Annotations: 3MPG

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	D-HYD_C	e3mpgA3	A: beta sandwiches	X: Composite domain of metallo-dependent hydrolases (From Topology)	H: Composite domain of metallo-dependent hydrolases (From Topology)	T: Composite domain of metallo-dependent hydrolases	F: D-HYD_C	ECOD (1.6)
A	DHOase	e3mpgA2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: DHOase	ECOD (1.6)
B	D-HYD_C	e3mpgB3	A: beta sandwiches	X: Composite domain of metallo-dependent hydrolases (From Topology)	H: Composite domain of metallo-dependent hydrolases (From Topology)	T: Composite domain of metallo-dependent hydrolases	F: D-HYD_C	ECOD (1.6)
B	DHOase	e3mpgB2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: DHOase	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.40.10	Mainly Beta	Roll	Urease, subunit C	domain 1	CATH (4.3.0)
A	3.20.20.140	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Metal-dependent hydrolases	CATH (4.3.0)
B	2.30.40.10	Mainly Beta	Roll	Urease, subunit C	domain 1	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 cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding	ribose phosphate metabolic process nucleotide biosynthetic process carbohydrate derivative metabolic process pyrimidine nucleotide metabolic process 'de novo' UMP biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process UMP biosynthetic process ribonucleotide metabolic process ribonucleoside monophosphate metabolic process nucleobase-containing small molecule metabolic process phosphate-containing compound metabolic process UMP metabolic process small molecule metabolic process ribose phosphate metabolic process nucleotide biosynthetic process carbohydrate derivative metabolic process pyrimidine nucleotide metabolic process 'de novo' UMP biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process UMP biosynthetic process ribonucleotide metabolic process ribonucleoside monophosphate metabolic process nucleobase-containing small molecule metabolic process phosphate-containing compound metabolic process UMP metabolic process small molecule metabolic process pyrimidine-containing compound biosynthetic process phosphorus metabolic process nucleoside monophosphate metabolic process ribose phosphate biosynthetic process pyrimidine ribonucleotide metabolic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process pyrimidine nucleoside monophosphate metabolic process pyrimidine ribonucleoside monophosphate metabolic process pyrimidine-containing compound metabolic process cellular metabolic process primary metabolic process nucleobase-containing compound biosynthetic process nucleotide metabolic process nucleoside monophosphate biosynthetic process biosynthetic process pyrimidine ribonucleoside monophosphate biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process metabolic process cellular process pyrimidine nucleoside monophosphate biosynthetic process ribonucleoside monophosphate biosynthetic process pyrimidine nucleotide biosynthetic process pyrimidine ribonucleotide biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050138	Dihydroorotase/Allantoinase Hydrolase	Family
A, B	IPR002195	Dihydroorotase, conserved site	Conserved Site
A, B	IPR006680	Amidohydrolase-related	Domain
A, B	IPR004722	Dihydroorotase	Family
A, B	IPR011059	Metal-dependent hydrolase, composite domain superfamily	Homologous Superfamily
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.