Annotations: 3T81

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Isoaspartyl-dipeptidase	e3t81A5	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: Isoaspartyl-dipeptidase	ECOD (1.6)
A	Adenine_deam_C	e3t81A4	A: a+b complex topology	X: Adenine deaminase 2 C-terminal domain (From Topology)	H: Adenine deaminase 2 C-terminal domain (From Topology)	T: Adenine deaminase 2 C-terminal domain	F: Adenine_deam_C	ECOD (1.6)
A	Amidohydro_1_N	e3t81A6	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	Isoaspartyl-dipeptidase	e3t81B5	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: Isoaspartyl-dipeptidase	ECOD (1.6)
B	Adenine_deam_C	e3t81B4	A: a+b complex topology	X: Adenine deaminase 2 C-terminal domain (From Topology)	H: Adenine deaminase 2 C-terminal domain (From Topology)	T: Adenine deaminase 2 C-terminal domain	F: Adenine_deam_C	ECOD (1.6)
B	Amidohydro_1_N	e3t81B6	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	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
A, B	PF13382	Adenine deaminase C-terminal domain (Adenine_deam_C)	Adenine deaminase C-terminal domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Adenine deaminase 2	hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines adenine deaminase activity hydrolase activity catalytic activity deaminase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds	organonitrogen compound catabolic process catabolic process organonitrogen compound metabolic process purine nucleobase metabolic process primary metabolic process purine-containing compound catabolic process purine nucleobase catabolic process organic cyclic compound catabolic process purine-containing compound metabolic process adenine catabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process nucleobase catabolic process nucleobase-containing small molecule metabolic process organonitrogen compound catabolic process catabolic process organonitrogen compound metabolic process purine nucleobase metabolic process primary metabolic process purine-containing compound catabolic process purine nucleobase catabolic process organic cyclic compound catabolic process purine-containing compound metabolic process adenine catabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process nucleobase catabolic process nucleobase-containing small molecule metabolic process nucleobase metabolic process adenine metabolic process metabolic process small molecule metabolic process organic substance catabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR006679	Adenine deaminase	Family
A, B	IPR006680	Amidohydrolase-related	Domain
A, B	IPR011059	Metal-dependent hydrolase, composite domain superfamily	Homologous Superfamily
A, B	IPR032466	Metal-dependent hydrolase	Homologous Superfamily
A, B	IPR026912	Adenine deaminase C-terminal domain	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.