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Research on the classification of Streptomyces strain ZG0429 and purification of streptavidin
Author(s): 
Pages: 7-10
Year: Issue:  1
Journal: ACTA MICROBIOLOGICA SINICA

Keyword:  链霉亲和素淡紫灰链霉菌分类鉴定分离纯化;
Abstract: 从土壤中筛选得到1株高产链霉亲和素的放线菌ZG0429,根据形态观察、培养特征、生理生化鉴定以及16S rRNA序列分析,初步判定该菌株为链霉菌属中的淡紫灰链霉菌(Streptomyces lavendulae).经发酵,ZG0429的链霉亲和素产量可达201.0mg/L.进一步采用硫铵沉淀和凝胶过滤层析纯化,链霉亲和素的回收率为76.87%,纯度可以达到97.03%.该方法简单易行,成本低廉,可得到高产量、高纯度、高活性的目的蛋白,为链霉亲和素发酵产品的大规模纯化提供了依据.
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