Created with Chemtool 1.6.9 from file /home/mad/chemtool/DNA_flip_Hbonds.svg
image/svg+xml
Phosphate-deoxyribosebackbone
Adenine
Cytosine
Guanine
Thymine
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
O
−
O
−
O
−
O
−
O
−
−
O
−
O
−
O
−
O
−
O
P
P
P
P
P
P
P
P
NH
2
OH
OH
NH
H
2
N
HN
NH
2
H
2
N
HN
H
2
N
NH
NH
2
3′ end
5′ end
3′ end
5′ end