糖合成

Rhamnose synthase plays a key role in rhamnose synthesis which converts UDP-D-glucose into UDP-L-rhamnose in plants.

植物中， UDP-L-鼠李糖是细胞壁骨架的主要成分，由鼠李糖合成酶催化底物UDP-a-D-葡萄糖合成。

Functinal complementation test showed that trehalose-6-phosphate synthase mutant (tps1△), transformed by the open reading frame of SpTPS1 gene, restored growth on the mediam supplemented with glucose as a sole carbon source. This result indicated that trehalose-6-phosphate synthase gene (SpTPS1) of Selaginella pulvinata has biologically activity and is hopful to be applied to transgeneic improvement of plant for abiotic stress tolerance.

酵母功能互补试验证明，用SpTPS1基因开放阅读框转化的海藻糖合成酶基因突变（tps1△）酵母菌株，可恢复在以葡萄糖作为唯一碳源培养基上的生长，说明垫状巻柏海藻糖-6-磷酸合成酶基因SpTPS1具有生物活性，可能应用于植物抗逆性的转基因改良。

Compared with that of parental strain Y7. The factors affecting the trehalose production were studied in this paper.

培养条件对海藻糖合成影响较大，本文对影响海藻糖合成的各种因素进行了优化。

TPP gene plays an important role in synthesis of trehalose. The cloning of TPP gene lays a solid basis for investigating the biosynthesis of trehalose in L. bicolor.

海藻糖－6-磷酸磷酸酯酶在海藻糖合成过程中起关键作用，该基因的克隆为研究海藻糖在二色补血草中的合成奠定了基础。

Results Two bicyclic azasugars and a thiosugar were produced from L-sorbose in several steps.

结果 经几步反应成功地从L-山梨糖合成了三种双环氮杂糖和硫杂糖。

The mechanism in which trehalose is produced from dextrin or starch hydrolyzate by endocellular enzymes of bacterium D-97 can be elucidated by high performance liquid chromatography with differential refraction detection basically, including the effect of the different carbon sources on the endocellular trehalose-producing enzymes in bacterium D-97 and the possibility or ability of the endocellular enzymes to produce trehalose using maltooligosaccharides of different chain lengths.

通过高效液相色谱/示差折光检测系统分析可获得细菌D-97利用糊精或淀粉水解物合成海藻糖的基本生物学信息，包括微生物培养碳源对细菌D-97胞内海藻糖合成酶系的影响以及该酶系利用不同种类或不同分子链长度的麦芽寡糖合成海藻糖的能力及作用过程。

By the partial purification of Arthrobacter nicotinovorus D-97 endocellular enzymes and the results of enzymatic reaction of enzymes of partition collection, it was found that enzymes related to trehalose synthesis were consisted of Trehalose-forming Enzyme and Trehalose-releasing Enzyme . Trehalose-forming Enzyme could convert maltooligosaccharides into non-reducing maltooligosyl trehalose by intramolecular transglycosylation, and Trehalose-releasing Enzyme could hydrolyze α-1, 4 linkage between the trehalose residue and the maltooligosaccharide residue to release trehalose and maltooligosaccharides with two glucose monomer lesser.

将食尼古丁节杆菌D-97胞内酶部分纯化并对各收集组分进行酶反应，发现其海藻糖合成酶系由海藻糖生成酶(Trehalose-forming Enzyme，TFE)和海藻糖释放酶(Trehalose-releasingEnzyme，TRE)组成，前者分子内转糖基将直链麦芽寡糖转化为没有还原性的麦芽寡糖基海藻糖，后者专一切割麦芽寡糖基海藻糖分子上麦芽寡糖基与海藻糖连接的α-1，4糖苷键，从而释放出海藻糖和减少了两个葡萄糖单体的麦芽寡糖。

In plant,the enzymes of RFO,such as galactinol synthase,myo inositol-1-phosphate synthase, raffinose synthase and stachyose synthase,are linked with the RFO pathw.

寡糖代谢是一个复杂的调控体系，其中肌醇-1-磷酸合成酶、肌醇半乳糖苷合成酶、蔗糖合成酶、棉子糖合成酶、水苏糖合成酶和毛蕊花糖合成酶等参与了棉子糖系列寡糖的生物合成过程。

Glycosyl sulfides and glycosyl sulfoxides are useful synthetic intermediates or synthons.

糖基硫苷和糖基亚砜是寡糖合成中的重要中间体或合成子。

Trehalose-6-phosphate synthase, a key enzyme in trehalose synthesis pathway of plant, plays an important role in response of exrophilous rock lily and other resurrection plants to severe abiotec stress.

海藻糖-6-磷酸合成酶是植物海藻糖合成途径的关键酶，在旱生巻柏等复苏植物对逆境胁迫应答中起重要作用。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。