相关实验视频
Updated: Jan 13, 2026

04:36
Assay for Adhesion and Agar Invasion in S. cerevisiae
Published on: November 8, 2006
15.4K
保存的逆向贩运机制通过Rab6-GARP-逆转酶-SNARE协调调节真菌发育和病原性
Yunfei Long1,2, Haoran Zhang1,2, Xingyuan Wu1,2
1State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China.
Plant, cell & environment
|January 12, 2026
概括
在Fusarium graminearum中,FgRab6对于逆行运输至关重要,确保了适当的戈尔基相关逆行蛋白 (GARP) 复合体组装. 这一途径对真菌发育和病原性至关重要,提供潜在的抗真菌标.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 菌群学 菌群学 菌群学是指菌群学
背景情况:
- 从内分体到跨戈尔吉网络 (TGN) 的逆向运输对细胞功能至关重要,但其分子机制尚未完全理解.
- 戈尔吉相关逆行蛋白 (GARP) 综合体在这个过程中发挥着关键作用.
- 虫菌 (Fusarium graminearum) 是一种重要的真菌病原体,影响作物产量.
研究的目的:
- 为了阐明由Fusarium graminearum中的GARP复合体介导的逆行运输的分子机制.
- 确定参与GARP复杂局部化和功能中的关键蛋白质.
- 调查这种途径在真菌病原性中的作用.
主要方法:
- 免疫沉,然后进行质谱学 (IP-MS) 来识别与GARP复合体相互作用的Rab GTPases.
- 基因删除研究 (淘汰赛) 来评估FgRab6.6的功能.
- 使用保存残留物分析蛋白质与蛋白质相互作用和局部化.
- 显微镜观察GARP复杂子单元和SNARE蛋白的局部.
主要成果:
- 确定了十个Rab GTPase与GARP复合体相互作用;只有FgRab6的删除破坏了GARP定位到TGN.
- 通过保存的Q73残留物,FgRab6直接与FgVps52相互作用,Q73残留物对真菌生长和致病性至关重要.
- FgRab6招募了FgVps52,启动了GARP复合体的组合,然后该复合体招募了回复分子复合体.
- 这一途径确保SNARE蛋白 (FgSnc1,FgTlg1,FgTlg2) 在内和TGN的正确定位.
- 破坏FgRab6-GARP-复原体通路严重损害了真菌的发育和毒性.
结论:
- 在F. graminearum中发现了一种新的FgRab6-GARP-复原体协调的囊泡贩运途径,该途径介于SNARE蛋白的逆向转运.
- 这一途径对于F. graminearum的致病性至关重要.
- 这些发现为囊泡运输提供了机理性的见解,并建议抗真菌干预的潜在目标.
关键词:
货物分类 货物分类类植物 (Fusarium graminearum) 是一种植物.盖尔普 (GARP) 的意思是哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈复原蛋白是复原体中的一个.斯纳雷 (Snare) 是一个小鸟.更多相关视频
相关概念视频
Rab Cascades
3.4K
Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
3.4K
Rab Proteins
4.9K
Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
4.9K
Export of Misfolded Proteins out of the ER
5.0K
After folding, the ER assesses the quality of secretory and membrane proteins. The correctly folded proteins are cleared by the calnexin cycle for transport to their final destination, while misfolded proteins are held back in the ER lumen. The ER chaperones attempt to unfold and refold the misfolded proteins but sometimes fail to achieve the correct native conformation. Such terminally misfolded proteins are then exported to the cytosol by ER-associated degradation or ERAD pathway for...
5.0K
Recycling Endosomes and Transcytosis
3.5K
The recycling endosome, also known as the endosomal recycling compartment (ERC), is a part of the slow-recycling process of the endocytic pathway. Molecules internalized through receptor-mediated endocytosis are either degraded in the lysosomes or are recycled to the plasma membrane through the fast- or slow-recycling route.
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
3.5K
SNAREs and Membrane Fusion
12.3K
Once a transport vesicle has recognized its target organelle, the vesicular membrane needs to fuse with the target membrane to unload the cargo. Transmembrane proteins called SNAREs present on organelle membranes and their vesicles, mediate vesicle fusion.
SNAREs exist in pairs that symmetrically interact and catalyze the fusion of the lipid bilayers in vesicle and target organelle. v-SNARE in the vesicle membrane are single polypeptide chains that bind to a complementary t-SNARE, composed of 2...
SNAREs exist in pairs that symmetrically interact and catalyze the fusion of the lipid bilayers in vesicle and target organelle. v-SNARE in the vesicle membrane are single polypeptide chains that bind to a complementary t-SNARE, composed of 2...
12.3K
Overview of Secretory Vesicles
9.3K
Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
Various proteins regulate the aggregation of molecules inside the secretory vesicles. Chromogranins...
9.3K

