Anti-La ribonucleoprotein 7, transcriptional regulator antibodies are used for the immunodetection of the protein encoded by the LARP7 gene. In humans, the canonical protein has a reported length of 582 amino acid residues and a mass of 66.9 kDa. Its subcellular localization is in the nucleus. Alternative splicing is reported to yield 3 different isoforms for this protein. A member of the LARP7 protein family, it is reported to be a RNA-binding protein that specifically binds distinct small nuclear RNA (snRNAs) and regulates their processing and function. The gene encoding this protein is implicated in Alazami syndrome. Other names for this target antigen include HDCMA18P, PIP7S, hLARP7, la-related protein 7, La ribonucleoprotein domain family member 7, and ALAZS. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.