Awon enu alaidogba awon atinrin DNA lo nje enu 5' (arun akoko/five prime) ati 3' (eta akoko/three prime), pelu enu 5' to pari pelu adipo oniyofosforu ati enu 3' to pari pelu adipo haidroksi.. 
These Unu structures can be recognized by sperírí z-DNA binding proteins and may be involved in the regulation of transcription.Olóògùn DNA miranfor a number of years exobiologists have proposed the exisgúsù of a shadow olùpọ́njúos, a postupẹja  Microbial Bios of earth that uses radically different Bioble and Molecular than OFR to known life.. 