核酸塩基対は水素結合により形成される。

核酸塩基対は水素結合により形成される。

- 野中 孝昌 の投稿
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アデニン — チミンの塩基対
塩基が極性の強い部分で向き合って、水素結合を形成している。
 
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グアニン — シトシン塩基対
アミノ基が水素原子供与体、カルボニル酸素が水素原子受容体、
ピリミジンの３位窒素が水素原子受容体となっている。