Glutamate synthase (NADPH)
| glutamate synthase (NADPH) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 270px
Glutamate synthase dodekamer, Azospirillum br.
|
|||||||||
| Identifiers | |||||||||
| EC number | 1.4.1.13 | ||||||||
| CAS number | Template:CAS | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / EGO | ||||||||
|
|||||||||
In enzymology, a glutamate synthase (NADPH) (EC 1.4.1.13) is an enzyme that catalyzes the chemical reaction
- L-glutamine + 2-oxoglutarate + NADPH + H+
2 L-glutamate + NADP+
Thus, the four substrates of this enzyme are L-glutamine, 2-oxoglutarate (α-ketoglutarate), NADPH, and H+, whereas the two products are L-glutamate and NADP+.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH2 group of donors with NAD+ or NADP+ as acceptor. This enzyme participates in glutamate metabolism and nitrogen metabolism. It has 5 cofactors: FAD, Iron, FMN, Sulfur, and Iron-sulfur.
It occurs in bacteria and plants but not animals, and is important as it provides glutamate for the glutamine synthetase reaction.[1][2]
Nomenclature
The systematic name of this enzyme class is L-glutamate:NADP+ oxidoreductase (transaminating). Other names in common use include:
<templatestyles src="Div col/styles.css"/>
- glutamate (reduced nicotinamide adenine dinucleotide phosphate), synthase,
- glutamate synthase (NADPH),
- glutamate synthetase (NADP),
- glutamine amide-2-oxoglutarate aminotransferase (oxidoreductase, NADP),
- glutamine-ketoglutaric aminotransferase,
- L-glutamate synthase,
- L-glutamate synthetase,
- L-glutamine:2-oxoglutarate aminotransferase, NADPH oxidizing,
- NADPH-dependent glutamate synthase,
- NADPH-glutamate synthase, and
- NADPH-linked glutamate synthase.
Structural studies
As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code 1EA0.
See also
References
Further reading
- Lua error in package.lua at line 80: module 'strict' not found.
- Lua error in package.lua at line 80: module 'strict' not found.
<templatestyles src="Asbox/styles.css"></templatestyles>
