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在Penicillium中调解转化后处理的基本因素的修改,以获得高质量的蛋白质表达

Demin Guo¹, Shengfang Zhao¹, Jie Chen¹

¹State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory for Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha 410081, China.

Engineering microbiology

|June 20, 2025

概括

过度表达蛋白质加工因子 (PTMFs) 增加了Penicillium oxalicum中本地和外来蛋白质的酶活性. 然而,同源蛋白质分泌量下降,这表明真菌蛋白质表达的复杂调节.

科学领域:

分子生物学分子生物学
生物技术是生物技术.
菌类学菌类学是指菌类学.

背景情况:

蛋白质成熟涉及复杂的翻译后修改和加工.
对于高质量的蛋白质表达,高效的翻译后处理机制至关重要.
了解翻译后调解因子 (PTMFs) 是优化蛋白质合成的关键.

研究的目的:

研究特定PTMFs在Penicillium oxalicum*中同类和异质蛋白的表达中的作用.
评估过度表达HacA,BipA和PdiA对蛋白质活性和分泌的影响.

主要方法:

在表达 Amy15A (同源) 和 TaEG (异源) 蛋白质的 * Penicillium oxalicum * 中构建记者菌株.
三种PTMF的个体过度表达:HacA,BipA和PdiA.
使用SDS-PAGE的蛋白质酶活性和分泌水平的分析.

主要成果:

过度表达HacA,BipA和PdiA增强了同源蛋白和异源蛋白的酶活性.
不同类蛋白质分泌保持稳定或增加,而同类蛋白质分泌保持不变或减少.
蛋白质生产和活性的变化并不能通过植物生长速度或记者转录水平的变化来解释.

结论:

在Penicillium oxalicum中,PTMFs积极影响蛋白质表达和酶活性.
纤维状真菌底盘细胞可以通过利用PTMF来优化,以提高蛋白质的生产.
对同源与异源蛋白质分泌的差异性影响突显了真菌中蛋白质加工的复杂性.

关键词:

这就是BipAA.哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈在PdiAA中使用.这种植物是Penicillium oxalicum.后翻译处理后翻译处理蛋白质合成蛋白质合成

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