ExplorEnz: EC 2.5.1.70

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2.5.1.70

Accepted name:

naringenin 8-dimethylallyltransferase

Reaction:

prenyl diphosphate + (–)-(2S)-naringenin = diphosphate + sophoraflavanone B

For diagram of sophoraflavanone G biosynthesis, click here

Glossary:

dimethylallyl = prenyl = 3-methylbut-2-en-1-yl
(–)-(2S)-naringenin = (–)-(2S)-5,7-dihydroxy-2-(4-hydroxyphenyl)-2,3-dihydrochromen-4-one
sophoraflavanone B = (–)-(2S)-8-prenylnaringenin = (–)-(2S)-5,7-dihydroxy-2-(4-hydroxyphenyl)-8-(3-methylbut-2-en-1-yl)-2,3-dihydrochromen-4-one

Other name(s):

N8DT; dimethylallyl-diphosphate:naringenin 8-dimethylallyltransferase

Systematic name:

prenyl-diphosphate:naringenin 8-prenyltransferase

Comments:

Requires Mg²⁺. This membrane-bound protein is located in the plastids [2]. In addition to naringenin, the enzyme can prenylate several other flavanones at the C-8 position, but more slowly. Along with EC 1.14.14.142 (8-dimethylallylnaringenin 2′-hydroxylase) and EC 2.5.1.71 (leachianone-G 2′′-dimethylallyltransferase), this enzyme forms part of the sophoraflavanone-G-biosynthesis pathway.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc

References:

1.	Yamamoto, H., Senda, M. and Inoue, K. Flavanone 8-dimethylallyltransferase in Sophora flavescens cell suspension cultures. Phytochemistry 54 (2000) 649–655. [DOI] [PMID: 10975499]
2.	Zhao, P., Inoue, K., Kouno, I. and Yamamoto, H. Characterization of leachianone G 2′′-dimethylallyltransferase, a novel prenyl side-chain elongation enzyme for the formation of the lavandulyl group of sophoraflavanone G in Sophora flavescens Ait. cell suspension cultures. Plant Physiol. 133 (2003) 1306–1313. [DOI] [PMID: 14551337]

[EC 2.5.1.70 created 2007]