Probable transcription factor. Required for muscle structure. Its dual subcellular localization suggests that it may function both as a muscle adhesion complex protein and as a transcription factor, or work together with transcription factors, to influence gene expression. Thought to act as a molecular bridge between unc-97 and mhc-a at the M-line of muscles, possibly in a signaling role (By similarity). Localized in body wall muscle M-lines, dense bodies and muscle nuclei. The N-terminal part (1-106) mediates the nuclear localization, while the fourth zinc finger is required for the localization to M-lines and dense bodies.