温度波动和受体-受体相互作用在细菌趋化信号和适应中的作用
Effects of thermal fluctuation and the receptor-receptor interaction in bacterial chemotactic signalling and adaptation
摘要:
细菌的趋化性是由受体的构象变化来控制的,以响应环境化学物质浓度的变化。在统计力学方法中,由于构象变化的信号传导是热力学平均量,取决于系统的温度和总能量,包括配体-受体相互作用和受体-受体相互作用。这一物理理论为生物学提供了对配体结合和受体信号传导问题合作的新理解。从现有的数据中可以获得多少实验支持这种方法?参数值是什么?实验的实用信息是什么?在这里,我们的理论和最近的实验结果之间的比较。虽然目前的比较只能是半定量或定性的,但一致性已清楚地显示出来。该理论还有助于对各种数据进行分类。
英文摘要:
Bacterial chemotaxis is controlled by the conformational changes of the receptors, in response to the change of the ambient chemical concentration. In a statistical mechanical approach, the signalling due to the conformational changes is a thermodynamic average quantity, dependent on the temperature and the total energy of the system, including both ligand-receptor interaction and receptor-receptor interaction. This physical theory suggests to biology a new understanding of cooperation in ligand binding and receptor signalling problems. How much experimental support of this approach can be obtained from the currently available data? What are the parameter values? What is the practical information for experiments? Here we make comparisons between the theory and recent experimental results. Although currently comparisons can only be semi-quantitative or qualitative, consistency is clearly shown. The theory also helps to sort a variety of data.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。