三面右侧β螺旋是糖甘相互作用的多功能折叠
Audrey A Burnim1, Keith Dufault-Thompson1, Xiaofang Jiang1
1National Library of Medicine, National Institutes of Health, Building 38A, Room 6N607, 8600 Rockville Pike, Bethesda, MD 20894 United States.
Glycobiology
|May 20, 2024
概括
右手β螺旋 (RHBH) 蛋白质折叠是结合碳水化合物的关键. 本综述详细介绍了RHBH结构如何促进稳定的甘氨酸相互作用,这对于生物过程至关重要.
科学领域:
- 生物化学 生物化学
- 结构生物学 结构生物学
- 葡萄糖生物学 葡萄糖生物学
背景情况:
- 蛋白质-甘氨酸相互作用对于许多生物功能至关重要.
- 右手β螺旋 (RHBH) 是一个越来越多地被认可的结构图案,涉及糖结合.
- RHBH 域遍布多种生物体,与粘合素和碳水化合物活性酶 (CAZyme) 的作用有关.
研究的目的:
- 审查使RHBH蛋白与甘氨酸相互作用的序列,机制和结构属性.
- 探索含有RHBH的蛋白质的进化起源及其功能多样化.
- 为了阐明RHBH蛋白所采用的糖结合的特定模式.
主要方法:
- 对含有RHBH的蛋白质的序列,结构和进化数据的分析.
- 检查具有RHBH折叠的多糖酶和甘酸酶的晶体结构.
- 对糖甘结合表面和相互作用机制的比较分析.
主要成果:
- RHBH蛋白质是从碳水化合物结合的祖先进化而来的,其降解功能是后来出现的.
- 3D结构的RHBH提供了一个电静态有利的表面,用于广泛的气与糖的结合.
- 通过循环插入和充电修饰,RHBH域表现出适应性,以结合各种甘氨酸和基质.
结论:
- RHBH折叠是用于甘氨酸识别和相互作用的多功能和稳定的平台.
- 了解RHBH结构-功能关系可以提高对生物甘氨酸结合的了解.
- 这些知识可以指导RHBH蛋白在糖生物学研究和生物技术中的合理设计和应用.
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