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A Glucosyltransferase Specific for 4-hydroxy-2,5-dimethyl-3(2H)-furanone in Strawberry

Aki Yamada, Kan'ichiro Ishiuchi, Toshiaki Makino, Hajime Mizukami, Kazuyoshi Terasaka

Biosci Biotechnol Biochem. 2018 Sep 29;1-8.

PMID: 30269657

Abstract:

4-Hydroxy-2,5-dimethyl-3(2H)-furanone (HDMF) is a key aroma compound in Fragaria × ananassa (strawberry). A considerable amount of HDMF is converted into HDMF β-D-glucoside and accumulated in mature strawberry fruits. Here we isolated a novel UDP-glucose: HDMF glucosyltransferase, UGT85K16 from Fragaria × ananassa. UGT85K16 preferentially glucosylated the hydroxyl group of HDMF and its structural analogs. Although UGT85K16 also catalyzed the glucosylation of vanillin, its affinity and efficiency toward HDMF was higher. The expression of UGT85K16 mRNA correlated with the accumulation of HDMF and its glucoside in Fragaria × ananassa plants. These results suggest that UGT85K16 might be UDP-glucose: HDMF glucosyltransferase in strawberries.
Abbreviations:
DMMF: 2,5-dimethyl-4-methoxy-3(2H)-furanone; EHMF: 2(5)-ethyl-4-hydroxy-5(2)-methyl-3(2H)-furanone; GBV: glycosidically bound volatile; HDMF: 4-hydroxy-2,5-dimethyl-3(2H)-furanone; HMF: 4-hydroxy-5-methyl-3(2H)-furanone; HMMF: 4-hydroxy-5-methyl-2-methylene-3(2H)-furanone; PSPG: Plant secondary product glycosyltransferase; RT-PCR: reverse transcription-PCR; OMT: O-methyltransferase; UGT: UDP-glycosyltransferase.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP3658773 4-Hydroxy-2,5-dimethyl-3(2H)-furanone 4-Hydroxy-2,5-dimethyl-3(2H)-furanone 3658-77-3 Price
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