Ready-to-use ELISA kits are available for the detection of m-Nfs1, an alias of the protein, NFS1 cysteine desulfurase. The official gene symbol is NFS1. The protein, with a mass of 50.2 kDa and length of 457 residues, is reported to be cytoplasmic, nuclear and mitochondrial. It is a member of the Class-V pyridoxal-phosphate-dependent aminotransferase family, NifS/IscS subfamily and may be known by other names, including: NIFS, IscS, nitrogen-fixing bacteria S-like protein, nitrogen fixation 1 (S. cerevisiae homolog), NFS1 nitrogen fixation 1 homolog, and cysteine desulfurase mitochondrial.