Anti-FAM20B antibodies are used in the immunodetection of the protein FAM20B glycosaminoglycan xylosylkinase. In humans, the canonical protein has a reported length of 409 amino acid residues and a mass of 46.4 kDa. Its subcellular localization is in the Golgi. It is widely expressed across many tissue types. A member of the FAM20 protein family, FAM20B is known to be important for the 2-O-phosphorylation of xylose in the glycosaminoglycan-protein linkage region of proteoglycans thereby regulating the amount of mature GAG chains. Synonyms for this target antigen include glycosaminoglycan xylosylkinase, family with sequence similarity 20, member B, xylose kinase, and gxk1. FAM20B gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some FAM20B antibodies may have been used in research and have associated citations. Immunocytochemistry is a widely used application for these antibodies. ELISA, Western Blot, Immunofluorescence, and Immunohistochemistry are also common applications.