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Structure of DNA (One monomer (Phosphate residue (Acidic - mass : charge…
Structure of DNA
One monomer
Phosphate residue
Acidic - mass : charge constant
Deoxyribose
5 carbon sugar
Nitrogenous base
Basic
Purines (a and g) single ring
Pyrimidines (t and c) double ring
Measurements
Diameter = 2nm
Distance between bases = 0.34nm
Nucleotides / turn = 10
Nucleoside
Deoxyribose and nitrogenous base
Nucleotide
Deoxyribose, nitrogenous base and phosphate residue
Carbon 1' not directly opposite each other on opposite nucleotides
Forms major and minor groove
Alpha helix enzymes complementary to major groove
Phosphodiester bonds between 3' and 5' carbon
Van der Waal forces between bases on the same strand
Formation of phosphodiester bond form pyrophosphate which is immediately broken down so the reaction is favourable