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 number2.5.1.50
CAS number62683-23-2
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / 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.


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