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一种来源于单环刺螠的胰凝乳蛋白酶抑制剂及其基因和其重组蛋白的应用
Authors
杨少丽
焦绪栋
Publication date
16 October 2014
Publisher
Abstract
本发明涉及一种来源于单环刺螠的胰凝乳蛋白酶抑制剂及其基因和其重组蛋白的应用,属于生物医学领域。该胰凝乳蛋白酶抑制剂的蛋白质具有氨基酸序列SEQ?ID?No.1,编码的单环刺螠胰凝乳蛋白酶抑制剂UCI01是单链多肽,含67个氨基酸残基,分子量约为7516Da,等电点为4.38,不含二硫键,没有明显的信号肽区域。该基因具有序列表SEQ?ID?No.2中的碱基序列,cDNA序列全长度为697bp,其中含有80bp的5`非翻译区,413bp的3`非翻译区和polyA尾巴,开放编码框为201bp。利用原核表达技术对该基因进行重组表达,获得的重组蛋白具有胰凝乳蛋白酶抑制剂的活性,其IC50为53nM。该重组蛋白具有较好的pH稳定性和一定的温度稳定性,对金黄色葡萄球菌具有抑菌效果
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Last time updated on 04/07/2017