Intra-and Inter-Species Communication in Bacteria

描述（由申请人提供）：本研究的长期目标是探索细菌用于种内和种间细胞间通讯的分子机制。本提案的目的是确定和研究模型哈氏弧菌信号转导途径，该途径将细胞外群体感应信号分子（称为Al-1和Al-2）的检测与靶基因反应联系起来。基因，蛋白质，蛋白质-蛋白质相互作用，蛋白质修饰和信号分子参与这个细胞-细胞通信系统的定义将导致如何检测信号的分子理解，以及如何整合，处理和转导这些信息来控制社区规模的行为。分析哈维氏弧菌群体感应信号电路对于理解细菌如何感知和反应其环境，它们如何响应时间上一致的线索，以及它们如何相互沟通以协调行为应该是有价值的。由于调控过程复杂，涉及种内、种间、细胞内和细胞间的信号传递，应该揭示有趣的新机制

DESCRIPTION (provided by applicant): The long-term goal of this research is to explore the molecular mechanisms that bacteria use for intra-and inter-species cell-cell communication. The objective of this proposal is to identify and study the model Vibrio harveyi signal transduction pathway that links detection of extracellular quorum sensing signal molecules termed Al-I and Al-2 to target gene responses. Definition of the genes, proteins, protein-protein interactions, protein modifications and signaling molecules involved in this cell-cell communication system will lead to a molecular understanding of how signals are detected and how this information is integrated, processed, and transduced to control behavior on a community scale. Analyzing the V. harveyi quorum sensing signaling circuit should be valuable for understanding how bacteria perceive and react to their environment, how they respond to temporally coincident cues, and how they communicate with one another to coordinate behavior. Since the regulatory process is complex and involves both intra-species, inter-species, intra-cellular and inter-cellular signal transmission, interesting new mechanisms should be revealed