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碳水化合物结合模块的工程和表征,用于成像植物原生质中纤维素纤维的生物合成

Dharanidaran Jayachandran¹, Peter Smith², Mohammad Irfan¹

¹Department of Chemical and Biochemical Engineering, Rutgers-The State University of New Jersey, Piscataway, New Jersey, USA.

Biotechnology and bioengineering

|June 30, 2023

概括

工程双碳水化合物结合模块 (CBM) 显示了增强的纤维素结合. 协同CBM3a非常适合可视化植物细胞壁中的纤维素合成.

科学领域:

植物生物学植物生物学
生物化学生化学
生物物理学的生物物理.

背景情况:

碳水化合物结合模块 (CBM) 对于将催化域向特定的多糖化物至关重要.
关于CBM-多糖体相互作用的先前研究往往缺乏对工程双重设计的定量分析和表征.
在植物细胞壁中可视化纤维素纤维素合成需要基于CBM的先进探针.

研究的目的:

为了改进纤维素识别,设计和表征协同CBM设计.
研究CBM具有不同纤维素形式的动态结合特性.
应用基于CBM的探针来可视化再生植物细胞壁中的纤维素合成.

主要方法:

使用平衡和动态动力学结合测试使用石晶体微平衡与散射 (QCM-D) 被采用.
来自3a和64家族的A型工程CBM被设计和测试以对抗晶体纤维素I和酸膨胀纤维素.
使用共聚焦激光扫描显微镜和广场光显微镜可视化Arabidopsis thaliana的原质体.

主要成果:

协同CBM3a证明了对纤维素的最高吸附率和对晶体纤维素和无形纤维素的可逆结合.
工程双重CBM已成功应用到可视化纤维素纤维素合成在再生细胞壁的阿拉比多普西斯原生质.
这项研究提供了对CBM-纤维素相互作用的定量见解,与之前的定性分析不同.

结论:

双联CBM3a表现出优越的结合特性,使其适用于活植物细胞壁生物合成成像.
工程化CBM作为有效的探针试剂,用于在细胞壁再生期间在现场可视化纤维素纤维.
这项研究促进了CBM的应用,用于详细研究植物细胞壁动态.

关键词:

阿拉比多普西斯植物的原生质.的碳水化合物结合模块.细胞壁生物合成细胞壁生物合成纤维素微纤维素的微纤维素.活细胞成像技术使用.石英晶体微平衡具有散射的微平衡.

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