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재래귤의 성숙시기별 리모노이드 쓴맛 표시자로서 Limonoid UDP-glucosyltransferase 발현 분석
김영미 ( Young Mee Kim ),이도승 ( Do Seung Lee ),전덕현 ( Deok Hyoen Jeon ),송연우 ( Yeon Woo Song ),이동선 ( Dong Sun Lee ),류기종 ( Key Zung Ryu ),조문제 ( Moon Jae Cho ),이동훈 ( Dong Hoon Lee ),김소미 ( So Mi Kim ) 한국식품저장유통학회(구 한국농산물저장유통학회) 2011 한국식품저장유통학회지 Vol.18 No.2
Limonoid UDP-glucosyltransferase (LUGT) is an enzyme that converts limonoids into their corresponding glucosides and ultimately ameliorates limonoid bitterness in Citrus species. In this paper, the LUGT gene was cloned via PCR from 10 Jeju Citrus species. All the deduced glucosyltransferase proteins harbored a highly conserved plant secondary product glucosyltransferase (PSPG) motif within the C terminal region. Phylogenetic analysis based on the amino acid sequence comparison of the LUGT proteins from 10 Citrus species generated three distinct types. The expression patterns of LUGT gene in three representative species from each type were quite different with that of C. unshiu Marc. cv. Miyagawawase(Gungcheon), which his without distinctive juice delayed bitterness. Ourresultssho wth at some Citrus speciessuchas Citrusleiocarpa HORT(Bingul), Citruserythrosa HORT (Dongjunggul), and Citrustachibana TANAKA(Honggul) end emicin Jeju maybe susceptible to intense juice delayed bitterness due to delay inexpression of LUGT.