Anti-RGL2 antibodies are used in the immunodetection of the protein ral guanine nucleotide dissociation stimulator like 2. In humans, the canonical protein has a reported length of 777 amino acid residues and a mass of 83.5 kDa. Alternative splicing is reported to yield 2 different isoforms for this protein. RGL2 is a suspected guanine nucleotide exchange factor. Synonyms for this target antigen include KE1.5, RAB2L, GDS-related protein, ralGDS-like 2, ralGDS-like factor, ras-associated protein RAB2L, and HKE1.5.