Annotations: 2Z28

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2z28a_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Metallo-dependent hydrolases	Dihydroorotase	Dihydroorotase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d2z28b_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Metallo-dependent hydrolases	Dihydroorotase	Dihydroorotase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Metallo-dependent hydrolases	8033929	3000428	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Metallo-dependent hydrolases	8033929	3000428	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	Amidohydro_1_N	e2z28A1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Amidohydro_1_N	ECOD (1.6)
B	Amidohydro_1_N	e2z28B1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: Amidohydro_1_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.20.140	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Metal-dependent hydrolases	CATH (4.3.0)
B	3.20.20.140	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Metal-dependent hydrolases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01979	Amidohydrolase family (Amidohydro_1)	Amidohydrolase family	This family of enzymes are a a large metal dependent hydrolase superfamily [1]. The family includes Adenine deaminase EC:3.5.4.2 that hydrolyses adenine to form hypoxanthine and ammonia. Adenine deaminases reaction is important for adenine utilisatio ...	This family of enzymes are a a large metal dependent hydrolase superfamily [1]. The family includes Adenine deaminase EC:3.5.4.2 that hydrolyses adenine to form hypoxanthine and ammonia. Adenine deaminases reaction is important for adenine utilisation as a purine and also as a nitrogen source [2]. This family also includes dihydroorotase and N-acetylglucosamine-6-phosphate deacetylases, EC:3.5.1.25 These enzymes catalyse the reaction N-acetyl-D-glucosamine 6-phosphate + H2O <=> D-glucosamine 6-phosphate + acetate. This family includes the catalytic domain of urease alpha subunit [3]. Dihydroorotases (EC:3.5.2.3) are also included [4-5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Dihydroorotase	dihydroorotase activity hydrolase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amides catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds identical protein binding protein binding binding protein homodimerization activity protein dimerization activity cation binding transition metal ion binding zinc ion binding ion binding dihydroorotase activity hydrolase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amides catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds identical protein binding protein binding binding protein homodimerization activity protein dimerization activity cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	pyrimidine-containing compound metabolic process nucleobase biosynthetic process pyrimidine nucleobase biosynthetic process primary metabolic process nucleobase-containing compound metabolic process pyrimidine nucleobase metabolic process biosynthetic process nucleobase-containing small molecule metabolic process nucleobase metabolic process 'de novo' pyrimidine nucleobase biosynthetic process small molecule metabolic process metabolic process cellular process pyrimidine-containing compound biosynthetic process pyrimidine-containing compound metabolic process nucleobase biosynthetic process pyrimidine nucleobase biosynthetic process primary metabolic process nucleobase-containing compound metabolic process pyrimidine nucleobase metabolic process biosynthetic process nucleobase-containing small molecule metabolic process nucleobase metabolic process 'de novo' pyrimidine nucleobase biosynthetic process small molecule metabolic process metabolic process cellular process pyrimidine-containing compound biosynthetic process nucleoside phosphate metabolic process nucleotide biosynthetic process nucleobase-containing compound biosynthetic process nucleotide metabolic process pyrimidine nucleotide metabolic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process phosphate-containing compound metabolic process phosphorus metabolic process pyrimidine nucleotide biosynthetic process ribose phosphate metabolic process carbohydrate derivative metabolic process 'de novo' UMP biosynthetic process ribonucleotide biosynthetic process UMP biosynthetic process ribonucleotide metabolic process ribonucleoside monophosphate metabolic process UMP metabolic process nucleoside monophosphate metabolic process ribose phosphate biosynthetic process pyrimidine ribonucleotide metabolic process carbohydrate derivative biosynthetic process pyrimidine nucleoside monophosphate metabolic process pyrimidine ribonucleoside monophosphate metabolic process nucleoside monophosphate biosynthetic process pyrimidine ribonucleoside monophosphate biosynthetic process pyrimidine nucleoside monophosphate biosynthetic process ribonucleoside monophosphate biosynthetic process pyrimidine ribonucleotide biosynthetic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR004721	Dihydroorotase homodimeric type	Family
A, B	IPR002195	Dihydroorotase, conserved site	Conserved Site
A, B	IPR006680	Amidohydrolase-related	Domain
A, B	IPR032466	Metal-dependent hydrolase	Homologous Superfamily

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.