The Enzyme Database

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Accepted name: adenylate dimethylallyltransferase (AMP-dependent)
Reaction: prenyl diphosphate + AMP = diphosphate + N6-prenyladenosine 5′-phosphate
For diagram of N6-(Dimethylallyl)adenosine phosphates biosynthesis, click here
Glossary: prenyl = 3-methylbut-2-en-1-yl = dimethylallyl (ambiguous)
Other name(s): cytokinin synthase (ambiguous); isopentenyltransferase (ambiguous); 2-isopentenyl-diphosphate:AMP Δ2-isopentenyltransferase; adenylate isopentenyltransferase (ambiguous); IPT; adenylate dimethylallyltransferase; dimethylallyl-diphosphate:AMP dimethylallyltransferase
Systematic name: prenyl-diphosphate:AMP prenyltransferase
Comments: Involved in the biosynthesis of cytokinins in plants. Some isoforms from the plant Arabidopsis thaliana are specific for AMP while others also have the activity of EC, adenylate dimethylallyltransferase (ADP/ATP-dependent).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 72840-95-0
1.  Chen, C.-M. and Melitz, D.K. Cytokinin biosynthesis in a cell-free system from cytokinin-autotrophic tobacco tissue cultures. FEBS Lett. 107 (1979) 15–20. [DOI] [PMID: 499537]
2.  Takei, K., Sakakibara, H. and Sugiyama, T. Identification of genes encoding adenylate isopentenyltransferase, a cytokinin biosynthesis enzyme, in Arabidopsis thaliana. J. Biol. Chem. 276 (2001) 26405–26410. [DOI] [PMID: 11313355]
3.  Sakano, Y., Okada, Y., Matsunaga, A., Suwama, T., Kaneko, T., Ito, K., Noguchi, H. and Abe, I. Molecular cloning, expression, and characterization of adenylate isopentenyltransferase from hop (Humulus lupulus L.). Phytochemistry 65 (2004) 2439–2446. [DOI] [PMID: 15381407]
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