May function as an adapter in striated muscle to couple protein kinase C-mediated signaling via its LIM domains to the cytoskeleton. Interacts via its LIM domains with various PKC isoforms (By similarity). Interacts via its PDZ domain with the ACTN2 C-terminal region. Interacts with MYOZ1, MYOZ2 and MYOZ3. Localized to the cytoplasm around nuclei and pseudopodia of undifferentiated cells and detected throughout the myotubes of differentiated cells. Colocalizes with ACTN2 at the Z-lines. Expressed primarily in skeletal muscle and to a lesser extent in heart. Also detected in brain and placenta. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry.