2.4.1.128 additional information the enzyme shows activity towards a number of coumarins including umbelliferone, scopoletin, isoscopoletin and esculetin, and flavonoids including a flavone, a flavanone and chalcones. No activity is detected with compounds characterized by a single aromatic ring, i.e. simple and acidic phenols Catharanthus roseus ? - ? 89 2.4.1.128 additional information UGT73A25 appears to promote the formation of flavonoid rutinosides and a kaempferol diglucoside, while UGT73A24 does not Nicotiana benthamiana ? - - 89 2.4.1.128 additional information broad substrate specificity of NbUGT73A25, detailed overview. Enzymes UGT73A24 and UGT73A25 show the highest activity towards kaempferol Nicotiana benthamiana ? - - 89 2.4.1.128 UDP-glucose + carvacrol - Nicotiana benthamiana UDP + carvacrol - ? 458315 2.4.1.128 UDP-glucose + kaempferol best substrate Nicotiana benthamiana UDP + ? - ? 457326 2.4.1.128 UDP-glucose + kaempferol - Nicotiana benthamiana UDP + kaempferol 3,7-diglucoside - ? 457327 2.4.1.128 UDP-glucose + kaempferol best substrate Nicotiana benthamiana UDP + kaempferol 3,7-diglucoside - ? 457327 2.4.1.128 UDP-glucose + N-4-trans-coumaroyl tyramine - Nicotiana benthamiana UDP + ? - ? 458323 2.4.1.128 UDP-glucose + N-caffeoyl-O-methyl tyramine - Nicotiana benthamiana UDP + ? - ? 458324 2.4.1.128 UDP-glucose + N-trans-feruloyl tyramine - Nicotiana benthamiana UDP + ? - ? 457329