CATH Classification
Level | CATH Code | Description |
---|---|---|
3 | Alpha Beta | |
3.20 | Alpha-Beta Barrel | |
3.20.20 | TIM Barrel | |
3.20.20.70 | Aldolase class I |
Domain Context
CATH Clusters
Superfamily | Aldolase class I |
Functional Family | Nicotinate-nucleotide pyrophosphorylase [carboxylating] |
Enzyme Information
2.4.2.19 |
Nicotinate-nucleotide diphosphorylase (carboxylating).
based on mapping to UniProt Q15274
Beta-nicotinate D-ribonucleotide + diphosphate + CO(2) = pyridine-2,3- dicarboxylate + 5-phospho-alpha-D-ribose 1-diphosphate.
-!- The reaction is catalyzed in the opposite direction. -!- Since quinolinate is synthesized from L-tryptophan in eukaryotes, but from L-aspartate in some prokaryotes, this is the first NAD(+) biosynthesis enzyme shared by both eukaryotes and prokaryotes.
|
UniProtKB Entries (1)
Q15274 |
NADC_HUMAN
Homo sapiens
Nicotinate-nucleotide pyrophosphorylase [carboxylating]
|
PDB Structure
PDB | 2JBM |
External Links | |
Method | X-RAY DIFFRACTION |
Organism | |
Primary Citation |
Structural and Kinetic Characterization of Quinolinate Phosphoribosyltransferase (Hqprtase) from Homo Sapiens.
J.Mol.Biol.
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