在Vibrio parahaemolyticus中对脂质A的二次基转移酶的表征
Danyang Huang1, Lingyan Chen2, Yang Wang2
1School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Biotechnology, Jiangnan University, Wuxi 214122, China.
Microbiological research
|April 9, 2024
概括
维布里奥帕拉海莫利蒂克斯VP_RS12170基因特别添加3-基米里斯酸盐到脂质A的2'-位置. 这种依赖Kode的过程对于理解Vibrio parahaemolyticus脂质A的结构和生物合成至关重要.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 脂质A对Vibrio parahaemolyticus的功能至关重要.
- 之前的研究已经确定了V. parahaemolyticus. 中潜在的脂质A修饰基因.
- 在V. parahaemolyticus脂质A中二次化的多样性需要进一步研究.
研究的目的:
- 确定负责V. parahaemolyticus中脂质A的二次化的特定基因.
- 为了阐明已识别的基因的酶活性和基质特异性.
- 了解这种修饰在V. parahaemolyticus脂质A生物合成途径中的作用.
主要方法:
- 对V. parahaemolyticus VP_RS12170.的基因鉴定和表征
- 构建和分析缺乏特定的脂质A修饰酶的Escherichia coli突变菌株.
- 在大肠杆菌突变体中,V. parahaemolyticus VP_RS12170的过度表达.
- 脂质A分离和结构分析使用薄层染色学 (TLC) 和高性能液体染色学-并列质谱学 (HPLC-MS/MS).
主要成果:
- 证实V. parahaemolyticus基因VP_RS12170是一种特定的脂质A3-基-转移酶.
- VP_RS12170将3-氧米里斯酸盐转移到脂质A的2位.
- 该酶的活性依赖于Kho (2-keto-3-deoxy-manno-heptose) 并且更喜欢Kho-lipid IV A作为基质.
结论:
- VP_RS12170是V. parahaemolyticus脂质A生物合成中的一个关键酶,负责特定的二次化.
- 这种修改是Kode-依赖的,突出显示了Kode转移和化之间的相互作用.
- 这些发现有助于更深入地了解V. parahaemolyticus lipid A. 的结构多样性和生物合成途径.
关键词:
埃舍里希亚大肠杆菌 (Escherichia coli) 是一个大肠杆菌.脂质A是一种脂质.LpxLL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL LpxL一个LpxNN二次性乙转移酶的作用这种病毒是Vibrio parahaemolyticus.更多相关视频
07:37Click-Chemistry Based Fluorometric Assay for Apolipoprotein N-acyltransferase from Enzyme Characterization to High-Throughput Screening
Published on: May 13, 2020
1.9K
07:58Laboratory Techniques Used to Maintain and Differentiate Biotypes of Vibrio cholerae Clinical and Environmental Isolates
Published on: May 30, 2017
11.0K
相关概念视频
01:35Asymmetric Lipid Bilayer
7.2K
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
7.2K
01:45Tail-anchoring of Proteins in the ER Membrane
3.1K
Tail-anchored, or TA, proteins are estimated to make up to 3-5% of membrane proteins found in the eukaryotic cell. Such proteins have a single transmembrane domain located approximately 30 amino acid residues upstream from the C-terminal end. As a result, the signal recognition particle (SRP) cannot guide a TA protein to the ER membrane for cotranslational insertion. Hence, they are integrated into the ER membrane post-translationally using their C-terminal end as the anchor. TA proteins...
3.1K