2.5.1.112: adenylate dimethylallyltransferase (ADP/ATP-dependent)
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Reaction
Synonyms
2-isopentenyl-diphosphate:ADP/ATP DELTA2-isopentenyltransferase, adenylate isopentenyltransferase, AIPT, ATP/ADP IPT, ATP/ADP isopentenyltransferase, cytokinin synthase, dimethylallyl diphosphate:ATP/ADP isopentenyltransferase, IPT, IPT1, IPT2, IPT3, IPT4, IPT5, IPT5a, IPT5b, IPT6, IPT7, IPT8, isopentenyl transferase 2, isopentenyltransferase
ECTree
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Expression
Expression on EC 2.5.1.112 - adenylate dimethylallyltransferase (ADP/ATP-dependent)
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after decapitation, the expression levels of IPT1, IPT3, and IPT5a in nodal stems sharply increase
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auxin response factor ARF3 directly binds to the promoter of IPT5 and negatively regulates IPT5 expression
enzyme expression is developmentally regulated in kernel tissues and coincides with cytokinin accumulation. The expression gradually increases from 6 to 8 days after pollination (DAP), peaks at 8 DAP, and decreases gradually until 14 DAP before increasing again at later stages (15-34 DAP)
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enzyme expression levels decrease significantly in pulp within 2 weeks after flowering and remain low
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isoform IPT1 is down-regulated by the cytokinin 4-(indol-3-yl)butyric acid within 4 h
isoform IPT3 is down-regulated by the cytokinin 4-(indol-3-yl)butyric acid within 4 h
isoform IPT3 is rapidly induced by 1 h treatment with nitrate
isoform IPT3 is upregulated within 2 h after the application of tungstate, methionine sulfoximine or nitrate to N-deprived peach seedlings, and the increase is resistant to pre-treatment of a specific nitrate metabolism inhibitor. Isoform IPT5 in seed increases significantly within 2 weeks after flowering. The enzyme expression also increases significantly during later fruit development in seed
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isoform IPT5 is down-regulated by the cytokinin 4-(indol-3-yl)butyric acid within 4 h
isoform IPT5 is up-regulated by 4,4'-isopropylidenediphenol (bisphenol A) treatment for 4 h
isoform IPT7 is down-regulated by the cytokinin 4-(indol-3-yl)butyric acid within 4 h