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. Author manuscript; available in PMC: 2018 Nov 28.
Published in final edited form as: Crit Rev Biochem Mol Biol. 2018 Jul 4;53(4):382–402. doi: 10.1080/10409238.2018.1483889

Figure 1. Chemical structure of double-stranded DNA formed by the covalently linked sugar rings (shown in blue), phosphate groups (yellow) and nitrogenous bases.

Figure 1.

The segment shown on the diagram consists of three cytosine (green) / guanine (pink) Watson-Crick base pairs where two deoxycytidines (dC) are replaced with either cytidine (rC) or 1-β-D-arabinofuranosylcytosine (araC). The 2′-OH groups (highlighted in red) of the ribonucleotide and arabinofuranoside are on the opposite sides of the plane of the sugar. A color version of the figure is available online.