独特的O-甲基转移酶的进化传播指导着发现独特的含有异酸盐的,帕米的发现
Hyunbin Lee1, Sho Hee Park1, Jiyoon Kim1
1Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
研究人员通过分析/蛋白质L-阿斯巴提尔O-甲基转移酶 (PAMTs) 来发现了一类新型的天然产品,称为帕米代. 这一发现扩大了我们对核糖体合成和翻译后修饰 (RiPPs) 生物合成的理解.
科学领域:
- 自然产品生物合成 自然产品生物合成
- 生物化学 生物化学
- 生物信息学是一种生物信息学.
背景情况:
- 核糖体合成和翻译后修饰 (RiPPs) 是由前体的酶修饰形成的多样化的自然产物.
- RiPPs的结构和生物合成多样性在很大程度上仍未被探索,这阻碍了新型子类的发现.
研究的目的:
- 通过研究/蛋白L-阿斯巴提尔O-甲基转移酶 (PAMTs) 的作用和同质性来确定新的RiPP子类.
- 根据PAMTs在生物合成中的功能定义一个新的RiPP子类.
主要方法:
- 在各种RiPP子类中对PAMT进行基于同质性的生物信息分析.
- 对PAMT活动和基质要求的生物化学和结构分析.
主要成果:
- 在不相关的RiPP子类中确定了高度同源的PAMT,这表明进化基因传播.
- 定义了一个新的RiPP子类,命名为pamtides,基于作为主要修饰酶的PAMTs.
- 发现了超过1500个BGC,其中PAMT作为主要修饰酶,以及超过2800个BGC,它们执行二次修饰.
结论:
- 具有二次生物合成作用的蛋白质的基因组挖掘是发现新型RiPP途径的有效策略.
- 通过特定的中间体,PAMT通过特定的中间体将酸盐转化为异酸盐,通常需要特定的结构进行修改.
更多相关视频
08:37The Application of Open Searching-based Approaches for the Identification of Acinetobacter baumannii O-linked Glycopeptides
Published on: November 2, 2021
17:12Profiling of Methyltransferases and Other S-adenosyl-L-homocysteine-binding Proteins by Capture Compound Mass Spectrometry CCMS
Published on: December 20, 2010
相关概念视频
Translocation of Proteins into the Mitochondria
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
Allosteric Proteins-ATCase
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
Peptide Identification Using Tandem Mass Spectrometry
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
Covalently Linked Protein Regulators
These groups modify specific amino acids in a protein....
Ligand Binding and Linkage
