Zeatin 9-aminocarboxyethyltransferase
In enzymology, a zeatin 9-aminocarboxyethyltransferase (EC 2.5.1.50) is an enzyme that catalyzes the chemical reaction
- O-acetyl-L-serine + zeatin lupinate + acetate
| zeatin 9-aminocarboxyethyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.5.1.50 | ||||||||
| CAS number | 62683-23-2 | ||||||||
| 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 | ||||||||
| |||||||||
Thus, the two substrates of this enzyme are O-acetyl-L-serine and zeatin, whereas its two products are lupinate and acetate.
This enzyme belongs to the family of transferases, specifically those transferring aryl or alkyl groups other than methyl groups. The systematic name of this enzyme class is O3-acetyl-L-serine:zeatin 2-amino-2-carboxyethyltransferase. Other names in common use include beta-(9-cytokinin)-alanine synthase, beta-(9-cytokinin)alanine synthase, O-acetyl-L-serine acetate-lyase (adding N6-substituted adenine), lupinate synthetase, lupinic acid synthase, lupinic acid synthetase, and 3-O-acetyl-L-serine:zeatin 2-amino-2-carboxyethyltransferase.
References
- Entsch B, Parker CW, Letham DS (1983). "An enzyme from lupin seeds forming alanine derivatives of cytokinins". Phytochemistry. 22 (2): 375–381. doi:10.1016/0031-9422(83)83008-8.
- Mok DWS; Mok MC (2001). "Cytokinin metabolism and action". Annu. Rev. Plant Physiol. Plant Mol. Biol. 52: 89–118. doi:10.1146/annurev.arplant.52.1.89. PMID 11337393.