The red mold Neurospora crassa belongs to the group of sac fungi and serves researchers as a common model organism that allows a comparatively simple analysis of genetic information and the functions associated with it. The fungus has been the subject of scientific research for decades and its genetic information contained in around 10,000 genes has been completely decoded since the beginning of the 21st century. However, even this intensively studied organism contains components about which little is yet known. These include the so-called eisosomes, certain protein structures that are found in the cell membranes of mycelial fungi, yeast and algae and whose functions are still largely unexplored.