使用合成受体控制精氨酸的生物效应
Laurent Vial1, R Frederick Ludlow, Julien Leclaire
1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
Journal of the American Chemical Society
|August 3, 2006
概括
研究人员开发了一种合成受体,可以与精氨酸结合,精氨酸是关键的聚胺. 这种人工宿主分子有助于阐明精氨酸的生物作用,并可能导致新的治疗方法.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 化学生物学 化学生物学
背景情况:
- 多氨酸在生物过程中至关重要,但其功能尚未完全理解.
- 与生物受体相比,聚胺合成受体的设计具有挑战性,因为结合亲和度较低.
- 需要人工宿主分子来研究聚胺细胞功能.
研究的目的:
- 开发一种合成受体,能够以高亲和力结合聚氨酸.
- 为了弥合合成宿主和生物聚胺受体之间的亲和差距.
- 用合成受体研究精氨酸对核酸的生物学影响.
主要方法:
- 使用动态组合选择来识别高亲和度合成受体.
- 该受体对精氨酸的结合亲和力是使用解离常数测量来确定的.
- 用核磁共振 (NMR) 研究和计算机模拟来分析精氨酸受体复杂结构.
- 评估了受体对精氨酸诱导的DNA结构变化的影响.
主要成果:
- 成功开发了一种合成受体,该受体与精氨酸结合,解离常数为22nM.
- 该受体表现出足够的亲和力,可以从DNA中取代精子.
- 受体逆转了精氨酸诱导的左手DNA形成,恢复了右手DNA结构.
- 结构分析表明,精氨酸和受体之间形成的伪-罗他森复合体.
结论:
- 动态组合选择对于创建高亲和力合成受体是有效的.
- 开发出的精氨酸受体可以调节精氨酸在DNA上的生物活性.
- 这种受体是研究精氨酸在细胞生物学中的作用的宝贵工具.
- 合成受体显示出治疗开发的潜力,并作为分子探针.
相关概念视频
01:28Synthetic Disvision of Polynomials
194
Synthetic division is an efficient algorithmic approach for dividing a polynomial by a linear binomial of the form x - c, where c is a real number. This method is helpful due to its streamlined process, which avoids the more cumbersome steps involved in the traditional long division of polynomials. It simplifies computation and serves as a practical tool for evaluating polynomials and identifying their factors.To perform synthetic division, one begins by listing the coefficients of the...
194
01:28Biological Methods for Microbial Control
903
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
903
02:55Synthetic Biology
5.6K
Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...
Golden rice
Golden rice is a genetically modified...
5.6K
02:59Biological Effects of Radiation
18.0K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
18.0K
01:31Internal Receptors
74.7K
Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
74.7K
01:57What is Conservation Biology?
24.4K
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials.
24.4K