Backbone (Bases + Linkages)

Molecular Biology chiefly concerns itself with understanding the interactions between the various systems of a cell, including the interactions between DNA, RNA and protein biosynthesis and learning how these interactions are regulated. All these techniques involve oligonucleotides.

According to your application, 5 types of bases are available, as a backbone (DNA, RNA, LNA®, 2' O-Me and PNA) including 3 different linkages (Phosphodiester, Methylphosphonate and Phosphorothiate).