It was our great pleasure to invite Prof. Gaetano T. Montelione to give us an online seminar entitled “Proteins Flex to Function: Roles of Conformational Plasticity in Protein Function”. Prof. Montelione is currently endowed chair in structural bioinformatics and professor of chemistry at the Rensselaer Polytechnic Institute, well known as an expert and innovator in the fields of structural biology and protein NMR. The seminar reminded us that the dynamic nature of proteins should always be kept in mind in the structural and functional studies of proteins.