The denaturation was a two - steps " process . first , cml did n ' t lose activity despite of its structure changes because the changes were out of the active center 在cml的变性过程中，结构的变化先于活性的变化，先是结构开始变化，但活性中心结构并未破坏，凝血活性的变化有限。
The metal ions and its coordination environment are generally the active center of the biological molecules , so the study on the metal ions and their micro - environment is of great significance 金属离子及其配位环境往往就是生物分子的活性中心，因而对金属离子及其微环境的研究具有重要意义。
Recent studies indicated that tcs has curative effect for the treatment of cancer , aids etc . therefore , studies on tcs are of important values in both academic research and practical application 近几年的研究表明，天花粉蛋白对癌症、 aids等疾病有一定疗效。天花粉蛋白也是一种金属蛋白。 ca ~ ( 2 + )处于其活性中心部位。
Allosteric enzyme an enzyme whose catalytic activity can be modified by the noncovalent binding of a particular metabolite ( a modulator ) at a site ( the allosteric site ) other than the active site 别（变）构酶：这种酶除了有活性中心外，还有一个别构中心，当专一性的代谢物非共价的结合到别构中心上时，它的催化活性即发生改变。
The catalytic applications of the mesoporous materials in epoxidation of olefins are summarized , including the preparation methods and modification of the materials , catalytic performance and characterization of active sites 本文综述了介孔材料在烯烃环氧化反应中的应用，包括材料的制备方法、催化性能以及活性中心的表征。
The catalytic applications of the mesoporous materials in epoxidation of olefins are summarized , including the preparation methods and modification of the materials , catalytic performance and characterization of active sites 摘要本文综述了介孔材料在烯烃环氧化反应中的应用，包括材料的制备方法、催化性能以及活性中心的表征。
Big basic nitrogen compounds ( bnc ) molecules poisoned the active sites on external surface of the catalyst , while small bnc molecules entered pore channels of the catalyst , both caused deactivation of the active sites 大分子碱性氮化物可以毒化催化剂外表面活性中心，小分子碱性氮化物可以进入催化剂孔道，造成催化剂活性中心全部失活。
The interlayer distance of heptylamine intercalation complex is smaller than butylamine intercalation complex . polyamine molecules formed a bent conformation in the interlayer space of a - zpmpp and formed several intercalation phases for its muti - active center 多胺分子在（脯氨酸一n一甲基磷酸一磷酸氢）结的层板间呈弯曲排列，多胺分子由于有多个活性中心可以形成多个插层相。
Second , the active center was destroyed and lra began to lose its agglutinate activity . so lra has a comparatively stable structure . the fls of lra with different temperature and ph also showed there was little change 而圆二色谱的研究表明结构的变化先于活性的变化，先是结构开始变化，但活性中心结构并未破坏，接着结构的进一步变化使活性逐步丧失，表明lra具有较强的抗变性能力。
It is a very basic , single - chain protein with molecular weight about 14 kd . it shares 33 % sequence identity with bovine pancreatic rnasea and has structurally equivalent counterparts for the two histidines and one lysine that comprise the catalytic residues for ribonucleolytic activity 它是由123个氨基酸组成的分子量约为14kd的单链碱性蛋白质，与牛胰核糖核酸酶有33的同源性，两个组氨酸和一个赖氨酸残基组成了血管生成素核糖核酸酶活性中心。
