Protein-protein interactions (PPIs) are established when two or more proteins physically contact with each other. This phenomenon leads to specific biochemical events, such as molecular transport, signal transduction, and various metabolic pathways. In the process of virus infection of host cells, studying the interaction between virus proteins and host receptors is an important part of studying the mechanism of virus infection. https://www.creative-biostructure.com/coronavirus/protein-interaction-analysis-services-for-coronavirus-research-p9.htm
