EC - Zeatin 9-aminocarboxyethyltransferase

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IntEnz Enzyme Nomenclature


Accepted name:
zeatin 9-aminocarboxyethyltransferase
Other names:
O-acetyl-L-serine acetate-lyase (adding N6-substituted adenine)
β-(9-cytokinin)-alanine synthase
β-(9-cytokinin)alanine synthase
lupinate synthetase
lupinic acid synthase
lupinic acid synthetase
3-O-acetyl-L-serine:zeatin 2-amino-2-carboxyethyltransferase
O3-acetyl-L-serine:zeatin 2-amino-2-carboxyethyltransferase
Systematic name:
O-acetyl-L-serine:zeatin 2-amino-2-carboxyethyltransferase



The enzyme acts not only on zeatin but also on other N6-substituted adenines. The reaction destroys their cytokinin activity and forms the corresponding 3-(adenin-9-yl)-L-alanine. Formerly EC

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , DIAGRAM , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0050447
CAS Registry Number: 62683-23-2


  1. Entsch, B., Parker, C.W. and Letham, D.S.
    An enzyme from lupin seeds forming alanine derivatives of cytokinins.
    Phytochemistry 22 : 375-381 (1983).
  2. Mok, D.W.S. and Mok, M.C.
    Cytokinin metabolism and action.
    Ann. Rev. Plant Physiol. Plant Mol. Biol. 52 : 89-118 (2001).

[EC created 1984 as EC, transferred 2002 to EC]