TSPYL6 (Testis-specific Y-encoded-like protein 6) is a 410 amino acid member of the nucleosome assembly protein (NAP) family. TSPYL6 is believed to be similar to Testis-specific Y-encoded protein 1 in form and function. The gene that encodes TSPYL6 is found on chromosome 2 which consists of 237 million bases encoding over 1,400 genes and making up approximately 8% of the human genome. A number of genetic diseases are linked to genes on chromosome 2. The lipid metabolic disorder sitosterolemia is associated with ABCG5 and ABCG8. An extremely rare recessive genetic disorder, Alstr