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乙化模式定义了基托四分体的原始化活性
Sven Basa1, Malathi Nampally1, Talita Honorato1
1University of Münster , Institute for Biology and Biotechnology of Plants , Schlossplatz 8 , 48143 Münster , Germany.
Journal of the American Chemical Society
|January 3, 2020
概括
基托桑的使用
科学领域:
- 生物化学
- 分子生物学
- 葡萄糖生物学
背景情况:
- 基托桑的生物活性与其聚合 (DP) 和乙化 (DA) 的程度有关.
- 乙化和脱乙化单元的特定序列,称为乙化模式 (PA),也可能影响素的功能.
- 了解PA对于阐明素作为信息载体分子的作用至关重要.
研究的目的:
- 研究乙化 (PA) 模式对奇托寡糖的生物活性的影响.
- 确定除DP和DA外,PA是否有助于基托桑的诱导和原始化活动.
- 建立基托桑作为真实的信息传递分子.
主要方法:
- 从基因基托聚合物中制备部分乙化基托寡糖,使用重组基托水解酶.
- 基托桑混合物根据聚合度 (DP) 分成DP4-DP12分量.
- 在米细胞中评估了微分的催化剂和原始活性,包括对单乙四聚合物的比较.
主要成果:
- 基多寡糖的诱导和原始化活动都受其聚合度 (DP) 的影响.
- 化活性也取决于乙化 (PA) 模式,例如ADDD+DADD的特定序列具有很高的有效性.
- 观察到不同单乙四聚体的原始活性有显著差异,证实了PA的作用.
结论:
- 乙化 (PA) 的模式显著影响了胆酸盐的生物活性,特别是大米细胞中的原始活性.
- 基托桑的生物效应不仅由DP和DA决定,还由乙化单元的特定排列决定.
- 这项研究确立了胆素是信息载体分子,PA是它们功能的关键决定因素.
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