Nucleolar protein 3 (apoptosis repressor with CARD domain) is a human gene encoded by the symbol, NOL3. It may also be known as: Apoptosis repressor with CARD; Muscle-enriched cytoplasmic protein; Myp; Nucleolar protein of 30 kDa; Nop30; FCM; NOP; nucleolar protein 3 (apoptosis repressor with CARD domain). The encoded protein has an amino acid length of 208 and a mass of 22.6 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat.