Listed are ELISA Kits for the detection of transition protein 1 (during histone to protamine replacement), an alias name of transition protein 1. The human protein, encoded by the gene TNP1, is 55 amino acid residues long and has a mass of 6,424 daltons. It is a member of the Nuclear transition protein 1 family. This protein is reported to have a nuclear cellular localization. This target may also be known as: spermatid nuclear transition protein 1, STP-1, transition protein 1 (during histone to protamine replacement), and TP1.