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Updated: Sep 13, 2025

Purification and Visualization of Lipopolysaccharide from Gram-negative Bacteria by Hot Aqueous-phenol Extraction
05:31

Purification and Visualization of Lipopolysaccharide from Gram-negative Bacteria by Hot Aqueous-phenol Extraction

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在Helicobacter pylori脂多糖化合物结构和功能方面的进展

Xiaoqiong Tang1,2, Alfred Tay3, Mohammed Benghezal1,2

  • 1Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.

FEMS microbiology reviews
|July 28, 2025
PubMed
概括

杆菌的脂多糖 (LPS) 是细菌生存和胃疾病的关键. 了解其结构和生物合成为开发针对这种病原体的基于LPS的葡萄糖结合物疫苗提供了新的途径.

关键词:
在Helicobacter Pylori的研究中,这是一种ADP-heptose.殖民化 殖民化的殖民化葡萄糖转移酶的使用方法脂多糖类糖化物 (Lipopolysaccharide) 是一种多糖类糖.疫苗 疫苗 疫苗 疫苗

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Formation of Lipopolysaccharides01:19

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Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin,...
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Outer Layers of the Cell Envelope

The outermost layers of prokaryotic cells play a critical role in their survival, virulence, and interaction with the environment. These layers, often composed of polysaccharides, polypeptides, or proteins, form protective and adhesive structures that vary in organization and function.Capsules and Slime LayersCapsules are highly organized, tightly bound layers that firmly attach to the bacterial cell wall. Capsules are usually made of polysaccharides, though some are made of polypeptides. These...
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Helicobacter pylori, a resilient gram-negative bacterium, can thrive in the stomach's harsh, acidic environment. Infection with H. pylori leads to a cascade of events within the stomach lining. One of the critical disruptions caused by this bacterium is the interference with somatostatin production, a hormone responsible for regulating acid secretion. This interference tips the balance, escalating acid secretion and diminishing bicarbonate levels. This imbalance compromises the defensive...
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The bacterial cell wall is an essential structural component that encases the plasma membrane, preserving cellular integrity, determining shape, and protecting against osmotic stress. This rigid yet flexible structure primarily comprises peptidoglycan, a polymer that forms a mesh-like matrix conferring mechanical strength and flexibility.Peptidoglycan Composition and StructurePeptidoglycan, the core of the bacterial cell wall, comprises alternating units of N-acetylglucosamine (NAG) and...
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