Anti-GS2 antibodies enable researchers to detect and measure the GS2 antigen in biological samples. This target is a reported synonym of the RAB27A gene, which encodes RAB27A, member RAS oncogene family. This protein is known to function in exocytosis and melanocyte differentiation, among other biological roles. The human version of GS2 has a canonical amino acid length of 221 residues and a protein mass of 24.9 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the lysosomes and membrane of cells and notably expressed in many tissues, such as the appendix and colon. GS2 is a member of the Rab protein family. A number of GS2 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.