conservative ( same sugar puckers and glycosidic angles as in b-dna ) and non-conservative ( alternating sugar puckers as in intercalation sites ) conformations are found and they are proposed structures in pathways connecting b-dna , an intercalation site , and a kink site in the formation of a covalently intercalative bound adduct of bpde i ( + ) to n2 on guanine .
C0012854
dna
C0919262
b-dna