A DNA occurs under greater dehydration than B DNA therefore it is more compact than B DNA, it also has 11bp/turn, the diameter is 23A, the plane of the bases is tilted at a 30 degree angle and the...
This will only occur if the alpha carbon to the carbonyl group can be protonated. The keto form of acetone (for example), would be a -CH2COCH3. The alpha carbon has lost a hydrogen and is negatively...