Cloning and expression in Escherichia coli of an insecticidal crystal protein gene from Bacillus thuringiensis var. aizawai HD-133.

Cloning and expression in Escherichia coli of an insecticidal crystal protein gene from Bacillus thuringiensis var. aizawai HD-133.
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苏云金芽孢杆菌杀虫晶体蛋白基因在大肠杆菌中的克隆和表达

DOI:
10.1099/00221287-133-10-2921
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发表时间:
1987
期刊:
Journal of general microbiology
影响因子:
--
通讯作者:
D. Ellar
D. Ellar
中科院分区:
--
文献类型:
--
作者:
K. Chak;D. Ellar

文献摘要

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使用从克隆的var衍生的基因探针。针对杀虫晶体蛋白基因,我们克隆了一个苏云金芽孢杆菌变种。Aizawi HD-133CP基因在大肠杆菌中的表达该基因编码一种多肽,在体内和体外对鳞翅目昆虫都是有毒的。该蛋白的表达水平足以在重组大肠杆菌菌株中产生相亮的包涵体,这些包涵体可以使用不连续的蔗糖密度梯度进行部分纯化。免疫印迹分析表明,包涵体含有一个135 kDa的多肽,能与苏云金芽胞杆菌变种抗血清发生强烈反应。Kurstaki HD-1 P1多肽。
Using a gene probe derived from the cloned var. sotto insecticidal crystal protein (ICP) gene, we have cloned a Bacillus thuringiensis var. aizawai HD-133 ICP gene in Escherichia coli. The gene encodes a polypeptide that is toxic to Lepidoptera in vivo and in vitro. The protein is expressed at a level sufficient to produce phase-bright inclusions in recombinant E. coli strains, and these inclusions can be partially purified using discontinuous sucrose density gradients. Immunoblotting shows that the inclusions contain a 135 kDa polypeptide which reacts strongly with antiserum raised against the B. thuringiensis var. kurstaki HD-1 P1 polypeptide.