 Eukaryotic and archaeal release factors are similar, with the naming changed to "eRF" for "eukaryotic release factor" and vice versa.a/eRF1 can recognize all three stop codons, while eRF3 (archaea use EF-1α instead) works just like RF3.a/eRF1 () do not show significant sequence similarity with their bacterial counterparts and are considered to form a separate family.