Anti-GS antibodies are protein reagents that detect specific antigens. The GS antigen is another term for the human protein glutamate-ammonia ligase, encoded by the GLUL gene. The protein is reported to be a glutamine synthetase that catalyzes the ATP-dependent conversion of glutamate and ammonia to glutamine. Canonically, it has an amino acid length of 373 residues and a mass of 42.1 kilodaltons. Its subcellular localization is in the cell membrane, mitochondria, and cytoplasm and it is reported to be expressed in endothelial cells. The GS protein is a member of the Glutamine synthetase protein family. Western Blot is the most common application for the GS antibodies listed below. ELISA and Immunohistochemistry are also common applications.