配糖体

In the second part of this dissertation, the theory of multivalent carbohydrate ligands binding to the lectins located on cell surface was used in the experimental design.

论文的第二部分主要是运用多价糖配体与细胞表面凝集素专一识别、结合的原理，设计和合成了与星状细胞表面M6P/IGF-Ⅱ受体具有特异性识别的六磷酸甘露糖修饰的人血清白蛋白（M6P-HSA），作为导向药物的载体。

Protease treatment of the plasma membranes could abolish the binding but NaIO_4 and glycosidase could not, indicating that nsLTP144 bound to plasma membranes protein without carbohydrate moiety. Using the homobifunctional cross-linking regent bissuberate (BS~3) and rice plasma membranes incubated with ~(125)I-Trx-nsLTP144, we identified, after SDS-polyacrylamide gel electrophoresis and autoradiography, a putative protein receptor on the rice plasma membranes with the molecular mass around 60 kDa. NsLTP144 can not trigger extracelluar alkalization in arabidopsis, but can abolish the extracellular alkalization effect of phytopathogen elicitor cryptogein, suggesting that cryptogein and nsLTP144 may bind to the same membrane protein. In vitro pull-down assay showed that nsLTP144 interacted with OsCaM1, a possible extracellular calmodulin, implying that nsLTP144 and OsCaM1 could function in the same signal transduction pathway. These results shed light on revealing the roles of nsLTP in vivo and make it promising to finally characterize the plasma membranes receptor of nsLTP.

发现~(125)I-Trx-nsLTP144、~(125)I-Trx-nsLTP110与水稻细胞质膜均具有特异性结合，而且结合是饱和性的、可被竞争的，符合配体-受体结合的典型特征，同时用于对照实验的蛋白质~(125)I-Thioredoxin没有此特性，表明水稻细胞质膜上存在nsLTP的受体；利用可氧化糖基的NaIO_4和水解糖基的N\'-糖苷酶F处理水稻细胞质膜，再进行结合实验，结合活性几乎不受影响；而利用胰蛋白酶处理细胞膜则使得结合能力几乎完全丧失，表明其受体为没有经过糖基化修饰的蛋白质；利用交联剂BS~3交联配体一受体后，再进行SDS-PAGE分离和放射自显影，结果显示水稻细胞质膜上的nsLTP受体中有一个60kDa的蛋白质可以与nsLTP144发生特异性的结合，可能是其受体；细胞外碱化实验表明，nsLTP144不能促使拟南芥原生质体细胞培养液的细胞外碱化反应，却能猝灭来自植物病原菌的激发子Cryptogein刺激拟南芥原生质体产生的细胞外碱化反应，表明nsLTP和Cryptogein结合细胞膜上相同的位点，保护了植物细胞免受Cryptogein导致的细胞程序性死亡，并诱导系统获得性抗性的产生；体外Pull-down实验表明，nsLTP144和水稻的OsCaM1具有相互作用，暗示了nsLTP144和OsCaM1可能同在一个信号通路上起作用。

The recent progress in the studies of saccharide -metal complex is reviewed. Especially their synthesis based on saccharide ligand and application is described.

综述了近年来糖－金属配合物的最新研究进展，重点从糖基配体的角度介绍了各类糖－金属配合物的合成与应用研究。

When normal platelets are stimulated by thrombogen, ADP or collagen, the GPⅡb/Ⅲa receptor on the surface of platelet combine with fibrinogen that induces platelet aggregation.

正常血小板在各种刺激下，如凝血酶原，ADP，胶原诱导下被激活，其表面糖蛋白Ⅱb/Ⅲa受体由配体-非结合状态变为配体-结合状态，导致血小板聚集，形成血小板血栓。

The crystal structures of two complexes have been determined by X-ray diffraction as: complex (11) is distorted octahedron configuration,α=15. 9002 (6), b=16. 2413 (5), c=23. 4401 (8)〓,β=90°, V=6053. 2 (4)〓, Z=8 and R=0.0531; complex (8) is trigonal bipyramidal configuration,α=9. 3476 (8), b=17. 4236 (13), c=9. 7836 (8)〓,β=91. 197 (3)°, V=1593. 1 (2)〓, Z=2 and R=0.0325, which shows that three secondary amine groups (N-1, N-2, N-3) of the glycosylamine ligand forms the equatorial plane, and the tertiary amine (N-4) and one Cl〓 are pointed on the apical positions.

分别对其进行X-ray衍射分析可以得出：配合物(11)的晶体数据为α=15.9002(6)，b=16.2413(5)，c=23.4401(8)〓，β=90°，V=6053.2(4)〓，Z=8 and R=0.0531，为畸变的八面体构型，而配合物(8)中，α=9.3476(8)，b=17.4236(13)，c=9.7836(8)〓，β=91.197(3)°，V=1593.1(2)〓，Z=2 andR=0.0325，为三角双锥构型，糖胺配体的三个氮原子（N-1，N-2，N-3）位于赤道平面上，而另外一个氮原子（N-4）和一个Cl〓位于轴向上。

Four new salicylaldehyde derivatives with a glucose or mannose moiety were synthesized with 2-tert-butylphenol or 4-tert-butylphenol as the starting material, followed by the formylation, chloromethylation, nucleophilic substitution reaction with the desired carbohydrate. The salicylaldehyde derivatives condensed with ethylenediamine to give the Schiff bases, which coordinated with Mn to afford four novel sugar-based Salen Mn complexes.

首先，分别以2-叔丁基苯酚和4-叔丁基苯酚为起始原料，经过甲酰化反应、氯甲基化反应、和糖类衍生物的亲核取代反应制得了四种新型并入葡萄糖基或甘露糖基的水杨醛衍生物，将它们与乙二胺缩合生成希夫碱配体，得到的配体与过渡金属Mn~(3+)配位制备出四种新型含糖基的Salen Mn配合物。

A result of pear contains more glycosides and tannic acid composition and a variety of vitamins, so high blood pressure, heart lung disease, hepatitis, liver cirrhosis patient developed lightheadedness, heart palpitations when ringing in the ears, eat pears lot of good.

因梨中含有较多的配糖体和鞣酸成分以及多种维生素，故高血压、心肺病，肝炎、肝硬化病人出现头昏目眩、心悸耳鸣时，常吃梨大有好处。

Usage: useful for pharmaceutical intermediate,especially useful for intermediate of synthesis aids inhibitor and high temperature resistant resins and metallocen catalyst for olefine polymerization.

用途：用作各种医药合成中间体，特别是抗艾兹病药物，治疗糖脲病药物以及治疗心律不齐病药物的中间体以及烯烃聚合用金属茂络合物催化剂配位体和透明的耐热性树脂原料。

The family of glycophosphoproteins comprising osteopontin, bone sialoprotein, dentin matrix protein 1, dentin sialophosphoprotein and matrix extracellular phosphoglycoprotein — small integrin-binding ligand N-linked glycoproteins — are emerging as important players in many stages of cancer progression.

糖磷酸化蛋白包含骨桥蛋白，骨唾液蛋白，牙质基质蛋白及细胞外基质糖蛋白――小的整联蛋白结合配体 N 联结糖蛋白――作为癌症演进早期的一个重要物质。

The comprehensive utilization of pectins, volatile materials and various glucosides of citrus peels were recommended emphatically.

着重介绍了柑桔果皮中果胶、发性物质及各种配糖体的综合开发利用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。