Anti-RNPS1 antibodies are used in the immunodetection of the protein RNA binding protein with serine rich domain 1. In humans, the canonical protein has a reported length of 305 amino acid residues and a mass of 34.2 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 3 different isoforms have been reported for this protein. It is ubiquitously expressed across many tissue types. A member of the Splicing factor SR protein family, RNPS1 is known to be involved with RNA splicing and the regulation of apoptosis. Synonyms for this target antigen include RNA binding protein with serine-rich domain, RNA-binding protein S1, serine-rich domain, SR protein, SR-related protein LDC2, and E5.1. RNPS1 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of RNPS1 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.