Annotations: 5U03

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Simibi-like P-loop NTPases	8057751	3002018	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Simibi-like P-loop NTPases	8057751	3002018	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Simibi-like P-loop NTPases	8057751	3002018	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Simibi-like P-loop NTPases	8057751	3002018	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)
B	CTP_synth_N	e5u03B1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: CTP_synth_N	ECOD (1.6)
B	GATase	e5u03B2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Class I glutamine amidotransferase-like	F: GATase	ECOD (1.6)
A	CTP_synth_N	e5u03A1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: CTP_synth_N	ECOD (1.6)
A	GATase	e5u03A2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Class I glutamine amidotransferase-like	F: GATase	ECOD (1.6)
C	CTP_synth_N	e5u03C1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: CTP_synth_N	ECOD (1.6)
C	GATase	e5u03C2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Class I glutamine amidotransferase-like	F: GATase	ECOD (1.6)
D	CTP_synth_N	e5u03D1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: CTP_synth_N	ECOD (1.6)
D	GATase	e5u03D2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Class I glutamine amidotransferase-like	F: GATase	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00117	Glutamine amidotransferase class-I (GATase)	Glutamine amidotransferase class-I	-	Domain
A, B, C, D	PF07722	Peptidase C26 (Peptidase_C26)	Peptidase C26	These peptidases have gamma-glutamyl hydrolase activity; that is they catalyse the cleavage of the gamma-glutamyl bond in poly-gamma-glutamyl substrates. They are structurally related to Pfam:PF00117, but contain extensions in four loops and at the C ...	These peptidases have gamma-glutamyl hydrolase activity; that is they catalyse the cleavage of the gamma-glutamyl bond in poly-gamma-glutamyl substrates. They are structurally related to Pfam:PF00117, but contain extensions in four loops and at the C terminus [1].	Domain
A, B, C, D	PF06418	CTP synthase N-terminus (CTP_synth_N)	CTP synthase N-terminus	This family consists of the N-terminal region of the CTP synthase protein (EC:6.3.4.2). This family is found in conjunction with Pfam:PF00117 located in the C-terminal region of the protein. CTP synthase catalyses the synthesis of CTP from UTP by ami ...	This family consists of the N-terminal region of the CTP synthase protein (EC:6.3.4.2). This family is found in conjunction with Pfam:PF00117 located in the C-terminal region of the protein. CTP synthase catalyses the synthesis of CTP from UTP by amination of the pyrimidine ring at the 4-position [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	CTP synthase 1	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding CTP synthase activity catalytic activity ligase activity, forming carbon-nitrogen bonds ligase activity identical protein binding protein binding	response to stimulus response to chemical response to xenobiotic stimulus 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 small molecule metabolic process metabolic process response to stimulus response to chemical response to xenobiotic stimulus 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 small molecule metabolic process metabolic process cellular process pyrimidine-containing compound biosynthetic process multicellular organismal process cell population proliferation B cell activation cell activation B cell proliferation lymphocyte activation leukocyte proliferation leukocyte activation immune system process mononuclear cell proliferation lymphocyte proliferation T cell activation T cell proliferation ribose phosphate metabolic process CTP biosynthetic process nucleotide biosynthetic process carbohydrate derivative metabolic process pyrimidine nucleotide metabolic process ribonucleotide biosynthetic process 'de novo' CTP biosynthetic process pyrimidine ribonucleoside triphosphate biosynthetic process ribonucleotide metabolic process phosphate-containing compound metabolic process pyrimidine nucleoside triphosphate biosynthetic process phosphorus metabolic process ribose phosphate biosynthetic process pyrimidine ribonucleotide metabolic process ribonucleoside triphosphate metabolic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process pyrimidine nucleoside triphosphate metabolic process nucleoside triphosphate biosynthetic process nucleobase-containing compound biosynthetic process nucleotide metabolic process CTP metabolic process ribonucleoside triphosphate biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process pyrimidine ribonucleoside triphosphate metabolic process nucleoside triphosphate metabolic process pyrimidine nucleotide biosynthetic process pyrimidine ribonucleotide biosynthetic process glutamine metabolic process oxoacid metabolic process carboxylic acid metabolic process amino acid metabolic process organic acid metabolic process alpha-amino acid metabolic process L-amino acid metabolic process glutamine family amino acid metabolic process proteinogenic amino acid metabolic process	cellular anatomical structure cytoophidium supramolecular fiber supramolecular polymer supramolecular complex membrane intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR029062	Class I glutamine amidotransferase-like	Homologous Superfamily
A, B, C, D	IPR004468	CTP synthase	Family
A, B, C, D	IPR017456	CTP synthase, N-terminal	Domain
A, B, C, D	IPR017926	Glutamine amidotransferase	Domain
A, B, C, D	IPR033828	CTP synthase GATase domain	Domain
A, B, C, D	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: P17812	severe combined immunodeficiency due to CTPS1 deficiency atrial fibrillation invasive ductal breast carcinoma medulloblastoma ovarian cancer psoriasis breast cancer large cell medulloblastoma nasopharyngeal carcinoma pancreatic ductal adenocarcinoma ductal breast carcinoma in situ lung cancer non-small cell lung carcinoma Pick disease ulcerative colitis

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.