Anti-replication termination factor 2 domain containing 1 antibodies are used in antigen-specific immunodetection in biological samples. The target replication termination factor 2 domain containing 1 is a known alias name of the protein replication termination factor 2, encoded by the RTF2 gene in humans. This 306-amino acid residue protein is a member of the Rtf2 protein family. It is localized to the chromosomes of the cell. It is reported to be expressed in the smooth muscle, cerebral cortex, and caudate.