酸结合增强了结构稳定性,并增强了细菌内素的部分折叠形状的溶解活性
Mayur Mohan Ghate1, Khushboo Gulati1, Krishna Mohan Poluri2
1Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
Archives of biochemistry and biophysics
|August 19, 2024
概括
酸盐通过形成复合物来稳定部分折叠的内素 (T4L和T7L). 这些酸盐-内素复合物保持结构完整性,并在酸性条件下增强酸活性.
科学领域:
- 生物化学 生物化学
- 宏观分子科学 宏观分子科学
- 蛋白质折叠过程中的蛋白质折叠
背景情况:
- 多糖合物聚合物充当伴侣,通过特定的相互作用帮助蛋白质折叠.
- 部分折叠的内素 (T4L,T7L) 在低pH下缺乏溶解活性.
- 非共价相互作用驱动蛋白质多糖化合物复合体的形成,经常保持蛋白质活性.
研究的目的:
- 研究阿尔金酸盐与T4L和T7L内素的结合.
- 为了评估酸盐-内醇素复合物的结构和功能稳定性.
- 评估阿尔金酸盐复合物对在酸性pH值下内素溶解活性的影响.
主要方法:
- 使用了生物物理和生物化学技术.
- 谱学方法分析了结构变化.
- 异热定位热量计 (ITC) 和扫描传输电子显微镜 (STEM) 证实了复杂的形成.
主要成果:
- 酸盐结合诱导了T4L和T7L中的差分结构调制.
- 确认了酸盐和部分折叠的T4L/T7L之间的复杂形成.
- 酸盐-内醇素复合物表现出化学和酶稳定性.
- 在复杂化后,在酸性pH值下,内素的炎症活性得到增强.
结论:
- 酸盐有效地保持了部分折叠的T4L和T7L内素的结构和功能完整性.
- 在高度酸性条件下,酸盐作为稳定内素的强有力的基质.
- 这些发现突出了阿尔金酸盐在具有挑战性的环境中维持酶活性的潜力.
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