Homoglutathione synthase
In enzymology, a homoglutathione synthase (EC 6.3.2.23) is an enzyme that catalyzes the chemical reaction
- ATP + γ-L-glutamyl-L-cysteine + β-alanine ADP + phosphate + γ-Lglutamyl-L-cysteinyl-β-alanine
| Homoglutathione synthase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 6.3.2.23 | ||||||||
| CAS no. | 113875-72-2 | ||||||||
| 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 / QuickGO | ||||||||
| |||||||||
The 3 substrates of this enzyme are ATP, gamma-L-glutamyl-L-cysteine, and beta-alanine, whereas its 3 products are ADP, phosphate, and gamma-L-glutamyl-L-cysteinyl-beta-alanine.
This enzyme belongs to the family of ligases, specifically those forming carbon-nitrogen bonds as acid-D-amino-acid ligases (peptide synthases). The systematic name of this enzyme class is gamma-L-glutamyl-L-cysteine:beta-alanine ligase (ADP-forming). Other names in common use include homoglutathione synthetase, and beta-alanine specific hGSH synthetase.
References
- Macnicol PK (1987). "Homoglutathione and glutathione synthetases of legume seedlings - partial-purification and substrate-specificity". Plant Sci. 53 (3): 229–235. doi:10.1016/0168-9452(87)90159-2.
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