Annotations: 1KCX

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1kcxa1	All beta proteins	Composite domain of metallo-dependent hydrolases	Composite domain of metallo-dependent hydrolases	Hydantoinase (dihydropyrimidinase)	Dihydropyrimidinase related protein-1	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1kcxa2	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Metallo-dependent hydrolases	Hydantoinase (dihydropyrimidinase), catalytic domain	Dihydropyrimidinase related protein-1	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d1kcxb1	All beta proteins	Composite domain of metallo-dependent hydrolases	Composite domain of metallo-dependent hydrolases	Hydantoinase (dihydropyrimidinase)	Dihydropyrimidinase related protein-1	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d1kcxb2	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Metallo-dependent hydrolases	Hydantoinase (dihydropyrimidinase), catalytic domain	Dihydropyrimidinase related protein-1	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Hydantoinase (dihydropyrimidinase)	8023821	4002171	SCOP2 (2022-06-29)
A	SCOP2 Family	Hydantoinase (dihydropyrimidinase), catalytic domain	8023825	4002199	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Composite domain of metallo-dependent hydrolases	8036201	3000176	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Metallo-dependent hydrolases	8036205	3000428	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Composite domain of metallo-dependent hydrolases	8036201	3000176	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Composite domain of metallo-dependent hydrolases	8036201	3000176	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Metallo-dependent hydrolases	8036205	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		e1kcxA1	A: Composite domain of metallo-dependent hydrolases	X: Composite domain of metallo-dependent hydrolases	H: Composite domain of metallo-dependent hydrolases	T:	F:	ECOD (20:10:01)
A		e1kcxA2	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: Epimerase	F:	ECOD (20:10:01)
B		e1kcxB1	A: Cloacin translocation domain	X: Cloacin translocation domain	H: Cloacin translocation domain	T:	F:	ECOD (20:10:01)
B		e1kcxB2	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: Epimerase	F:	ECOD (20:10:01)

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	DIHYDROPYRIMIDINASE RELATED PROTEIN-1	cytoskeletal protein binding protein binding binding filamin binding 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 phosphoprotein binding identical protein binding	cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus semaphorin-plexin signaling pathway signaling biological regulation cell communication cellular process signal transduction multicellular organismal process regulation of cellular component organization cellular component organization cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus semaphorin-plexin signaling pathway signaling biological regulation cell communication cellular process signal transduction multicellular organismal process regulation of cellular component organization cellular component organization cellular component biogenesis multicellular organism development cellular component assembly regulation of postsynapse assembly cell junction assembly anatomical structure development regulation of synapse structure or activity synapse organization cellular component organization or biogenesis regulation of synapse assembly regulation of biological quality system development developmental process postsynapse organization postsynapse assembly regulation of postsynapse organization nervous system development regulation of cellular component biogenesis regulation of cell junction assembly regulation of synapse organization cell junction organization synapse assembly regulation of neuron projection development cellular developmental process cell projection organization negative regulation of biological process cell development neuron projection development neurogenesis neuron differentiation cell differentiation negative regulation of cellular process negative regulation of cell projection organization plasma membrane bounded cell projection organization negative regulation of cellular component organization regulation of cell projection organization negative regulation of neuron projection development generation of neurons neuron development regulation of plasma membrane bounded cell projection organization	midbody cellular anatomical structure somatodendritic compartment cell body perikaryon neuronal cell body intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton centrosome midbody cellular anatomical structure somatodendritic compartment cell body perikaryon neuronal cell body intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton centrosome microtubule organizing center microtubule cytoskeleton cytoplasm cytosol spindle presynapse synapse cell junction cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection growth cone axon distal axon site of polarized growth postsynapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
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	IPR050378	Metallo-dependent Hydrolases Superfamily	Family
A, B	IPR011778	Hydantoinase/dihydropyrimidinase	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.