|
This represents a short section of the DNA molecule (17 base pairs).
The outside edges of the DNA double helix are composed of alternating deoxyribose and phosphate groups. Deoxyribose shows as 5-membered rings - 4 greys [carbon] and 1 oxygen [red], with another projecting carbon connecting to phosphate, which is orange with projecting oxygens [red]. Across the middle of the molecule are the bases, showing the nitrogen atoms in blue. In each case the bases do not directly contact their partner on the opposite strand, to which they are held by hydrogen bonds. Hydrogens are not shown in this display, except at 3' ends (white dots). |