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process tRNA decay RNA catabolic process catabolic process RNA metabolic process primary metabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process tRNA metabolic process nucleobase-containing compound metabolic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process tRNA decay RNA catabolic process phosphatidylinositol metabolic process glycerophospholipid biosynthetic process glycerophospholipid metabolic process lipid biosynthetic process phosphatidylinositol phosphate biosynthetic process phospholipid biosynthetic process phosphatidylinositol biosynthetic process phospholipid metabolic process biosynthetic process glycerolipid biosynthetic process organophosphate metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process glycerolipid metabolic process phosphorus metabolic process lipid metabolic process response to osmotic stress hyperosmotic response response to stimulus response to stress response to abiotic stimulus response to salt stress hyperosmotic salinity response sulfate assimilation sulfur compound metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR006239	3(2),5 -bisphosphate nucleotidase	Family
A	IPR020550	Inositol monophosphatase, conserved site	Conserved Site
A	IPR020583	Inositol monophosphatase, metal-binding site	Binding Site
A	IPR000760	Inositol monophosphatase-like	Family
A	IPR051090	Inositol Monophosphatase Superfamily	Family

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.