beta-Amylases (1,4-D-glucan maltohydrolase, EC 3.2.1.2) are exoenzymes that hydrolyze the alpha-1,4 glycosidic bonds of starch, from the non-reducing end, releasing mainly units of maltose with the inversion of the configuration of anomeric carbon from alpha to beta. These enzymes act on...
This result indicates that the molecular conformation of nigeran with its alpha-1,3-alt-alpha-1,4-glycosidic linkage is very stable despite chemical modification and retains high crystallinity.Togo, AzusaUechi, KeikoMizutani, OsamuKimura, SatoshiIwata, Tadahisa...
α-1,4-葡萄糖苷酶基因6) α-1,4 glycosidic linkage α-1,4糖苷键补充资料:α-葡萄糖苷酶抑制剂 分子式:CAS号:性质:抑制一类结构中含有α-葡萄糖苷键水解的抑制剂,其中包括部分蔗糖酶、麦芽糖酶和淀粉酶抑制剂。其中阿卡糖是最重要的淀粉酶抑制剂,临床上用于治疗肥胖症和糖尿症。萃他丁是两形链霉菌产生...
Biochem/physiol Actionsα-amylase catalyses the hydrolysis of α-1,4 glycosidic linkage in oligosaccharides. It plays a crucial role in the initial digestion of starch, glycogen and polysaccharides. Elevated levels of amylase in serum is linked to acute pancreatitis. ...
Due to the conformation of glucopyranose units, bound via α-1,4-glycosidic linkages, these supramolecular structures have incredible features. The inner space of the cyclodextrin molecule is hydrophobic, while the exterior is composed of hydroxyl groups, displaying polar or hydrophilic behavior. This ...
Influence of the glycosidic linkage on the solution conformation of glucans Abstract In order to gain a better understanding of the influence of β-glycosidic linkages on the solution conformation of glucans, a comparison was made between the carboxymethyl derivatives of cellulose (CMC, 100% 1,4-)...
Glycoside hydrolases are enzymes that catalyze the scission of the glycosidic bond. Despite the simplicity of the reaction they exist in a remarkable variety, numbering more than two hundred thousand known gene sequences grouped into mor... G Speciale 被引量: 0发表: 2016年 Serum glycosidase activ...
Our results indicate that the beta-(1-->4) glycosidic linkage shows some fluctuations between three low-energy regions, although it spends about 90% of its time in the region close to the global minimum. The observed conformation of methyl alpha-lactoside seems to be closer to that predicted...
Depending on the spatial structure of the glycosidic linkage between glucose, arbutin forms two epimers: α-arbutin and β-arbutin. C. Alpha arbutin VS beta arbutin Main Function 1. Alpha-arbutin Skin lighten,Whiten and dispell fleck, 2. Alpha-arbutin Prevent ultraviolet radiation....
Phosphatase of potato readily hydrolyzes natural starch phosphates (potato amylopectin)3092 and synthetically prepared starch phosphates,3093 leaving glycosidic bonds intact. On the other hand, corn starch can be phosphorylated with Na2HPO4 in the presence of isoamylase.3094 Phosphorylases (EC 2.4 and 2.7...