Protein consists of a precise sequence of amino acids and fold into a specific three-dimensional shape or conformation. They have precisely engineered moving parts, and their mechanical actions are closely related to chemical events, which are the basis of dynamic processes in living cells. The interaction between protein and other molecules is the frontier and hotspot of life science research in the 21st century. Research has shown that a protein's ability to bind and interact with other molecules enables it to act as a catalyst, signal receptor, switch, motor or tiny pump. Various important physiological processes in cells, such as gene replication, transcription, translation, cell cycle regulation, signal transduction, immune regulation, cell differentiation and death, etc., are all accomplished through proteins and their interactions with other molecules.
A New Method for Protein-Protein Interactions Detecting in Periplasm 
