EC	2.4.1.104
Accepted name:	o-dihydroxycoumarin 7-O-glucosyltransferase
Reaction:	UDP-glucose + 7,8-dihydroxycoumarin = UDP + daphnin
Other name(s):	uridine diphosphoglucose-o-dihydroxycoumarin 7-O-glucosyltransferase; UDP-glucose:o-dihydroxycoumarin glucosyltransferase
Systematic name:	UDP-glucose:7,8-dihydroxycoumarin 7-O-β-D-glucosyltransferase
Comments:	Converts the aglycone daphetin into daphnin and, more slowly, esculetin into cichoriin, umbelliferone into skimmin, hydrangetin into hydrangin and scopoletin into scopolin.
References:	1.  Ibrahim, R.K. and Boulay, B. Purification and some properties of UDP-glucose:o-hydroxycoumarin 7-O-glucosyltransferase from tobacco cell cultures. Plant Sci. Lett. 18 (1980) 177–184.
[EC 2.4.1.104 created 1983]
EC	2.5.1.138
Accepted name:	coumarin 8-geranyltransferase
Reaction:	(1) geranyl diphosphate + umbelliferone = diphosphate + 8-geranylumbelliferone (2) geranyl diphosphate + esculetin = diphosphate + 8-geranylesculetin
Glossary:	geranyl diphosphate = (2E)-3,7-dimethylocta-2,6-dien-1-yl diphosphate esculetin = 6,7-dihydroxy-1-benzopyran-2-one = 6,7-dihydroxycoumarin umbelliferone = 7-hydroxy-1-benzopyran-2-one = 7-hydroxycoumarin
Other name(s):	ClPT1
Systematic name:	geranyl-diphosphate:umbelliferone 8-geranyltransferase
Comments:	The enzyme, characterized from the plant Citrus limon, is specific for geranyl diphosphate as a prenyl donor. It also has low activity with the coumarins 5,7-dihydroxycoumarin and 5-methoxy-7-hydroxycoumarin.
References:	1.  Munakata, R., Inoue, T., Koeduka, T., Karamat, F., Olry, A., Sugiyama, A., Takanashi, K., Dugrand, A., Froelicher, Y., Tanaka, R., Uto, Y., Hori, H., Azuma, J., Hehn, A., Bourgaud, F. and Yazaki, K. Molecular cloning and characterization of a geranyl diphosphate-specific aromatic prenyltransferase from lemon. Plant Physiol. 166 (2014) 80–90. [PMID: 25077796]
[EC 2.5.1.138 created 2017]