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Literature summary extracted from

  • Miyawaki, K.; Tarkowski, P.; Matsumoto-Kitano, M.; Kato, T.; Sato, S.; Tarkowska, D.; Tabata, S.; Sandberg, G.; Kakimoto, T.
    Roles of Arabidopsis ATP/ADP isopentenyltransferases and tRNA isopentenyltransferases in cytokinin biosynthesis (2006), Proc. Natl. Acad. Sci. USA, 103, 16598-16603.
    View publication on PubMedView publication on EuropePMC

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.5.1.112 dimethylallyl diphosphate + ADP Arabidopsis thaliana
-
 diphosphate + N6-(dimethylallyl)adenosine 5'-diphosphate
-
 ?
2.5.1.112 dimethylallyl diphosphate + ATP Arabidopsis thaliana
-
 diphosphate + N6-(dimethylallyl)adenosine 5'-triphosphate
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
2.5.1.75 Arabidopsis thaliana
-
-
-
2.5.1.112 Arabidopsis thaliana Q93WC9
-
-
2.5.1.112 Arabidopsis thaliana Q94ID1
-
-
2.5.1.112 Arabidopsis thaliana Q94ID2
-
-
2.5.1.112 Arabidopsis thaliana Q94ID3
-
-
2.5.1.112 Arabidopsis thaliana Q9C6L1
-
-
2.5.1.112 Arabidopsis thaliana Q9LJL4
-
-
2.5.1.112 Arabidopsis thaliana Q9SB60
-
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.5.1.75 plant
-
 Arabidopsis thaliana
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.5.1.75 dimethylallyl diphosphate + adenine37 in tRNA
-
 Arabidopsis thaliana diphosphate + N6-dimethylallyladenine37 in tRNA
-
 ?
2.5.1.112 dimethylallyl diphosphate + ADP
-
 Arabidopsis thaliana diphosphate + N6-(dimethylallyl)adenosine 5'-diphosphate
-
 ?
2.5.1.112 dimethylallyl diphosphate + ATP
-
 Arabidopsis thaliana diphosphate + N6-(dimethylallyl)adenosine 5'-triphosphate
-
 ?

Synonyms

EC Number Synonyms Comment Organism
2.5.1.75 IPT2
-
 Arabidopsis thaliana
2.5.1.75 IPT9
-
 Arabidopsis thaliana
2.5.1.75 tRNA IPT
-
 Arabidopsis thaliana
2.5.1.75 tRNA isopentenyltransferase
-
 Arabidopsis thaliana
2.5.1.112 ATP/ADP IPT
-
 Arabidopsis thaliana
2.5.1.112 ATP/ADP isopentenyltransferase
-
 Arabidopsis thaliana
2.5.1.112 IPT1 isoform Arabidopsis thaliana
2.5.1.112 IPT3 isoform Arabidopsis thaliana
2.5.1.112 IPT4 isoform Arabidopsis thaliana
2.5.1.112 IPT5 isoform Arabidopsis thaliana
2.5.1.112 IPT6 isoform Arabidopsis thaliana
2.5.1.112 IPT7 isoform Arabidopsis thaliana
2.5.1.112 IPT8 isoform Arabidopsis thaliana

Cofactor

EC Number Cofactor Comment Organism Structure
2.5.1.112 ADP
-
 Arabidopsis thaliana
2.5.1.112 ATP
-
 Arabidopsis thaliana

General Information

EC Number General Information Comment Organism
2.5.1.112 malfunction the ipt1357 quadruple mutant possesses severely decreased levels of isopentenyladenine and trans-zeatin , and their corresponding ribosides, ribotides, and glucosides, and is retarded in its growth. In contrast, these mutants possess increased levels of cis-zeatin-type cytokinins Arabidopsis thaliana
2.5.1.112 metabolism the enzyme isoforms are responsible for the bulk of isopentenyladenine- and trans-zeatin-type cytokinin synthesis Arabidopsis thaliana