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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Anup Padwal
The conformation of a nucleotide in DNA is affected by rotation about seven different bonds. Six of the bonds rotate freely. The limited rotation about bond 4 gives rise to ring pucker also known as sugar pukering, in which one of the atoms in the five-membered furanose ring is out of the plane described by the other four.