作用素结合蛋白拉丁与呼吸道同胞病毒基质蛋白相关联
Shadi Shahriari1, Reena Ghildyal1
1Biomedical Research Cluster, Faculty of Science and Technology, University of Canberra, Canberra, Australia.
Journal of virology
|October 3, 2024
概括
呼吸道同胞性病毒 (RSV) 矩阵蛋白与宿主actin细胞骨架通过paladin相互作用. 这种相互作用对于有效的RSV芽和释放至关重要,提供了新的治疗点.
科学领域:
- 病毒学 病毒学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 呼吸道同胞性病毒 (RSV) 导致严重的呼吸道感染.
- RSV矩阵 (M) 蛋白与宿主活性蛋白的相互作用对于感染至关重要,但人们对其了解甚少.
- 了解宿主-病原体相互作用是开发抗病毒策略的关键.
研究的目的:
- 为了研究actin结合蛋白palladin在RSV M蛋白与宿主actin之间的相互作用中的作用.
- 阐明帕拉丁促进RSV M蛋白质与动素的结合的机制.
- 为了确定帕拉丁对RSV复制和释放的影响.
主要方法:
- RSV感染和细胞中的M蛋白表达.
- 孔焦显微镜可视化蛋白质的同位化.
- 细胞骨丰富和共免疫沉试验.
- 通过siRNA介导的拉丁倒置.
主要成果:
- RSV M 蛋白与乙微纤维和拉丁结合在一起.
- 帕拉丁与RSV M蛋白直接结合.
- 帕拉丁倒置降低了释放的RSV标位,同时增加了细胞相关的RSV.
- M 蛋白质存在于与微纤维连接的包容体中.
结论:
- 帕拉丁调解RSV M蛋白与宿主actin细胞骨架之间的相互作用.
- 帕拉丁在RSV病毒的芽和释放中起着至关重要的作用.
- 针对M蛋白-帕拉丁-阿克丁相互作用可能是RSV感染的新治疗方法.
相关概念视频
Leaky Scanning
4.5K
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...
4.5K
Cytoskeletal Linker Proteins - Plakins
2.0K
Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at cell junctions. Plakin functions are evolutionarily conserved and are primarily involved in organizing the different components of the cytoskeleton by crosslinking them to each other and connecting them to the cell-matrix and cell adhesion complexes. They are also known to interact with signal transducers, serve as scaffolds for signaling...
2.0K
Cytoskeletal Accessory Proteins
3.1K
The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton cannot function independently and depend on the accessory or ancillary proteins to effectively carry out their function. Accessory proteins associate with cytoskeletal filaments and their monomers, aiding filament formation and function. They also help in the cross-communication among cytoskeletal filaments. Cytoskeletal accessory proteins are...
3.1K
Actin Filament Depolymerization
3.0K
Actin filaments (F-actin) are composed of actin subunits. The dissociation of actin monomers can occur from either end of F-actin. The rate of dissociation is faster from the minus-end or the pointed end, where the actin subunits exist with a bound ADP, together known as ADP-actin. The depolymerization of F-actin is aided by proteins, including the actin-depolymerizing factor (ADF) and cofilin family of proteins, gelsolin, and glia maturation factor (GMF).
In F-actin, the ADF/cofilin proteins...
In F-actin, the ADF/cofilin proteins...
3.0K
Actin Polymerization and Cell Motility
5.8K
Actin is a family of globular proteins that are highly abundant in eukaryotic cells. It makes up approximately 1-5% of total cell protein concentration. Actin monomers polymerize to form a complex network of polarized filaments, the actin cytoskeleton, that plays a crucial role in many cellular processes, including cell motility, division, endocytosis, and metastasis of cancer cells.
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
5.8K
Intracellular Signaling Affects Focal Adhesions
2.8K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
2.8K


