USMG5 localization in muscle fibers from 2-day-old WT and DMD pigs revealed distinctly different staining patterns, with a clear association of USMG5 to granular and vesicular structures in the cytoplasm of WT muscle cells, and a more diffuse USMG5 staining in most DMD muscle fibers (see Fig. 2B). Here, ATP5MK is linked to Duchenne muscular dystrophy.