相关实验视频
Updated: Jun 24, 2025

13:00
Engineering Antiviral Agents via Surface Plasmon Resonance
Published on: June 14, 2022
2.3K
病毒中的O-糖化:一个甜蜜的探戈
Annan Ming1,2, Jianxin Zhao3, Yihan Liu1,2
1Shandong Provincial Hospital Affiliated to Shandong First Medical University Jinan China.
mLife
|June 3, 2024
概括
O-糖化,一种重要的蛋白质修饰,对于病毒和细菌在感染和癌症中至关重要. 现在新的方法可以更深入地研究其在疾病和宿主免疫力中的作用,帮助抗病毒开发.
科学领域:
- 生物化学 生物化学
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 糖化是一种尚未研究的转化后修饰,对传染病和癌症中的微生物功能至关重要.
- 它的复杂性在历史上限制了对其在病毒病原和宿主免疫反应中的精确作用的研究.
- 最近的技术进步重新激发了对病毒O-糖化酶的兴趣,特别是在COVID-19大流行的情况下.
研究的目的:
- 审查了解与病毒相关的O-葡萄糖化相关的最新进展.
- 为突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出
- 为了强调宿主蛋白质上的细胞内O链接β-N-乙糖胺 (O-GlcNAc) 修饰.
主要方法:
- 质谱测量质量谱测量
- 化学生物学工具 化学生物学工具
- 分子动力学模拟的模拟.
主要成果:
- 最近的方法已经克服了研究O-糖化酶的先前局限性.
- 在病毒的附着,进入,组装,退出和宿主免疫逃逸中,O-糖化起着关键作用.
- 病毒O-GalNAc和宿主O-GlcNAc的修饰都是重点关注的关键领域.
结论:
- 方法的进步有助于更深入地了解病毒感染中的O-糖化.
- 对病毒和宿主O-糖化酶的洞察力可以为新型抗病毒策略和疫苗的开发提供信息.
- 进一步的研究有望改善传染病的预防和治疗.
相关概念视频
Protein Glycosylation
6.9K
Glycosylation, the most common post-translational modification for proteins, serves diverse functions. Adding sugars to proteins makes the proteins more resistant to proteolytic digestion. Glycosylated proteins can act as markers and receptors to promote cell-cell adhesion. Additionally, they have many essential quality control functions in the cell, such as correct protein folding and facilitating transport of misfolded proteins to the cytosol, which can be degraded.
Glycosylation occurs in...
Glycosylation occurs in...
6.9K
Oligosaccharide Assembly
2.8K
Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
Multiple sugar molecules that may or may...
Multiple sugar molecules that may or may...
2.8K
Proteoglycans
3.9K
Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
3.9K
Glycocalyx and its Functions
3.9K
The glycocalyx is a carbohydrate-rich, fuzzy-appearing layer on the outer surface of the cell membrane. It is highly hydrophilic, because of this it attracts large amounts of water to the cell's surface. This aids the cell's interaction with the watery environment and also helps it to obtain substances dissolved in the water. It is also important for cell identification, self/non-self determination, and embryonic development and is used in cell-to-cell attachments to form tissues.
3.9K
Leaky Scanning
5.1K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.1K
Viral Structure
62.1K
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
62.1K

