1. <基因词汇Gene> 嘌呤：protease <基因词汇Gene> 蛋白? | purine <基因词汇Gene> 嘌呤 | pyrimidine <基因词汇Gene> 嘧啶
2. 檩条：56.pull 拉手 | 57.purine 檩条 | 58.putty 腻子
noun
1. a colorless crystalline organic base containing nitrogen
the parent compound of various biologically important substances
2. any of several bases that are derivatives of purine