| 1. | Cytidine ( cytosine nucleoside ) a nucleoside formed when cytosine is linked to dribose via a - glycosidic bond
胞嘧啶核苷：当胞嘧啶通过糖苷键与d核糖接合形成的核苷。 |
| 2. | Cellulase an enzyme that hydrolyzes 1 , 4 - glycosidic linkages in cellulose , yielding cellobiose ( a disaccharide ) and glucose
纤维素酶：一种能够水解纤维素中1 ， 4糖苷键，生成纤维二糖（一种二糖）和葡萄糖的酶。 |
| 3. | Adenosine ( adenine nucleoside ) a nucleoside formed from adenine linked to dribose with a glycosidic bond . adenosine triphosphate ( atp ) is a nucleotide derived from adenosine
腺苷：腺嘌呤与d -核糖以糖苷键结合形成的核苷。 atp就是由腺苷中获得的核苷酸。 |
| 4. | Trehalose , a non - deoxidize disaccharide , serves as a protectant of enzymes and membranes in many microorganism , algae and lower invertebrate animals against various stress
海藻糖是由两个葡萄糖分子以、 1 1糖苷键结合的非还原性双糖，对许多生物的抗逆耐受性起着重要作用。 |
| 5. | Hyaluronic acid ( ha ) is a high molecular weight linear polysaccharide composed of repeating disaccharide units of d - glucuronic acid ( glclia ) and n - acetyl - d - glucosamine ( glcnac ) linked by 3 - 1 - 3 and p - 1 - 4 glycoside bonds
透明质酸( hyaluronicacid )是一种由葡萄糖醛酸( glcua )和n -乙酰氨基葡萄糖( clcnac )以- 1 - 3和- 1 - 4糖苷键相连的二糖单位重复构建而成的，具有生物相容性的高分子聚合物。 |
| 6. | The recent synthesis progress of glycoconjugate is reviewed , including the various methods of the glycosidic bond formation by chemical synthesis and the synthesis strategies of novel complex glycoconjugates , such as glycopeptides , glycoproteins and glycolipids
摘要文介绍近年来各种糖缀合物化学合成的研究进展，包括各种糖苷键的化学合成方法以及各种特殊复杂糖缀合物，如糖肤、糖蛋白、糖脂的化学合成策略。 |
| 7. | As a result , 1 ipophilic products have the highest yield when the reaction time was 70min . the identification of ir spectrometry showed that there are more dissociated hydroxy ( ho - ) and end - groups in the liquefaction products than in the plant cellulose
经红外光谱( ir )检测结果表明，液化产物的游离羟基明显增多，其它的游离端基也是明显增加，这说明液化反应破坏了纤维素的晶格结构，而且部分水解了糖苷键。 |
| 8. | Oligochitosan is not only water - soluble , non - toxic , biocompatible but also possesses versatile functional properties of chitin and its derivatives , such as polyelectrolite properties , the presence of reactive functional groups , gel - forming ability , high adsorption capacity , bacteriostatic , fungistatic and antitumour influence , and thus it has attracted more and more attention in the field of biology . previous investigations have shown that chitin and its derivatives have immunoenhancement activities
壳寡糖是由3 10个n -乙酰氨基葡萄糖残基或氨基葡萄糖残基通过- 1 ， 4 -糖苷键连接而成的寡糖，它具有良好的水溶性、组织兼容性，在生物体内易降解，同时也具有抑菌、抗肿瘤、调血脂、调节免疫及活化肠道双歧杆菌等多种生理功能，因此已成为众多领域的研究热点。 |
| 9. | Fos contain mixture of gf2 , gf3 and gf4 sugars ( where g = glucose molecule and f = fructose molecule ) and a dp ( “ degree of polymerization ” ) of 3 - 5 ( “ neosugar ” ) , are not naturally - occurring but are enzymatically synthetized from sucrose by action of an enzyme from the fungus aspergillus niger
详细说明：是以蔗糖做底物，采用呋喃果糖苷酶转果糖基作用，在蔗糖分子上以（ 1 2 ）糖苷键上与1 - 3个果糖分子结合，形成的蔗果三糖（ gf2 ） 、蔗果四糖（ gf3 ） 、蔗果五糖（ gf4 ）属于果糖和蔗糖构成的直链杂低聚糖，在形成的产物中还有果糖、葡萄糖和未反应完全的底物蔗糖，采用色谱法除去单糖和双糖制得高纯度的低聚果糖。 |
| 10. | Ricin a chain ( rta ) is an active chain and has specific n - glycosidase activity , which excises a specific adenine residue ( a4324 in rat ) from a highly conserved loop of 26 or 28s rrna in 60s ribosomal subunits . this cleavage of adenine can lead to the disruption of ribosomal function , thereby , inhibits the protein synthesis and then cause the death of cells
A链是活性链，具有n -糖苷酶活性，可催化切断真核生物60s亚基28srrna中第4324位腺嘌呤与核糖分子之间的糖苷键，使其脱去一个腺嘌呤，使核糖体60s亚基失活，从而抑制蛋白质的合成。 |
