Microtubule-actin crosslinking factor 1 (MACF1/ACF7) belongs to spectraplakin family of proteins which also includes mammalian Bpag1/dystonin, Drosophila Short Stop (Shot) and Caenorhabditis elegans Vab-10. These are large actin-microtubule linker molecules that are essential for various biological processes such as neuronal degeneration, wound healing, gastrulation. MACF1, located on mouse chromosome 4D2.2, was found to play an important role during neurogenesis- it was shown that MACF1 regulates the organization of neuronal microtubules which is essential for axon extension. Furthermore, MACF1 is required in controlling focal adhesion assembly and dynamics. MACF1 behaves as an actin-regulated ATPase and it has the ability to target microtubules that track along F-actin to focal adhesions. MACF1 was also implicated in regulating filopodia formation.