Ready-to-use ELISA kits are available for the detection of N-myc Downstream Regulated Gene 4, an alias of the protein, NDRG family member 4. The official gene symbol is NDRG4. The protein, with a mass of 38.5 kDa and length of 352 residues, is reported to be cytoplasmic. It is a member of the NDRG family and may be known by other names, including: SMAP-8, BDM1, smooth muscle-associated protein 8, brain development-related molecule 1, N-myc downstream-regulated gene 4 protein, and protein NDRG4.