Anti-RPS19 antibodies are used in the immunodetection of the protein ribosomal protein S19. In humans, the canonical protein has a reported length of 145 amino acid residues and a mass of 16.1 kDa. Its subcellular localization is in the nucleus and cytoplasm. A member of a the Eukaryotic ribosomal protein eS19 protein family, RPS19 is a known component of the small ribosomal subunit. Synonyms for this target antigen include DBA1, LOH19CR1, S19, eS19, 40S ribosomal protein S19, and DBA.