Core B: Macromolecular and Cellular Structure Core

项目摘要 大分子和细胞结构核心的主要目标是提供尖端， 响应U 54 FTD中心的需求和发现的结构表征创新平台 没有墙。这个无墙FTD中心的长期目标是了解 tau蛋白，它是如何被伴侣蛋白和辅伴侣蛋白稳定的，以及它是如何被引导降解的。 溶酶体该核心将使用cryoEM的最新方法来确定原子分辨率cryoEM 如项目1、2中所定义的相关蛋白质和蛋白质复合物的结构，并提供细胞 通过cryoEM-Tomography的tau溶酶体降解的背景。高分辨率研究将通过 关键蛋白质-蛋白质复合物的表达和体外重建以及新型cryoEM网格 由Agard实验室开发的技术。此外，核心将利用其生物化学专业知识， 通过RTQuiC测定，确定该中心其他部分是否存在tau种子。在一起，贡献 从这个核心将是重要的，因为它们将揭示决定tau蛋白周转的基本机制，并提供 潜在治疗干预的新靶点。

PROJECT SUMMARY The primary objective of the Macromolecular and Cellular Structure Core is to provide cutting edge, innovative platforms for structural characterization responsive to needs and discoveries of the U54 FTD Center without Walls. The long-term goal of this FTD Center without Walls is to understand the overall metabolism of tau, how it is stabilized by chaperones and cochaperones and how it is channeled for degradation by the lysosome. This core will use the latest methodologies in cryoEM to determine atomic resolution cryoEM structures of relevant proteins and protein complexes as defined in Projects 1, 2 and to provide a cellular context for tau lysosomal degradation via cryoEM-Tomography. The high-resolution studies will be enabled via the expression and in vitro reconstitution of critical protein-protein complexes and novel cryoEM grid technologies developed by the Agard lab. Additionally, the core will use its biochemical expertise to quantify the existence of tau seeds for the other parts of the Center via RTQuiC assays. Together, the contributions from this Core will be significant as they will reveal fundamental mechanisms dictating tau turnover and provide novel targets for potential therapeutic intervention.