6ORA

An Unexpected Intermediate in the Reaction Catalyzed by Quinolinate Synthase

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 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	d6oraa_	Alpha and beta proteins (a/b)	NadA-like	NadA-like	NadA-like	Quinolinate synthetase A, NadA	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)
B	d6orab_	Alpha and beta proteins (a/b)	NadA-like	NadA-like	NadA-like	Quinolinate synthetase A, NadA	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	NadA-like	8033469	3000509	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	NadA-like	8033469	3000509	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	NadA	e6oraA1	A: a/b three-layered sandwiches	X: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase (From Topology)	H: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase (From Topology)	T: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase	F: NadA	ECOD (1.6)
B	NadA	e6oraB1	A: a/b three-layered sandwiches	X: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase (From Topology)	H: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase (From Topology)	T: NadA-like/4-hydroxy-3-methylbut-2-enyl diphosphate reductase	F: NadA	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.10800	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NadA-like	CATH (utative)
B	3.40.50.10800	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NadA-like	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02445	Quinolinate synthetase A protein (NadA)	Quinolinate synthetase A protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Quinolinate synthase A	quinolinate synthetase A activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding ion binding metal ion binding	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 pyridine-containing compound metabolic process small molecule metabolic process phosphorus metabolic process pyridine nucleotide metabolic process NAD biosynthetic process pyridine nucleotide biosynthetic process nucleoside phosphate metabolic 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 pyridine-containing compound metabolic process small molecule metabolic process phosphorus metabolic process pyridine nucleotide metabolic process NAD biosynthetic process pyridine nucleotide biosynthetic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process cellular 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 metabolic process cellular 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	IPR003473	Quinolinate synthetase A	Family
A, B	IPR023066	Quinolinate synthase A, type 2	Family
A, B	IPR036094	Quinolinate synthetase A superfamily	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.