耶尔西尼亚瘟疫外膜蛋白与人体维特龙菌素C端域之间的相互作用
Laurine Vasseur1, Florent Barbault1, Antonio Monari1
1Université Paris Cité and CNRS, ITODYS, F-75006 Paris, France.
The journal of physical chemistry. B
|April 15, 2024
概括
耶尔西尼亚瘟疫通过招募维特罗涅蛋白质来逃避免疫检测,形成一个保护性盾牌. 了解这种与艾尔蛋白的相互作用可能会导致针对瘟疫的新型抗菌剂.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
背景情况:
- * Yersinia pestis,瘟疫细菌,使用免疫逃避策略.
- *人体血中的维特罗涅蛋白保护Yersinia pestis免受免疫溶解的影响.
- * 细菌外膜蛋白Ail调解了维特龙菌素的招募.
研究的目的:
- * 为了研究Yersinia pestis Ail. 招募维特龙菌素的分子机制.
- * 为了确定驱动Ail和维特龙菌素之间的复杂形成的关键相互作用.
- * 探索基于这种相互作用来设计新的抗菌剂的潜力.
主要方法:
- * 进行了全原子大规模分子动力学模拟.
- *使用了Yersinia pestis外膜的现实模型,其中嵌入了Ail.
- *分析了复杂化接口和关键氨基酸残留物.
主要成果:
- *观察到一个稳定的复合体在维特罗内克丁和艾尔之间.
- *复杂的形成是由无序的蛋白质区域之间的相互作用介导的.
- *确定了对复杂化至关重要的特定氨基酸.
结论:
- * 艾尔-维特龙涅丁相互作用为Yersinia pestis提供了一个稳定的盾牌.
- *已识别的氨基酸为合理的药物设计提供了目标.
- * 抑制维特罗内克丁招募是一种新型抗菌策略,可以对抗瘟疫.
相关概念视频
Intracellular Movement of Viruses and Bacteria
2.8K
Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a...
2.8K
Pinching-off of Coated Vesicles
3.1K
Vesicle budding is orchestrated by distinct cytosolic proteins such as adaptor proteins, coat proteins, and GTPases. To initiate vesicle budding, membrane-bending proteins containing crescent-shaped BAR domains bind to the lipid heads in the bilayer and distort the membrane to form a protein-coated vesicle bud. Adaptors proteins such as AP2 for clathrin-coated vesicles can nucleate on the deformed membrane. Finally, coat proteins such as clathrin or COPI and COPII assemble into a coat forming...
3.1K
Glycocalyx and its Functions
4.0K
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.
4.0K
Clathrin Coated Vesicles
7.0K
Clathrin-coated vesicles use endocytosis to transport receptors and lysosomal hydrolases from the Golgi to the lysosome in the late secretory pathway. Clathrin-mediated endocytosis was the first described endocytic process, and Clathrin-coated vesicles remain one of the most well-studied transport vesicles. The molecular machinery that generates clathrin-coated vesicles comprises over 50 proteins that precisely coordinate vesicle formation. Cell surface receptors concentrated in indented sites...
7.0K
Surface Membrane Barriers
1.1K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
1.1K
Antimicrobial Proteins
984
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
984


