甲状旁腺素能增加人体骨密度和骨强度,是治疗骨质疏松症最有效的多肽类药物之一,但至今缺乏具有相应功能的小分子药物。根据计算机辅助药物设计原理,采用Discovery Studio 2.5软件包,以14个甲状旁腺素(PTH)受体激动剂及其突变类似物为...甲状旁腺素能增加人体骨密度和骨强度,是治疗骨质疏松症最有效的多肽类药物之一,但至今缺乏具有相应功能的小分子药物。根据计算机辅助药物设计原理,采用Discovery Studio 2.5软件包,以14个甲状旁腺素(PTH)受体激动剂及其突变类似物为训练集,利用活性构象限制的方法,采用HypoGen算法构建出具有活性预测功能的3D药效团模型。其中最好的药效团模型含有1个阳离子基团(PI),3个疏水中心(H)和1个氢键供体(HBD)。同时应用该模型成功预测出16个测试集分子的活性,经交叉验证表明该模型达到95%的置信水平,具有良好的活性预测能力。该药效团可以用于后续抗骨质疏松症小分子药物的筛选,指导相应的药物优化,同时所采用的限制构象的药效团生产方法为基于多肽的药物设计提供了一个新的思路。展开更多
Dear Editor, Enteropeptidase (enterokinase, EC 3.4.21.9) is a serine protease, which shows a specific cleavage of its substrates at the C-terminal of the recognition site (Asp)4Lys (Zheng et al., 2009). Because ...Dear Editor, Enteropeptidase (enterokinase, EC 3.4.21.9) is a serine protease, which shows a specific cleavage of its substrates at the C-terminal of the recognition site (Asp)4Lys (Zheng et al., 2009). Because of the unique specificity, enteropep- tidase could be used as a tool for the production of recom- binant fusion proteins. Especially the recombinant enteropeptidase light chain (EPL), which contains a catalytic domain, is of large interest to be applied in biopharmaceu- tical industry (Lu et al., 1997).展开更多
文摘甲状旁腺素能增加人体骨密度和骨强度,是治疗骨质疏松症最有效的多肽类药物之一,但至今缺乏具有相应功能的小分子药物。根据计算机辅助药物设计原理,采用Discovery Studio 2.5软件包,以14个甲状旁腺素(PTH)受体激动剂及其突变类似物为训练集,利用活性构象限制的方法,采用HypoGen算法构建出具有活性预测功能的3D药效团模型。其中最好的药效团模型含有1个阳离子基团(PI),3个疏水中心(H)和1个氢键供体(HBD)。同时应用该模型成功预测出16个测试集分子的活性,经交叉验证表明该模型达到95%的置信水平,具有良好的活性预测能力。该药效团可以用于后续抗骨质疏松症小分子药物的筛选,指导相应的药物优化,同时所采用的限制构象的药效团生产方法为基于多肽的药物设计提供了一个新的思路。
文摘Dear Editor, Enteropeptidase (enterokinase, EC 3.4.21.9) is a serine protease, which shows a specific cleavage of its substrates at the C-terminal of the recognition site (Asp)4Lys (Zheng et al., 2009). Because of the unique specificity, enteropep- tidase could be used as a tool for the production of recom- binant fusion proteins. Especially the recombinant enteropeptidase light chain (EPL), which contains a catalytic domain, is of large interest to be applied in biopharmaceu- tical industry (Lu et al., 1997).