Zeatin 9-aminocarboxyethyltransferase

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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

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.

[edit] References

• IUBMB entry for 2.5.1.50
• BRENDA references for 2.5.1.50 (Recommended.)
• PubMed references for 2.5.1.50
• PubMed Central references for 2.5.1.50
• Google Scholar references for 2.5.1.50
• Entsch B, Parker CW and Letham DS (1983). "An enzyme from lupin seeds forming alanine derivatives of cytokinins". Phytochemistry 22: 375–381. 
• Mok DWS and Mok MC (2001). "Cytokinin metabolism and action". Ann. Rev. Plant Physiol. Plant Mol. Biol. 52: 89–118. 

[edit] External links

The CAS registry number for this enzyme class is 62683-23-2.

• IUBMB entry for 2.5.1.50

• KEGG entry for 2.5.1.50

• BRENDA entry for 2.5.1.50

• NiceZyme view of 2.5.1.50

• EC2PDB: PDB structures for 2.5.1.50

• PRIAM entry for 2.5.1.50

• PUMA2 entry for 2.5.1.50

• IntEnz: Integrated Enzyme entry for 2.5.1.50

• MetaCyc entry for 2.5.1.50

• Atomic-resolution structures of enzymes belonging to this class

[edit] Gene Ontology (GO) codes

• EGO entry for GO code 0050447: zeatin 9-aminocarboxyethyltransferase

• AMIGO entry for GO code 0050447: zeatin 9-aminocarboxyethyltransferase