Anti-SNIP1 antibodies are used in the immunodetection of the protein Smad nuclear interacting protein 1. In humans, the canonical protein has a reported length of 396 amino acid residues and a mass of 45.8 kDa. Its subcellular localization is in the nucleus. It is found to be widely expressed, with highest expression in heart and skeletal muscle. SNIP1 is said to be required for pre-mRNA splicing as component of the spliceosome. Synonyms for this target antigen include FHA domain-containing protein SNIP1 and PML1 homolog.