The book "Supramolecular Structure and Function 9" offers a comprehensive examination of the structure-function relationships of biological macromolecules and the associated biophysical techniques. It is based on the international summer schools organized since 1981 by the Ruđer Bošković Institute in Zagreb and the Croatian Biophysical Society. These schools promote interdisciplinary exchange and collaboration among scientists from various fields. The contributions in this volume come from recognized experts and cover a wide range of topics that are of interest to PhD students and postdoctoral researchers in the biosciences. The combination of biophysical principles and molecular biological approaches makes this work a valuable resource for researchers engaged with the latest developments in biophysics and related disciplines.