QSOX2 encodes the human gene, Quiescin sulfhydryl oxidase 2. It may also be known as: Sulfhydryl oxidase 2; Quiescin Q6-like protein 1; Neuroblastoma-derived sulfhydryl oxidase; Sulfhydryl oxidase 2 ; thiol oxidase 2; QSCN6L1; SOXN; quiescin Q6 sulfhydryl oxidase 2. The encoded protein is an enzyme with an amino acid length of 698 and a mass of 77.5 kDa. Other isoforms may exist. QSOX2 is a member of the Quiescin-sulfhydryl oxidase (QSOX) family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Arabidopsis, Zebrafish, Frog, Chicken.