2B7P

Crystal structure of quinolinic acid phosphoribosyltransferase from Helicobacter pylori with phthalic acid

External Resource: Annotation

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2b7pa2	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Nicotinate/Quinolinate PRTase C-terminal domain-like	automated matches	automated matches	(Helicobacter pylori ) [TaxId: 210 ],	SCOPe (2.08)
A	d2b7pa1	Alpha and beta proteins (a+b)	alpha/beta-Hammerhead	Nicotinate/Quinolinate PRTase N-terminal domain-like	automated matches	automated matches	(Helicobacter pylori ) [TaxId: 210 ],	SCOPe (2.08)
B	d2b7pb2	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Nicotinate/Quinolinate PRTase C-terminal domain-like	automated matches	automated matches	(Helicobacter pylori ) [TaxId: 210 ],	SCOPe (2.08)
B	d2b7pb1	Alpha and beta proteins (a+b)	alpha/beta-Hammerhead	Nicotinate/Quinolinate PRTase N-terminal domain-like	automated matches	automated matches	(Helicobacter pylori ) [TaxId: 210 ],	SCOPe (2.08)
C	d2b7pc2	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Nicotinate/Quinolinate PRTase C-terminal domain-like	automated matches	automated matches	(Helicobacter pylori ) [TaxId: 210 ],	SCOPe (2.08)
C	d2b7pc1	Alpha and beta proteins (a+b)	alpha/beta-Hammerhead	Nicotinate/Quinolinate PRTase N-terminal domain-like	automated matches	automated matches	(Helicobacter pylori ) [TaxId: 210 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	QRPTase_N	e2b7pA1	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Nicotinate/Quinolinate PRTase N-terminal domain-like	F: QRPTase_N	ECOD (1.6)
A	QRPTase_C	e2b7pA2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: QRPTase_C	ECOD (1.6)
B	QRPTase_N	e2b7pB1	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Nicotinate/Quinolinate PRTase N-terminal domain-like	F: QRPTase_N	ECOD (1.6)
B	QRPTase_C	e2b7pB2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: QRPTase_C	ECOD (1.6)
C	QRPTase_N	e2b7pC1	A: a+b complex topology	X: alpha/beta-Hammerhead/Barrel-sandwich hybrid	H: alpha/beta-Hammerhead/Barrel-sandwich hybrid	T: Nicotinate/Quinolinate PRTase N-terminal domain-like	F: QRPTase_N	ECOD (1.6)
C	QRPTase_C	e2b7pC2	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: QRPTase_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)
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)
C	3.90.1170.20	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)
C	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, C	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, C	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, C	Probable nicotinate-nucleotide pyrophosphorylase	pentosyltransferase activity glycosyltransferase activity nicotinate-nucleotide diphosphorylase (carboxylating) activity transferase activity catalytic activity	quinolinate metabolic process catabolic process oxoacid metabolic process cellular metabolic process dicarboxylic acid metabolic process carboxylic acid metabolic process dicarboxylic acid catabolic process organic acid metabolic process organic acid catabolic process cellular catabolic process quinolinate catabolic process carboxylic acid catabolic process pyridine-containing compound metabolic process small molecule metabolic process quinolinate metabolic process catabolic process oxoacid metabolic process cellular metabolic process dicarboxylic acid metabolic process carboxylic acid metabolic process dicarboxylic acid catabolic process organic acid metabolic process organic acid catabolic process cellular 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 nucleotide biosynthetic process NAD metabolic process nucleobase-containing compound metabolic process purine nucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process phosphate-containing compound metabolic process phosphorus metabolic process pyridine nucleotide metabolic process NAD biosynthetic 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	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

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