J. Robin Harris is an Honorary Professor of the University of Mainz, who specialized in macromolecular electron microscopy. He has been the Series Editor of the Subcellular Biochemistry Book Series for many years and his broad scientific interests are reflected in the diversity of content of the Series. Viktor I. Korolchuk is a Professor of Cell Biology at Newcastle University, UK. His scientific interests lie in the area of intracellular protein trafficking and degradation pathways and their relevance to human health and ageing. The current focus of research in his laboratory is the key pro-longevity pathway called autophagy (literally self-eating) which is essential for cellular quality control and homeostasis.