mogroside IE;Mogroside I E1;(2R,3R,4S,5S,6R)-2-[[(3S,8S,9R,10R,11R,13R,14S,17R)-17-[(2R,5R)-5,6-dihydroxy-6-methylheptan-2-yl]-11-hydroxy-4,4,9,13,14-pentamethyl-2,3,7,8,10,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-6-(hydroxymethyl)oxane-3,4,5-triol
CAS
88901-39-7
化学式
C36H62O9
mdl
——
分子量
638.883
InChiKey
LLZGAVAIPZROOJ-FDWAMWGASA-N
BEILSTEIN
——
EINECS
——
物化性质
计算性质
ADMET
安全信息
SDS
制备方法与用途
上下游信息
反应信息
文献信息
表征谱图
同类化合物
相关功能分类
相关结构分类
物化性质
沸点:
759.3±60.0 °C(Predicted)
密度:
1.23±0.1 g/cm3(Predicted)
计算性质
辛醇/水分配系数(LogP):
3.8
重原子数:
45
可旋转键数:
8
环数:
5.0
sp3杂化的碳原子比例:
0.94
拓扑面积:
160
氢给体数:
7
氢受体数:
9
安全信息
储存条件:
-20°C
制备方法与用途
生物活性方面,Mogroside I E1 是一种从罗汉果提取物中分离出的三萜糖苷,具有非糖类甜味剂的特点。其甜度远超蔗糖,并且展现出强大的抗氧化、抗糖尿病以及抗癌活性。
Functional Characterization of Cucurbitadienol Synthase and Triterpene Glycosyltransferase Involved in Biosynthesis of Mogrosides from Siraitia grosvenorii
作者:Longhai Dai、Can Liu、Yueming Zhu、Jiangsheng Zhang、Yan Men、Yan Zeng、Yuanxia Sun
DOI:10.1093/pcp/pcv043
日期:2015.6
Mogrosides, the major bioactive components isolated from the fruits of Siraitia grosvenorii, are a family of cucurbitane-type tetracyclic triterpenoid saponins that are used worldwide as high-potency sweeteners and possess a variety of notable pharmacological activities. Mogrosides are synthesized from 2,3-oxidosqualene via a series of reactions catalyzed by cucurbitadienol synthase (CbQ), Cyt P450s (P450s) and UDP glycosyltransferases (UGTs) in vivo. However, the relevant genes have not been characterized to date. In this study, we report successful identification of SgCbQ and UGT74AC1, which were previously predicted via RNA-sequencing (RNA-seq) and digital gene expression (DGE) profile analysis of the fruits of S. grosvenorii. SgCbQ was functionally characterized by expression in the lanosterol synthase-deficient yeast strain GIL77 and was found to accumulate cucurbitadienol as the sole product. UGT74AC1 was heterologously expressed in Escherichia coli as a His-tag protein and it showed specificity for mogrol by transfer of a glucose moiety to the C-3 hydroxyl to form mogroside IE by in vitro enzymatic activity assays. This study reports the identification of CbQ and glycosyltransferase from S. grosvenorii for the first time. The results also suggest that RNA-seq, combined with DGE profile analysis, is a promising approach for discovery of candidate genes involved in biosynthesis of triterpene saponins.
wild-type enzyme and conserved regioselectivity. Based on the results of molecular docking and molecular dynamics simulations, it was proposed that the improved enzymatic activity and substrate promiscuity were likely owing to the stable hydrophobic interactions and favorite conformations between the enzyme and substrates. This work has also laid a foundation for the engineering of other plant UGTs for their