An immensely valuable asset to the field of synthetic biology would be a means to genetically endow magnetism to living organisms, which is still an unsolved challenge due to the lack of appropriate tools. In contrast, biomagnetism is innate to magnetotactic bacteria, mud-dwelling microbes which as geomagnetic sensors biomineralize iron nanocrystals with exceptional properties, the magnetosomes. However, transplantation of magnetosome biosynthesis has remained unachieved for many years, owing to its complexity and lack of knowledge of genetic determinants. In this project, we are following a systematic approach for endogenous magnetization of diverse organisms based on bacterial magnetosome biosynthesis. This might be exploited for bioproduction of tailored magnetic nanomaterials with novel and tunable properties. It could be further utilized to generate intracellular labels, tracers and actuators for magnetic manipulation and analysis of cells and organisms.