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阿维链霉菌来源的磷脂酰丝氨酸合成酶基因的克隆及其在毕氏酵母中的异源表达
引用本文:欧广云,熊智强,周圣靓,王勇,李平.阿维链霉菌来源的磷脂酰丝氨酸合成酶基因的克隆及其在毕氏酵母中的异源表达[J].工业微生物,2014,44(1):28-33.
作者姓名:欧广云  熊智强  周圣靓  王勇  李平
作者单位:欧广云(同济大学,生命科学与技术学院,上海,200092中国科学院生命科学研究院植物生理生态研究所,上海,200032艾拓思实验设备,上海,有限公司,上海,200235); 熊智强 (中国科学院生命科学研究院植物生理生态研究所,上海,200032); 周圣靓 (中国科学院生命科学研究院植物生理生态研究所,上海,200032); 王勇 (中国科学院生命科学研究院植物生理生态研究所,上海,200032); 李平 (同济大学,生命科学与技术学院,上海,200092);
基金项目:中科院知识创新项目(项目编号:KSCX2-EW-J-12)上海市科学技术委员会项目(项目编号:12dz1909403)
摘    要:本文旨在构建阿维链霉菌(Streptomyces avermitilis)来源的磷脂酰丝氨酸合成酶基因(pss)的重组质粒,研究其在毕氏酵母中的异源分泌型表达。利用PCR技术克隆阿维链霉菌来源的pss基因,再通过电转化方法将重组质粒pOG-01转入毕氏酵母KM71中,构建重组工程菌KP1。实验结果表明,阿维链霉菌来源的磷酯酰丝氨酸合成酶基因在毕氏酵母KM71中成功表达,2 mL菌体上清催化50 mmol/L卵磷脂,转酯反应的转化率为58%,酶活为4.83 U/mL。

关 键 词:毕氏酵母KM  磷脂酰丝氨酸合成酶  克隆与表达  转酯活性

Cloning and heterologous expression of PSS gene from Streptomyces avermitilis into Pichia pastoris strain
OU Guang-yun,XIONG Zhi-qiang,WANG Yong,LI Ping.Cloning and heterologous expression of PSS gene from Streptomyces avermitilis into Pichia pastoris strain[J].Industrial Microbiology,2014,44(1):28-33.
Authors:OU Guang-yun  XIONG Zhi-qiang  WANG Yong  LI Ping
Institution:1. Tongji University, School of Life Science and Technology, Shanghai 200092, China; 2. Institute of Plant Physiology & Ecology, Shanghai Institutes for Biological Sciences, CAS Shanghai 200032, China; 3. ITS Science(China) Co. Ltd, Shanghai 200235, China
Abstract:A plasmid with phosphatidylserine synthase gene (pss) originated from Streptomyces avermitilis was constructed and heterologous expressed in Pichia pastoris. The recombinant strain KP1 was successfully constructed by PCR method to clone pss gene from Streptomyces avermitilis, and electrotransformation method to introduce the plasmid pOG-01 into Pichia pastoris KMT1. The result showed that the pss gene was well expressed in the engineering strain KP 1.50 mmol/L PC (phosphatidylcholine) was catalyzed with 2 mL cell supernatant and the conversion of PC was 58%. The enzyme activity was determined as 4.83 U/mL.
Keywords:Pichia pastoris KM71  phosphofidylserine synthase  clone and expression  transphosphatidylation activity
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