谷氨在谷氨的生物合成中的作用 特雷迪尼巴克
Youjung Sung1, Bailey W Miller1, Eric W Schmidt1
1Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States.
Organic letters
|February 17, 2025
概括
研究人员发现了一种新的途径",谷素",用于通过海洋细菌Teredinibacter turnerae在teredinibactins中合成 thiazoline. 这一发现使得通过生物和化学方法能够制造出新型芳香的阿林合物.
科学领域:
- 海洋微生物学 海洋微生物学
- 自然产品的合成自然产品的合成
- 生物化学 生物化学
背景情况:
- 特雷迪尼巴克丁是由Teredinibacter turnerae产生的β-resorcyclic thiazoline dipeptides,这是海洋船的一种共生体.
- 了解特有的化学结构的生物合成,如 thiazoline 对于天然产品药物发现至关重要.
研究的目的:
- 为了阐明teredinibactins中的 thiazoline 部分的生物合成途径.
- 通过模仿已识别的生物合成路径,通过化学合成天然和非天然的teredinibactins.
主要方法:
- 使用Teredinibacter turnerae T7901进行养研究,以追踪 thiazoline 成分的来源.
- 基于拟议的生物合成中间体的特雷迪尼巴克的化学合成,包括天然和非天然的类似物.
主要成果:
- 泰雷迪尼巴克中的 thiazoline 环是由谷氨及其代谢物通过一种新的非正规途径衍生出来的.
- 这一途径被命名为"谷氨酸"途径.
- 我们成功地合成了天然和非天然的teredinibactins,验证了生物合成模仿.
结论:
- 发现葡萄素路径为微生物天然产品生物合成提供了新的见解.
- 这项工作扩大了为潜在应用生成多种芳香性阿林合物的工具包.
相关概念视频
01:22Phase II Reactions: Glutathione Conjugation and Mercapturic Acid Formation
132
Glutathione, a tripeptide made up of glutamate, cysteine, and glycine, is a critical player in the detoxification of drugs and xenobiotics via a process known as glutathione conjugation or mercapturic acid formation. This phase II biotransformation reaction involves the covalent binding of glutathione to a drug or its metabolite, enhancing the compound's water solubility and enabling its excretion.
Several distinctive characteristics distinguish glutathione conjugation from other phase II...
Several distinctive characteristics distinguish glutathione conjugation from other phase II...
132
01:24Phase II Reactions: Glucuronidation
239
Glucuronidation, a pivotal phase II biotransformation process, involves the coupling of glucuronic acid to a drug or xenobiotic. Given its widespread occurrence and critical role in drug metabolism, it's considered the most crucial phase II reaction. It enhances the water solubility of substances, aiding their expulsion from the body. The driving force behind these reactions is a group of enzymes known as UDP-glucuronosyltransferases (UGTs). UGTs facilitate the transfer of a glucuronic acid...
239
01:19Phase II Reactions: Miscellaneous Conjugation Reactions
35
Phase II biotransformations are detoxification mechanisms that conjugate xenobiotics with endogenous substances, neutralizing their toxicity.
A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
35
01:14Drug Metabolism: Phase II Reactions
3.5K
Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
3.5K
01:24Glucagon-like Receptor Agonists
291
Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
291
01:16TGF - β Signaling Pathway
7.2K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.2K