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Position: Home > Articles > Expression and bioinformatics analysis of MIC5 protein of Eimeria stiedai Animal Husbandry & Veterinary Medicine 2017,49 (5) 98-102

斯氏艾美耳球虫MIC5蛋白表达及生物信息学分析

作  者:
赵爱云;齐萌;江春雨;井波
单  位:
塔里木大学动物科学学院
关键词:
斯氏艾美耳球虫;微线蛋白5;表达;生物信息学
摘  要:
为研究斯氏艾美耳球虫(Eimeria stiedai)的入侵及免疫机制,从基于Gateway技术构建的孢子化卵囊c DNA原核表达文库中扩增出了微线蛋白5(MIC5)部分基因序列,融合表达、纯化了相应的GST-MIC5蛋白多肽,并对该融合蛋白进行了生物信息学分析。结果显示,获得的MIC5基因部分序列长552 bp,与参考序列的同源性高达99%;经原核表达、纯化,获得大小约46 ku的融合蛋白,与预测相符;生物信息学分析发现,目的蛋白含3个由半胱氨酸序列构成的Apple结构域,揭示其与虫体黏附和入侵宿主细胞相关;诱导表达并纯化了与虫体黏附和入侵宿主细胞相关的MIC5部分蛋白。本研究为深入探讨斯氏艾美耳球虫MIC5蛋白的功能奠定了理论基础。
译  名:
Expression and bioinformatics analysis of MIC5 protein of Eimeria stiedai
作  者:
ZHAO Aiyun;QI Meng;JIANG Chunyu;JING Bo;College of Animal Science,Tarim University;Key Laboratory of Tarim Animal Husbandry Science and Technology,Xinjiang Production & Construction Group;
关键词:
Eimeria stiedai;;microneme 5;;expression;;bioinformatics
摘  要:
To investigate the invasion and immune mechanism of Eimeria Stiedai,an E. stiedai microneme 5( MIC5) sequence of 552 bp,which has 99% sequence homology with that of E. tanella,was amplified from the prokaryotic c DNA expression library of the sporulated oocytes constructed using Gatewaytechnology. Then the corresponding polypeptide was expressed and purified. The result showed that a fusion protein with an anticipated molecular weight of approximately 46 ku was obtained. Bioinformatics analysis revealed that the target protein contain Apple domains,including three cysteine residues that may be relevant with parasite adhesion and host cell invasion. Then the target fragment of E. stiedai MIC5 was induced to express and further purified. This study provides a basis for investigation of MIC5 function of E. stiedai.

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