Molecular interaction is a research area that focuses on the study of how molecules interact with each other in biological systems. This includes the investigation of how molecules such as proteins, nucleic acids, and small molecules interact to carry out cellular functions, as well as how these interactions can be targeted for therapeutic purposes. Researchers in this area use a variety of techniques, such as X-ray crystallography, nuclear magnetic resonance spectroscopy, and molecular modeling, to study the structure and dynamics of molecular interactions. Understanding molecular interactions is crucial for advancing our knowledge of basic biological processes and for developing new drugs and treatments for diseases.