Anti-RSPH4A antibodies are used in the immunodetection of the protein radial spoke head component 4A. In humans, the canonical protein has a reported length of 716 amino acid residues and a mass of 80.7 kDa. Its subcellular localization is in the cytoplasm. Up to 3 different isoforms have been reported for this protein. It is reported to be expressed in trachea, lungs, and testes. A member of the Flagellar radial spoke RSP4/6 protein family, RSPH4A is a known component of the axonemal radial spoke head which plays an important role in ciliary motility. The RSPH4A gene has been associated with the disease, Ciliary dyskinesia. Synonyms for this target antigen include radial spoke head 4 homolog A, radial spoke head-like protein 3, radial spokehead-like 3, and radial spoke head protein 4 homolog A. RSPH4A gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. A number of RSPH4A antibodies have been mentioned in research publications and have associated citations. Immunofluorescence is a widely used application for these antibodies. Western Blot, Immunocytochemistry, and Immunohistochemistry are also common applications.