Anti-choroideremia (Rab escort protein 1) antibodies are used in antigen-specific immunodetection in biological samples. The target choroideremia (Rab escort protein 1) is a known alias name of the protein CHM Rab escort protein, encoded by the CHM gene in humans. This 653-amino acid residue protein is reported to be a substrate-binding subunit of the Rab geranylgeranyltransferase (GGTase) complex. It is localized to the cytoplasm of the cell. It is reported to be widely expressed in many tissue types. Other synonyms for choroideremia (Rab escort protein 1) include DXS540, GGTA, and HSD-32.