Probable cytoskeleton-associated protease required for normal muscle growth. Involved in function, maturation and stabilization of the neuromuscular junction. May act by cleaving muscle-specific proteins such as FLNC (By similarity). Interacts with IGFN1 and FLNC. Highly expressed in skeletal muscle. The disease is caused by variants affecting the gene represented in this entry. Belongs to the transglutaminase-like superfamily. Unlikely isoform. Aberrant splice sites. Unlikely isoform. Aberrant splice sites.