Anti-SPR1 antibodies enable researchers to detect and measure the SPR1 antigen in biological samples. This target is a reported synonym of the SP4 gene, which encodes Sp4 transcription factor. This protein is known to function in the regulation of transcription, among other biological roles. The human version of SPR1 has a canonical amino acid length of 784 residues and a protein mass of 82 kilodaltons. It is reported to be localized in the nucleus of cells. Other names for this target antigen include HF1B, HF1B, and SPR-1. Indicated applications for SPR1 antibodies listed below include ELISA, Western Blot, and Immunohistochemistry.