There are a number of ELISA Kits available for the measurement of Gacy, another term for the human protein, galactosylceramidase. Other synonyms may include: galactocerebrosidase, GALCERase, galactocerebroside beta-galactosidase, galactosylceramide beta-galactosidase, testis tissue sperm-binding protein Li 88E, and testis tissue sperm-binding protein Li 89A. It is encoded by the GALC gene to yield a protein 685 amino acids in length and 77.1 kDa in size. However, there are up to 4 reported isoforms. The protein is categorized into the Glycosyl hydrolase 59 family. Versions of Gacy are present in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.