There are a number of ELISA Kits available for the measurement of Sialyltransferase 9, another term for the human protein, ST3 beta-galactoside alpha-2,3-sialyltransferase 5. Other synonyms may include: CMP-NeuAc:lactosylceramide alpha-2,3-sialyltransferase, ST3 beta-galactoside alpha-23-sialyltransferase 5, alpha 2,3-sialyltransferase V, sialyltransferase 9 (CMP-NeuAc:lactosylceramide alpha-2,3-sialyltransferase; GM3 synthase), and SATI. It is encoded by the ST3GAL5 gene to yield a protein 418 amino acids in length and 48 kDa in size. However, there are up to 3 reported isoforms. The protein is categorized into the Glycosyltransferase 29 family. Versions of Sialyltransferase 9 are present in other organisms, including: Mouse, Rat.