专业英语修改.ppt

难句来了！！！ The principal components of this complex are proteoglycans, the structure of which contains up to 150 polysaccharide chains attached to serine residues of a single core protein. The structure of which…引导非限定性定语从句，修饰proteoglycan。从句中的attached to serine residues of a single core protein为过去分词短语，修饰polysaccharide chains。全句可译为：这种复合体主要成分是蛋白聚糖，其中包含由150个多聚糖链黏附于唯一核心蛋白质的丝氨酸残基。 Some biopolymers that were thought to be pure polysaccharides are now believed to have protein covalently attached to them. Glycogen is such an example. 一些生物聚合物被认为是纯多糖是目前有共价键连接到他们的蛋白。糖原就是这样的一个例子。 Mucins, proteoglycans and glycogen are biopolymers, that contain carbohydrate as the principal structural component. The term glycoprotein, however, is more often used to describe proteins, such as glycophorin referred to in this section, that are mainly protein but contain between 5 and 10% by weight of carbohydrate. 黏蛋白,蛋白聚糖和糖原是生物聚合物,含碳水化合物的主要结构部件。然而专业术语糖蛋白,往往是用来描述蛋白质,如指在本节中的血型糖蛋白,主要成分是蛋白质，但包含5至10%重量的碳水化合物。 There is a range of structures. The saccharide side-chains vary in number between 1 and about 20 and are linked to the protein at Asn, Ser and Thr residues. The saccharide moiety contains anything up to about 20 sugar residues and may be branched in structure. The range of oligosaccharyl moieties bound to protein can also be found bound to lipid, giving rise to glycolipids. 这里有一个范围的结构。不同的糖侧链之间的数字大约在1和20和伴有蛋白质的天冬酰胺，丝氨酸和苏氨酸残基。糖类的一部分包含任何高达20%糖残留物和可能是支架结构。在低聚糖同时与蛋白质与脂质相连的情况下,发生糖脂化。 A more comprehensive term, describing proteins and lipids that contain covalently bound carbohydrate, is glycoconjugate. 一个更全面的专业术语,描述蛋白质和脂质还有碳水化合物共价结合形成复合糖。 There are over 100 different types of glycolipid structure, reflecting variations in the fatty acyl chains of the hydrophobic ceramide portion and the different combinations and types of sugar residue in the hydrophilic carbohydrate portion. 有超过100种不同的醣脂类结构,反映在脂酰链疏水部分的变化和不同组合类型神经酰胺和糖基在亲水碳水化合物部分的差异。 The latter falls into five groups depending on the structure of