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在大肠杆菌中优化prolyl氧化对功能性复合原的优化

Pei Zhu¹, Mingxue Ma¹, Tianjie You¹

¹Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, School of Life Sciences, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China.

International journal of biological macromolecules

|November 9, 2024

概括

通过L593进行重组原氧化,增强了原蛋白的修饰,增强了细胞粘附. 这项研究提供了对可扩展的原蛋白生产和功能应用的见解.

科学领域:

生物化学生物化学
生物材料科学生物材料科学

背景情况:

原蛋白是一种重要的细胞外基质蛋白,具有广泛的应用.
在大肠杆菌中,重组原蛋白的产生是具有成本效益的,但缺乏关键的翻译后修改,如烯氧化.
基基酶 (例如BaP4H,DSP4H,L593) 显示出在大肠杆菌中修改复合原的潜力.

研究的目的:

为了研究由不同的prolyl基酶修饰的复合人体III型原的结构和功能影响.
确定氨酸氧化水平,氨酸氧化位点及其与原三环稳定性和生物功能的相关性.

主要方法:

在大肠杆菌中重新组合的人类III型原体的表达.
使用prolyl氧化酶 (BaP4H,DsP4H,L593) 的修饰.
分析了氧化百分比和氧化位点,循环二极化谱和细胞粘附试验.

主要成果:

L593酶导致了最高的普林氧化百分比.
烯氧化与三环螺旋形成有关,但不一定与稳定性有关.
由BaP4H和L593修改的重组原体显示显著增强细胞粘附,与三重螺旋结构相关.

结论:

酸基酶修饰,特别是L593,改善了重组原的特性.
增强的プロ林氧化对通过三重螺旋结构的细胞粘附有积极的影响.
这些发现支持改进复合原蛋白的工业生产和功能应用.

关键词:

原蛋白是一种原蛋白.普罗利尔氧化酶是什么?三重螺旋结构的结构.

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