Biochem 2B03 Naming nitrogenous bases
Adenine---- Thymine : 2 hydrogen bonds
Distance: O--H 0.28nm and N--H 0.30nm
Cytosine ---- Guanine : 3 hydrogen bonds
Distance: O--H 0.29nm , N--H 0.30nm , O--H 0.29nm
*Hydrogen bonds pair either O--H or N—H
Pyrimidine: Cytosine, Uracil and Thymine
Cytosine: have N instead of N-H, one O instead of two O.
Uracil: missing CH3 methyl group. Have two O.
Thymine: contains the groups that the other two misses. Have two O and
methyl group and N-H
Purine: Adenine and Guanine [smaller ring is the same for A and G]
Adenine: missing O. contain two N and