Anti-QARS antibodies enable researchers to detect and measure the QARS antigen in biological samples. This target is a reported synonym of the QARS1 gene, which encodes glutaminyl-tRNA synthetase 1. This protein is known to function in brain development and the regulation of apoptosis, among other biological roles. The human version of QARS has a canonical amino acid length of 775 residues and a protein mass of 87.8 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cytoplasm of cells and widely expressed in many tissue types. Other names for this target antigen include GLNRS, MSCCA, and PRO2195. Some QARS antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.