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| 改性β-環(huán)糊精(β-CD)與模型底物分子的配位作用一般相對較弱,即使在其邊臂上引入某種功能基的簡單修飾也很難顯著提高其分子鍵合能力,這在很大程度上限制了環(huán)糊精在模擬酶和識別底物等方面的應(yīng)用。但如果將兩個環(huán)糊精單元通過適當(dāng)?shù)幕鶊F(tuán)連接起來,可以得到具有雙重疏水結(jié)合作用和多重識別功能的橋連雙環(huán)糊精,由于結(jié)合位點的增加,以及可以通過調(diào)節(jié)連接基團(tuán)以達(dá)到適宜的幾何匹配,兩個相鄰的環(huán)糊精空腔可協(xié)同參與對形狀和尺寸適合的客體分子進(jìn)行包結(jié),擴展分子鍵合能力,給出更高的配位穩(wěn)定常數(shù),這種特性使其有可能在酶.底物和抗原.抗體強鍵合相互作用模擬研究中得到重要應(yīng)用。 |
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| Modified beta cyclodextrins (beta CD) substrate molecule with model the coordination effect of general relatively weak, even in its edge arm, introducing some function is difficult to significantly improve the simple modified its molecular bonding ability, this is largely limiting cyclodextrins in simulation of enzyme and identify the application of substrate, etc. But if the two cyclodextrins unit through proper groups.important up, can get with dual scanty water binding and multiple identification function of the bridge, because even 2-ring dextrin binding sites, and can increase by adjusting the connection to achieve appropriate geometry groups in the match, the two adjacent cyclodextrins cavity can collaborative participation on the shape and size of the object for molecule bag knot, expand molecular bonding ability, give higher the coordination stable constants, this characteristic that might in the substrates and antigen enzyme. Strong bonding. Antibodies interaction get important application simulation study. |
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