Annotations: 4I9A

Crystal Structure of Sus scrofa Quinolinate Phosphoribosyltransferase in Complex with Nicotinate Mononucleotide

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	SH3_1	e4i9aB1	A: alpha arrays	X: Major vault protein (MVP) structural repeat domain	H: Major vault protein (MVP) structural repeat domain	T: Major vault protein (MVP) structural repeat domain	F: SH3_1	ECOD (v295.2)
A	Glutaredoxin	e4i9aA1	A: alpha arrays	X: Cytochrome c-like	H: Cytochrome c	T: Cytochrome c	F: Glutaredoxin	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.90.1170.20	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)
B	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (4.3.0)
A	3.90.1170.20	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)
A	3.20.20.70	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Aldolase class I	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02749	Quinolinate phosphoribosyl transferase, N-terminal domain (QRPTase_N)	Quinolinate phosphoribosyl transferase, N-terminal domain	Quinolinate phosphoribosyl transferase (QPRTase) or nicotinate-nucleotide pyrophosphorylase EC:2.4.2.19 is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid with 5-phosphoribosyl ...	Quinolinate phosphoribosyl transferase (QPRTase) or nicotinate-nucleotide pyrophosphorylase EC:2.4.2.19 is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid with 5-phosphoribosyl-1-pyrophosphate (PRPP) in the presence of Mg2+ to give rise to nicotinic acid mononucleotide (NaMN), pyrophosphate and carbon dioxide [1,2]. The QA substrate is bound between the C-terminal domain of one subunit, and the N-terminal domain of the other. The N-terminal domain has an alpha/beta hammerhead fold.	Domain
A, B	PF01729	Quinolinate phosphoribosyl transferase, C-terminal domain (QRPTase_C)	Quinolinate phosphoribosyl transferase, C-terminal domain	Quinolinate phosphoribosyl transferase (QPRTase) or nicotinate-nucleotide pyrophosphorylase EC:2.4.2.19 is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid with 5-phosphoribosyl ...	Quinolinate phosphoribosyl transferase (QPRTase) or nicotinate-nucleotide pyrophosphorylase EC:2.4.2.19 is involved in the de novo synthesis of NAD in both prokaryotes and eukaryotes. It catalyses the reaction of quinolinic acid with 5-phosphoribosyl-1-pyrophosphate (PRPP) in the presence of Mg2+ to give rise to nicotinic acid mononucleotide (NaMN), pyrophosphate and carbon dioxide [1,2]. The QA substrate is bound between the C-terminal domain of one subunit, and the N-terminal domain of the other. The C-terminal domain has a 7 beta-stranded TIM barrel-like fold.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	quinolinate phosphoribosyltransferase	binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding pentosyltransferase activity glycosyltransferase activity nicotinate-nucleotide diphosphorylase (carboxylating) activity transferase activity catalytic activity identical protein binding protein binding	quinolinate metabolic process catabolic process oxoacid metabolic process dicarboxylic acid metabolic process carboxylic acid metabolic process dicarboxylic acid catabolic process quinolinate catabolic process carboxylic acid catabolic process pyridine-containing compound metabolic process small molecule metabolic process metabolic process cellular process small molecule catabolic process pyridine-containing compound catabolic process quinolinate metabolic process catabolic process oxoacid metabolic process dicarboxylic acid metabolic process carboxylic acid metabolic process dicarboxylic acid catabolic process quinolinate catabolic process carboxylic acid catabolic process pyridine-containing compound metabolic process small molecule metabolic process metabolic process cellular process small molecule catabolic process pyridine-containing compound catabolic process NAD+ biosynthetic process nucleotide biosynthetic process nucleobase-containing compound metabolic process purine nucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process phosphorus metabolic process NAD+ metabolic process pyridine nucleotide biosynthetic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process pyridine-containing compound biosynthetic process primary metabolic process nucleotide metabolic process nucleobase-containing compound biosynthetic process purine-containing compound metabolic process nicotinamide nucleotide biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process purine nucleotide biosynthetic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR022412	Quinolinate phosphoribosyl transferase, N-terminal	Domain
A, B	IPR037128	Quinolinate phosphoribosyl transferase, N-terminal domain superfamily	Homologous Superfamily
A, B	IPR013785	Aldolase-type TIM barrel	Homologous Superfamily
A, B	IPR004393	Nicotinate-nucleotide pyrophosphorylase	Family
A, B	IPR002638	Quinolinate phosphoribosyl transferase, C-terminal	Domain
A, B	IPR027277	Nicotinate-nucleotide pyrophosphorylase/Putative pyrophosphorylase ModD	Family
A, B	IPR036068	Nicotinate phosphoribosyltransferase-like, C-terminal	Homologous Superfamily

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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.