Uncovering the biophysical mechanism of Receptor for Advanced Glycation Endproducts molecular function

细胞膜中的蛋白质在细胞与其周围环境的整合中发挥作用。 例如，晚期糖基化终产物受体（称为糖基化终产物）具有许多功能，包括在免疫中的作用。膜蛋白功能的一个重要方面是在整个细胞膜上移动以与其他生物组分相互作用的能力，并且表征这种移动对于理解这些蛋白质如何发挥功能至关重要。该项目提供了缺失的信息，以促进对其他生物成分如何影响细胞膜中的细胞运动的理解。该奖项还使研究生，本科生和高中生的培训。这些努力的合作伙伴包括两个项目：一个是大学预科项目，旨在增加爱荷华州攻读科学学位的种族多样化学生的数量，另一个项目旨在帮助爱荷华州人了解生物技术的发展。化学部的生命过程化学项目正在资助艾米丽A博士。来自爱荷华州州立大学的Smith使用荧光显微镜结合活细胞测量来表征化学定义的配体结合事件、细胞质相互作用和其他膜组分对细胞扩散和聚集的影响。主要的显微镜技术包括单粒子跟踪、荧光共振能量转移和光漂白后的荧光恢复。模式识别受体的分子机制的细节，包括配体的亲和力，价态，和化学成分对聚簇和扩散的影响将首次阐明。该项目提供了缺失的信息，以促进对与先天免疫和许多病理生理条件相关的重要受体的理解。

Proteins in the cell membrane play a role in integrating the cell with its surrounding environment. For example, the receptor for advanced glycation endproducts (called RAGE) has many functions including a role in immunity. An important aspect of membrane protein function is the ability to move throughout the entire cell membrane to interact with other biological components, and characterizing this movement is critical to understanding how these proteins function. This project provides missing information to advance the understanding of how other biological components affect RAGE movement in the cell membrane. The award also enables the training of graduate, undergraduate and high school students. Partners in these endeavors include two programs: one pre-college program aimed to increase the number of ethnically diverse Iowa students who pursue science degrees and the other aimed to helps Iowans understand biotechnology developments. The Chemistry of Life Processes Program in the Chemistry Division is funding Dr. Emily A. Smith from Iowa State University to characterize the effects of chemically-defined ligand binding events, cytoplasmic interactions, and other membrane components on RAGE diffusion and clustering using fluorescence microscopy combined with live cell measurements. The primary microscopy techniques to be used include single particle tracking, fluorescence resonance energy transfer and fluorescence recovery after photobleaching. Details of the molecular mechanism of a pattern-recognition receptor including the effects of ligand affinity, valency, and chemical composition on RAGE clustering and diffusion will be elucidated for the first time. This project provides missing information to advance the understanding of an important receptor associated with innate immunity and numerous pathophysiological conditions.