Required for organization of sarcomeres in body wall muscles and for maintaining normal mitochondrial position in myocytes. May interact with deb-1. Localizes to adhesion plaques and dense bodies between myocytes (PubMed:28978740). Co-localizes with deb-1 and atn-1 at dense bodies (PubMed:28978740). Predominantly localizes to the membrane-proximal region of dense bodies (PubMed:28978740). Expressed in body wall muscles, muscle arm attachment sites at the nerve ring, all non-striated muscles, and distal tip cells of the gonad (PubMed:28978740). Highly expressed in the origins and insertions of the vulval and anal depressor muscles and the spicule-associated and diagonal muscles of the male tail (PubMed:28978740). Expressed in small puncta throughout the uterus, stomatointestinal muscle and proximal gonadal sheath tissues (PubMed:28978740). Not expressed in the pharynx (PubMed:28978740). Expressed from embryos to adults (PubMed:28978740). First expressed at the twofold stage of embryonic elongation (PubMed:28978740). Localizes to distal tip cells of the gonad from the late L4 stage to adulthood (PubMed:28978740). SH3 domains 1 and 2 are required for its localization to the cell membrane of dense bodies. RNAi-mediated knockdown results in no defects in brood size or locomotion compared to wild-type (PubMed:28978740). No defects in cytoneme length of distal tip cells (PubMed:28978740).