Optimization of Membrane Protein Production Using Titratable Strains of E. coli.

Optimization of Membrane Protein Production Using Titratable Strains of E. coli.
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使用大肠杆菌可滴定菌株优化膜蛋白生产。

DOI:
10.1007/978-1-4939-6887-9_6
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发表时间:
2017
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
通讯作者:
Morra R
Morra R
中科院分区:
--
文献类型:
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作者:
Morra R

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大肠杆菌中 T7 RNA 聚合酶驱动的膜蛋白异源表达。大肠杆菌常常受到转录和翻译速率不匹配的限制,导致Sectranslocon饱和和膜蛋白不插入。为了优化折叠的功能性插入蛋白质的水平,纠正这种不匹配非常重要。在本协议中,我们描述了大肠杆菌可滴定菌株的使用。在大肠杆菌中,两个小分子诱导剂用于双变量分析,通过微调 eGFP 标记膜蛋白的转录和翻译速率来优化表达水平。
The heterologous expression of membrane proteins driven by T7 RNA polymerase inE. coliis often limited by a mismatch between the transcriptional and translational rates resulting in saturation of theSectranslocon and non-insertion of the membrane protein. In order to optimize the levels of folded, functional inserted protein, it is important to correct this mismatch. In this protocol, we describe the use of titratable strains ofE. coliwhere two small-molecule inducers are used in a bi-variate analysis to optimize the expression levels by fine tuning the transcriptional and translational rates of an eGFP-tagged membrane protein.
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