Effect of 4% glycerol and low aeration on result of expression in <i>Escherichia coli</i>of Cin3 and three <i>Venturia inaequalis</i>EST’s recombinant proteins

作     者：Taha H. Al-Samarrai William T. Jones Dawn Harvey Christopher A. Kirk M. Templtone 

作者机构：The Plant and Food Research Institute of New Zealand Ltd. CRI Auckland New Zealand The Plant and Food Research Institute of New Zealand Ltd. CRI Palmerston North New Zealand The University of Samarrai College of Medical Technology Samarra Iraq 

出 版 物：《American Journal of Molecular Biology》 (美国分子生物学期刊（英文）)

年 卷 期：2013年第3卷第1期

页      面：1-9页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Venturia inaequalis Expressed Sequence Tag (ESTs) Phytopathogenic Fungus Appressorium A Stroma 

摘      要：The phytopathogenic fungus Venturia inaequalis causes scab of apple. Once this fungus penetrates the plant surface, it forms a specialized body called a stroma between the inner cuticle surface and the epidermal cell wall. A novel Venturia inaequalis 5704 (Cin3) and three expressed sequence tags (ESTs);38, 6987, and 4010 are strongly up-regulated in the early stages of infection. The CIN3 and three ESTs using two vectors pMAL-c2 and pET 21 were expressed in Escherichia coli. Recombinant proteins expression, solubility and yields were analyzed. 38, 5704 (Cin3) and 6987 re- combinant proteins were expressed in soluble form and while 4010 was expressed in inclusion bodies. Re- solution on native-PAGE, the recombinant proteins;38, 5704 (Cin3), 6987 were shown to be present in dimmer, tetramer and polymer. A method was de- veloped, consisting of induction of expression at va- rious temperatures, and using enriched broth with 4% glycerol together with slow shaking, led to a decrease in concentration of nascent polypeptide and production of soluble recombinant proteins of;38, 5704 (Cin3), 6987 and 4010. Resolution on native- PAGE, the recombinant proteins were shown to be present as monomer.